Vacuum Relief / Anti-siphon Valves Industrial Valves

The VRV functions very much like a single stage pressure regulator, except this modified design allows the user to set the outlet pressure below atmospheric pressure. The VRV would be placed in between a vacuum line and a positive pressure source. When the vacuum source downstream draws pressure in... [See More]

• Valve Type: Anti-Siphon
• Maximum Pressure: 500.00

• Primary Material: Stainless Steel; 303 Stainless Steel

Series RVDT/RVDTM is a universal automatic backpressure control valve for pressure relief, pump backpressure, pump bypass, anti-siphon, and backpressure regulator applications. Thermoplastic or Metal Valves designed for smooth, sensitive operation and the ultimate in corrosion resistance or... [See More]

• Valve Type: Relief; Anti-Siphon
• Media: Water; Ultra-Pure Water, Conc. Etchants

• Primary Material: PVC; CPVC (optional feature); PTFE (optional feature); PP (optional feature); PVDF (optional feature)
• Valve Size: 0.25 to 2.00

APCO AVR Vacuum Relief/Air Inlet Valves are proven reliable at preventing vacuum formation in pipelines and resulting damage from column separation and water hammer (pressure surges). They are normally closed, large orifice one-way valves. They permit air to enter the pipeline or system to break a... [See More]

• Valve Type: Anti-Siphon

• Media: Air

The ES Series features large cross sectional O-rings, minimal leak points, and proven poppet designs. To reduce the possibility of contamination, all mounting hardware is outside of the flow path and no internal parts are threaded during assembly. A compact footprint combined with long life and... [See More]

• Valve Type: Directional; Anti-Siphon; 2-way bi-directional or 3-way normally-closed & universally ported
• Media: Gas; Air

• Primary Material: Stainless Steel; ENP Carbon Steel, Nickel Iron Alloy
• Maximum Pressure: 105.00

DISCONTINUED BY MANUFACTURER, BUTTERFLY VALVE, WITH CONTROL UNIT, AIR TO SPRING ACT, NORMALLY CLOSED, 24 VDC PROXIMITY SWITCHES, 24 VDC SOLENOID, STRAIN RELIEF CONNECTOR. FREE 2 YEAR RADWELL WARRANTY [See More]

• Valve Type: Control Valve; Butterfly; Solenoid; Relief; Anti-Siphon

Description. Pressure Relief Sustaining Valve Features. The pressure relief/sustaining valve consists of the main valve, pressure relief/sustaining pilot valve, needle valve, ball valve, microform filter, and pressure gauge. It can be used as both a pressure relief valve and a pressure sustaining... [See More]

• Valve Type: Control Valve; Directional; Float; Relief; Anti-Siphon

• Media: Air

The Breather Valve is design for enclosure, container transit cases and similar application where requires a manual vacuum pressure relief during pressure change cause by temperature change, height change. The container is hard to open under a vacuum differentials and residual pressure conditions. [See More]

• Valve Type: Anti-Siphon
• Actuation: Manual

• Media: Air
• Connection Description: Threaded

Series VB/VBM Patented diaphragm design assures dependable, repetitive, bubble-tight sealing to protect enclosed tanks from collapse or structural damage during draining. Also eliminates siphoning of dangerous fluids,and prevents vacuum damage to sensitive instruments and filters. 1/2 ″, 3/4... [See More]

• Valve Type: Anti-Siphon
• Media: Corrosive, Ultra-Pure Liquids

• Primary Material: PVC; CPVC (optional feature); PP (optional feature); PVDF (optional feature)
• Valve Size: 0.50 to 1.50

APCO SRA Surge Relief Angle Valves are designed to limit surge pressure and potential damage to the pump system. Pressure surges occur when fluid velocity changes. APCO Surge Relief Valves limit the surge pressure magnitude commonly associated with sudden pump shutdown in fluid piping systems. The... [See More]

• Valve Type: Anti-Siphon

RELIEF VALVE, ADJUSTABLE. FREE 2 YEAR RADWELL WARRANTY [See More]

• Valve Type: Relief; Anti-Siphon

MULTI FUNCTION VALVE, OPEN, 3 BAR, OPEN, 3 BAR, 10 BAR RELIEF. FREE 2 YEAR RADWELL WARRANTY [See More]

• Valve Type: Relief; Anti-Siphon

SAFETY RELIEF VALVE, SERIES 900, MALE X FEMALE NPT, 3/4INCH INLET SIZE, VITON SEAT/SEAL MATERIAL, THREAD CAP WITH GAG, 20.0 SET PRESSURE, 3/4PSI SIZE. FREE 2 YEAR RADWELL WARRANTY [See More]

• Valve Type: Relief; Safety; Anti-Siphon

• Connection Description: Threaded

RELIEF/BYPASS/BACKPRESSURE, D2 SERIES, SIZE 1/2 IN., SEAL EPDM, CONNECTION NPT THREADED, BODY MATERIAL POLYPRO. FREE 2 YEAR RADWELL WARRANTY [See More]

• Valve Type: Relief; Anti-Siphon

• Connection Description: Threaded

PRESSURE RELIEF VALVE, .50 NPT 10 - 150. FREE 2 YEAR RADWELL WARRANTY [See More]

• Valve Type: Relief; Anti-Siphon

CARTRIDGE INSERT RELIEF CHECK VALVE, KEPSEL, FLEXIBLE SEAL SEAT, MODEL 60, 1-1/2 INCH SIZE, 5 PSI CRACK PRESSURE, BUNA -N O-RING, STEEL. FREE 2 YEAR RADWELL WARRANTY [See More]

• Valve Type: Cartridge; Check; Relief; Anti-Siphon

• Primary Material: Steel

RELIEF VALVE, 2", 150 GPM, 65 PSI. FREE 2 YEAR RADWELL WARRANTY [See More]

• Valve Type: Relief; Anti-Siphon

RELIEF VALVE, SINGLE, ISO/DIS 4401-AB-03-D03, B CYLINDER PORT, T TANK FORT, 4-315 BAR, SCREW W/ LOCKNUT, DGMC-3-BT-GW-41. FREE 2 YEAR RADWELL WARRANTY [See More]

• Valve Type: Relief; Anti-Siphon

1 1/2" X 2" 40# HOT WATER RELIEF 4, 1 1/2"FEMALE NPT INLET X 2"FEMALE NPT OUTLET, HOT WATER HIGH-CAPACITY PRESSURE RELIEF VALVE. FREE 2 YEAR RADWELL WARRANTY [See More]

• Valve Type: Relief; Anti-Siphon

• Media: Water

SAFETY RELIEF VALVE, SERIES: 10-300 SERIES, 3/4 IN NOMINAL, MNPT X FNPT CONNECTION, 40 PSIG, HOT WATER, LIQUID AND WATER MEDIA, LIFT LEVER ACTUATOR, BRASS TRIM, EPDM/SILICONE SOFTGOODS, BRONZE BODY, PLAIN BRASS, 250 DEG F, 3.82 IN HEIGHT. FREE 2 YEAR RADWELL WARRANTY [See More]

• Valve Type: Relief; Safety; Anti-Siphon
• Media: Water

• Primary Material: Brass / Bronze

RELIEF VALVE, 3/4" MALE NPT INLET X 3/4" FEMALE NPT OUTLET, SET AT 25 PSI, 485,000 BTU CAPACITY, 250 DEGREES F MAXIMUM TEMPERATURE SERVICE, ASME SECTION IV BRASS HOT WATER PRESSURE RELIEF VALVE. FREE 2 YEAR RADWELL WARRANTY [See More]

• Valve Type: Relief; Anti-Siphon
• Media: Water

• Primary Material: Brass / Bronze

SAFETY RELIEF VALVE, 17 SERIES, 150 PSIG, 3/4 INCH PORT, MNPT X FNPT, BRONZE. FREE 2 YEAR RADWELL WARRANTY [See More]

• Valve Type: Relief; Safety; Anti-Siphon

DISCONTINUED BY MANUFACTURER, FLOW CONTROL & RELIEF VALVE, 0.75INCH NPTF PORT CONNECTION, STRAIGHT THREAD, 8GPM FLOW CONTROL RATE, 2250PSI RELIEF VALVE SETTING, DESIGN #10. FREE 2 YEAR RADWELL WARRANTY [See More]

• Valve Type: Control Valve; Relief; Anti-Siphon

• Connection Description: Threaded

SAFETY RELIEF VALVE, LEVER HDL, BRZ BODY, SS TRIM, 500PSI. FREE 2 YEAR RADWELL WARRANTY [See More]

• Valve Type: Relief; Safety; Anti-Siphon

DISCONTINUED BY MANUFACTURER, VALVE, SEQUENCE AND CHECK VALVE, DESIGN CODE 20, PLATE INSTALLATION, NOMINAL SIZE 10, 2.5-4.5 BAR, ONLY LOW BOTTOM PRESSURE RELIEF VALVE. FREE 2 YEAR RADWELL WARRANTY [See More]

• Valve Type: Check; Relief; Anti-Siphon

DISCONTINUED BY MANUFACTURER, PRESSURE RELIEF COUPLING ELEMENT, ONLY DEPRESSURISED COUPLING, 350BAR PRESSURE MAX, BUILT-IN COUPLING NIPPLE. FREE 2 YEAR RADWELL WARRANTY [See More]

• Valve Type: Relief; Anti-Siphon

DISCONTINUED BY MANUFACTURER, PRESSURE RELIEF VALVE, 1600 PSI, 3.5 INCH, BYPASS VALVE HOT MELT HOT MELT ADHESIVE. FREE 2 YEAR RADWELL WARRANTY [See More]

• Valve Type: Relief; Anti-Siphon

DISCONTINUED BY MANUFACTURER, RELIEF VALVE, 3/4NPT, 150PSI, REPLACED BY 10-604-34. FREE 2 YEAR RADWELL WARRANTY [See More]

• Valve Type: Relief; Anti-Siphon

VALVE INLINE RELIEF 700-4300PSI. FREE 2 YEAR RADWELL WARRANTY [See More]

• Valve Type: Relief; Anti-Siphon

AVK combination air valves combine an air & vacuum orifice and an automatic air release orifice in a single body. The innovative design with a large air gap between liquid and sealing system ensures a reliable function even whenused with aggressive liquids and liquids with solid particles. The... [See More]

• Valve Type: Anti-Siphon
• Media: Wastewater; Air

• Primary Material: Ductile Iron; Stainless Steel (optional feature)
• Valve Size: 3.00 to 8.00

The Bushing Valve is a check valve with a standard bushing housing. The valve is adaptable to many types of service applications. It has very little restriction and produces a low pressure drop. It can be used quite effectively in systems where flow and pressure drop are critical by the use of a... [See More]

• Valve Type: Directional; Metal Seated (optional feature); Lift Check; Back Flow; Check; Poppet; Relief; Anti-Siphon; Bushing Valve
• Media: Water; Hot Water; Cold Water  ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Hydraulic; Steam; Liquids; Air; Chemical

• Primary Material: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium
• Valve Size: 0.50

The V-5700 and V-5800 Series Vacuum Piloted 3-Way Valve has an adjustable vacuum pilot setpoint; the sensing vacuum range is 1 to 28" Hg. Maximum signal pressure is 29.9" Hg. [See More]

• Valve Type: Anti-Siphon
• Media: Air; Compressed Air

• Primary Material: Polysulfone
• Valve Size: 0.06 to 0.12

The Zurn Wilkins P1550XL Pressure Relief Valve is installed on cold water service lines to protect against excessive pressure buildup. These devices are for pressure only and should be used in conjunction with other temperature limiting devices. To view all options, see the Specification Sheet. [See More]

• Valve Type: Relief; Anti-Siphon

• Media: Water

Vacuum pressure relief module for vacuum pump protection. The vacuum pressure relief module is used to protect the vacuum pump from excess pressure. Even in cases of rapid pressure rises (up to 4,350 psi) the vacuum pressure relief module protects the vacuum pump and its peripherals effectively. If... [See More]

• Valve Type: Relief; Anti-Siphon
• Media: Gas; High Purity; Air

• Primary Material: Aluminum; Brass / Bronze; Stainless Steel
• Valve Size: 0.47

The FVV fi ll vent valves or weigh valves can be used in bulk handling systems where product is pneumatically conveyed to a silo or hopper that is process weighed. The FVV is ideally suitable for food and chemical industries. The valve can be used to discarge the product into a silo, while the air... [See More]

• Valve Type: Diverter; Anti-Siphon
• Valve Size: 1.97 to 5.91

• Media: Powder Solids
• Maximum Pressure: -4.35 to 14.50

This 1/2 inch lead free atmospheric vacuum breaker is utilized to prevent the backflow of water into the potable water system in order to prevent contamination of the water supply. It consists of lead free brass construction. [See More]

• Valve Type: Anti-Siphon

Protects fluoropolymer heat exchangers from collapse damage due to vacuum conditions that often occur in steam lines. FEATURES. Brass body with stainless steel operating mechanism and EPR O-ring seat. SPECIFICATIONS. ½-inch FNPT only. Maximum steam service: 50 PSIG. Maximum temperature... [See More]

• Valve Type: Anti-Siphon
• Media: Steam

• Primary Material: Brass / Bronze; Stainless Steel
• Valve Size: 0.50

Temperature and pressure relief valves. The temperature and pressure relief valve (T & P) is the primary "back-up" safety protection and a two-in-one safety device, which, as its name implies, responds both to excessive temperature and to excessive pressure in a water heater, which prevents the... [See More]

• Valve Type: Anti-Siphon
• Maximum Pressure: 145.04

• Media: Water
• Media Temperature: 199 to 201

Series ASCV Anti-Siphon/Chemigation Check Valves are used to prevent backflow of mixtures of water and chemicals into the water supply. The spring swing silent check valve is extremely efficient. Series ASCV also features a built in vacuum breaker to provide air release and vacuum relief when flow... [See More]

• Valve Type: Check; Anti-Siphon
• Media: Water; Hot Water; Cold Water  ; Potable Water

• Primary Material: Steel
• Valve Size: 3.00 to 12.00

Alfa Laval relief valves prevent vacuum or pressure build up inside tanks or vessels used in the brewery, food and beverage, personal care and biopharm industries. Overpressure protection. To protect against overpressure and vacuum conditions while filling or emptying the tank of liquid, Alfa Laval... [See More]

• Valve Type: Sanitary; Anti-Siphon
• Number of Ports: 2

• Media: Air

ATMOSPHERIC VACUUM BREAKER - Designed to prevent back-siphonage. Not for potable water. Complies with ASSE 1001. For reference use only. Please check Flomatic's website for the latest valve product specifications. [See More]

• Valve Type: Back Flow; Anti-Siphon
• Maximum Pressure: 125.00

• Valve Size: 0.50 to 1.00
• Media Temperature: 180

EZ-SRV valves protect refrigeration pressure vessels and other refrigeration system components from excessive pressure. If an abnormally high pressure occurs, the cartridge pressure-relief valve will open to relieve the excess pressure, preventing potential damage to equipment and injury to... [See More]

• Valve Type: Anti-Siphon

Relief valve [See More]

• Valve Type: Anti-Siphon

AVK air and vacuum valves are designed to discharge air during the filling or charging of the system and to admit air into the system during system drainage, valve or pump shut-off or at water column separation. We also offer a range of air release valves and combination air valves combining the... [See More]

• Valve Type: Anti-Siphon
• Media: Air

• Primary Material: Ductile Iron
• Valve Size: 4.00 to 12.00

The Butt Weld (B4) check valve is a one piece body machined from bar stock, eliminating porosity concerns and providing uniform density for more consistent welds. Made to ASME/ANSI B16.25 for schedule 40 pipe, it carries rugged, dependable Check-All trim with a wide variety of seat materials and... [See More]

• Valve Type: Directional; Metal Seated (optional feature); Lift Check; Back Flow; Check; Poppet; Relief; Anti-Siphon
• Media: Water; Hot Water; Cold Water  ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Hydraulic; Steam; Liquids; Air; Chemical

• Primary Material: Stainless Steel; Steel; Exotic Metal; Alloy 20,Alloy C-276, Monel, Alloy B
• Valve Size: 0.50

The Zurn Wilkins P1520XL Pressure Relief Valve installs on cold water service lines to protect against excessive pressure buildup. These devices are for pressure only and should be used in conjunction with other temperature limiting devices. To view all options, see the Specification Sheet. Features... [See More]

• Valve Type: Relief; Anti-Siphon

• Media: Water

Vacuum pressure relief module for venting to the outside for vacuum pump protection. The TVS21 vacuum pressure relief module is used to protect the vacuum pump from excess pressure. The vacuum pressure relief module type TVS21 protects the pump from damages by venting the excess pressure safely into... [See More]

• Valve Type: Relief; Anti-Siphon
• Media: Gas; High Purity; Air

• Primary Material: Aluminum; Brass / Bronze; Stainless Steel
• Valve Size: 0.47

The original dual diaphragm design, with lifetime warranty. [See More]

• Valve Type: Pilot; Anti-Siphon

• Media: Potable Water; Gas; 1; Compressed Air

The Alfa Laval SB Anti Vacuum House minimizes the risk of implosion in closed process tanks that are subject to vacuum conditions, such as while filling or emptying the tank, cool rinsing after hot-cleaning, or caustic cleaning in a CO2 atmosphere. Capable of being integrated into a SCANDI BREW... [See More]

• Valve Type: Safety; Anti-Siphon
• Media: Air

• Primary Material: Stainless Steel
• Valve Size: 2.00 to 6.00

77- Auto-Vac ® Vacuum Breaker - This 1" valve is available in stainless steel and PVC. All internal parts are engineered composite, with a stainless steel disc and resilient seat. Used to prevent water hammer in wastewater valves. For reference use only. Please check Flomatic's website for the... [See More]

• Valve Type: Ball Check; Ball; Check; Anti-Siphon
• Media: Wastewater

• Primary Material: Stainless Steel; PVC
• Valve Size: 1.00

Designed to provide emergency relief from excessive pressure in refrigerant-containing vessels, they are built in strict conformance with ASME Boiler and Pressure Vessel Code requirements for safety relief devices. Each valve bears the ASME code symbol of certification (UV). Their capacities are... [See More]

• Valve Type: Anti-Siphon

Valves with connections of 1/4" or 1/2" have a diaphragm made of Viton <reg > and withstand a maximum inlet pressure of 210 psig. All other valves have a PTFE shaft design and withstand a maximum inlet pressure of 140 psig. The shaft design prevents emergency shutdown with a three-seal system... [See More]

• Valve Type: Relief; Anti-Siphon

• Primary Material: PTFE

The Connector Valve is a check valve with a hex nipple or connector housing. It is designed to be used in installations where check valves with male pipe threads are required. The Connector Valve is adaptable for use as a check valve, vacuum breaker, or low pressure relief valve. Two valves used in... [See More]

• Valve Type: Directional; Metal Seated (optional feature); Lift Check; Back Flow; Check; Poppet; Relief; Anti-Siphon
• Media: Water; Hot Water; Cold Water  ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids; Air; Chemical

• Primary Material: Aluminum (optional feature); Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium
• Valve Size: 0.50

The Zurn Wilkins P4000A Pressure Relief Valve prevents pressure buildup in a fire protection system or other closed type system whenever the line pressure exceeds the setting of the spring caused by pumps, elevated piping and thermal expansion. To view all options, see the Specification Sheet. [See More]

• Valve Type: Relief; Anti-Siphon

• Media: Water

This 3/8 inch lead free atmospheric vacuum breaker is utilized to prevent the backflow of water into the potable water system in order to prevent contamination of the water supply. It consists of lead free brass construction. [See More]

• Valve Type: Anti-Siphon

Integrated in a SCANDI BREW ® tank top system, the Alfa Laval SB Anti Vacuum Valve is a compact safety valve that minimizes the risk of implosion of tanks when a vacuum condition arises. These conditions occur while filling or emptying the vessel of liquid, cool rinsing after hot-cleaning or... [See More]

• Valve Type: Safety; Anti-Siphon
• Media: Air

• Primary Material: Stainless Steel
• Valve Size: 3.94 to 15.75

HOSE CONNECTION VACUUM BREAKERS - Designed to prevent back-siphonage or backflow of water, with vandal resistant features. Complies with ASSE 1011. For reference use only. Please check Flomatic's website for the latest valve product specifications. [See More]

• Valve Type: Back Flow; Anti-Siphon
• Maximum Pressure: 125.00

• Valve Size: 0.75
• Media Temperature: 180

Hansen rupture disc assemblies (RDAs) are used to indicate which pressure-relief valve has discharged. A pressure-relief valve will re-seat after discharging. However, a rupture disc remains open after bursting. (A rupture disc is not a stand alone safety device.) An installed pressure gauge or... [See More]

• Valve Type: Anti-Siphon

Flange Insert valves are the ultimate check valves in flanged systems. They provide the simplest most economical way to install check valves in a piping system, the valve body automatically positions the valve and holds it in place while bolts are being installed and tightened. All that is required... [See More]

• Valve Type: Directional; Metal Seated (optional feature); Lift Check; Back Flow; Check; Poppet; Relief; Anti-Siphon
• Media: Water; Hot Water; Cold Water  ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Hydraulic; Steam; Liquids; Air; Chemical

• Primary Material: Aluminum (optional feature); Brass / Bronze; Stainless Steel; Steel; Exotic Metal; PVC; PTFE; FEP Encapsulator
• Valve Size: 0.50

The Zurn Wilkins P1000A Pressure Relief Valve prevents over-pressure of storage tanks, and is available in a variety of pressure relief settings for installation versatility. To view all options, see the Specification Sheet. Features And Benefits. Pressure Relief Valve set at 125 psi. Prevents... [See More]

• Valve Type: Relief; Anti-Siphon

• Media: Water

Series 800M4QT Anti-Siphon Pressure Vacuum Breakers prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It consists of bronze body construction, silicone rubber check valve disc, plastic check valve seat, stainless steel springs, a bonnet with... [See More]

• Valve Type: Anti-Siphon

• Valve Size: 0.50 to 2.00

The Alfa Laval SB Self-Cleaning CO2 Valve is a self-regulating valve that controls the flow of carbon dioxide through tank top systems and other. Designed for use in the brewery, food, dairy and beverage industries, this combined gas escape/supply valve makes it easy to vent or pressurize the... [See More]

• Valve Type: Safety; Anti-Siphon; Clean In Place Valve
• Valve Size: 1.00 to 4.00

• Primary Material: Stainless Steel
• Connection Description: Threaded; Compression

The Check-All Flanged & Drilled check valve is a one-piece cast body valve with ANSI/ASME B16.5 Class 150 flanged ends. The HVFD series valve is used when higher flow rates and lower pressure drops are required. The valve is available in sizes 1 through 10 inches and standard materials of 316... [See More]

• Valve Type: Directional; Metal Seated (optional feature); Lift Check; Back Flow; Check; Poppet; Relief; Anti-Siphon
• Media: Water; Hot Water; Cold Water  ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Hydraulic; Steam; Liquids; Air; Chemical

• Primary Material: Brass / Bronze; Stainless Steel; Steel
• Valve Size: 1.00

The TP220 Zurn Wilkins Commercial Temperature and Pressure Relief Valve installs on commercial water heaters to protect against over-temperature or excessive pressure. To view all options, see the Specification Sheet. Features And Benefits. Temperature and pressure relief valve - 5" probe, set at... [See More]

• Valve Type: Relief; Anti-Siphon

• Media: Water

Series 188A Anti-Siphon Vacuum Breakers for Irrigation Systems prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It consists of brass body construction with bronze internal trim, chemical resistant silicone seat disc and an atmospheric vent... [See More]

• Valve Type: Anti-Siphon

• Valve Size: 0.75 to 2.00

The Check-All Flanged & Drilled - PTFE Lined check valve is a one-piece body valve with ANSI/ASME flanged ends. The valve has a solid one-piece PTFE liner, which covers the flange faces out to the raised face diameter. All wetted surfaces are fluoropolymer (PTFE/FEP/PFA) including the FEP... [See More]

• Valve Type: Directional; Metal Seated (optional feature); Lift Check; Back Flow; Check; Poppet; Relief; Anti-Siphon
• Media: Water; Hot Water; Cold Water  ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Hydraulic; Steam; Liquids; Air; Chemical

• Primary Material: Steel; FEP Encapsulator
• Valve Size: 1.00

The TP3000 Zurn Wilkins Commercial Temperature and Pressure Relief Valve is designed for installation on commercial water heaters to protect against over-temperature or excessive pressure. To view all options, see the Specification Sheet. Features And Benefits. Temperature and pressure relief Valve... [See More]

• Valve Type: Relief; Anti-Siphon

• Media: Water

Series 9BD Dual Check Vacuum Breakers for Vending Machine Water Supply Lines prevent the reverse flow of contaminates, such as carbon dioxide gas and carbonated water, from entering the potable water supply. It consists of a stainless steel body construction, rubber parts, dual check valves, ball... [See More]

• Valve Type: Check; Anti-Siphon
• Valve Size: 0.25 to 0.38

• Media: Water

The Lined Pipe Insert valve is designed to mate between two flanges on most lined pipe systems. It provides the simplest most economical way to install a check valve in a lined piping system. No gaskets are required, just spread the flanges, center the valve and bolt the flanges together. Lined Pipe... [See More]

• Valve Type: Directional; Metal Seated (optional feature); Lift Check; Back Flow; Check; Poppet; Relief; Anti-Siphon
• Media: Water; Hot Water; Cold Water  ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Hydraulic; Steam; Liquids; Air; Chemical

• Primary Material: Exotic Metal; PTFE; FEP Encapsulator
• Valve Size: 1.00

Series LFN9-CD is designed to prevent high hazard backsiphonage backflow and low-head backpressure (10ft. or less) from contaminating the potable water supply. The LFN9-CD is ideally suited to prevent backflow associated with hose connections and may be screwed directly to the sill cock, yard... [See More]

• Valve Type: Anti-Siphon

• Media: Potable Water; Air

The Check-All Mini-Check is a three piece constructed check valve. The valve is designed for minimum pressure drops. The three piece construction permits many combinations of end fittings, which makes the valve adaptable for nearly every application. The Mini-Check is available with 1/8, 1/4, and... [See More]

• Valve Type: Directional; Metal Seated (optional feature); Lift Check; Back Flow; Check; Poppet; Relief; Anti-Siphon
• Media: Water; Hot Water; Cold Water  ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Hydraulic; Steam; Liquids; Air; Chemical

• Primary Material: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Titanium
• Valve Size: 0.12

Series 800M4FR Freeze Resistant Pressure Vacuum Breakers prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It consists of bronze body construction, silicone rubber check valve disc, plastic check valve seat, stainless steel springs, a bonnet... [See More]

• Valve Type: Anti-Siphon

• Valve Size: 0.50 to 2.00

The Sanitary Cartridge Valve is a 316 stainless steel check valve for use in new or existing sanitary systems. The SCV design seals on the ID of sanitary ferrules with replaceable food grade seals (Standard is FDA EPDM). The valves fit the Alfa Laval Inc. Bevel Seat and Tri-Clamp ® fittings, the... [See More]

• Valve Type: Directional; Metal Seated (optional feature); Lift Check; Back Flow; Cartridge; Check; Poppet; Relief; Sanitary; Anti-Siphon
• Media: Water; Hot Water; Cold Water  ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids; Air; Chemical

• Primary Material: Stainless Steel
• Valve Size: 0.75

Series 912HP High Pressure Hose Drop Dual Check Vacuum Breakers prevent the reverse flow of polluted water from processing and rendering areas from entering into the potable water supply. It consists of a brass body construction, stainless steel internal parts, dual check valves, bronze ball valve... [See More]

• Valve Type: Check; Anti-Siphon

• Valve Size: 0.75 to 1.00

For over 35 years, the compact, fluoropolymer (PTFE/FEP/PFA), Sanitary Insert Valve has been used as the most economical solution to providing a check valve in a new or existing sanitary piping system. This valve style is designed to fit into grooved-end clamp-type fittings. Since the Sanitary... [See More]

• Valve Type: Directional; Lift Check; Back Flow; Check; Poppet; Relief; Sanitary; Anti-Siphon
• Media: Water; Hot Water; Cold Water  ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids; Air; Chemical

• Primary Material: PTFE; FEP Encapsulator
• Valve Size: 0.75

Series S8 Hose Connection Vacuum Breakers are designed specifically for tub and shower hand spray sets to prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It consists of brass body construction (S8) or chrome finish (S8C), stainless steel... [See More]

• Valve Type: Anti-Siphon
• Valve Size: 0.50

• Primary Material: Brass / Bronze

The 3-A Sanitary Check Valve is an all 316/316L stainless steel check valve with a standard 32 Ra or better finish, (finer available) for use in new or existing sanitary systems. The 3SC design seals on the ID of sanitary ferrules with 3-A specified materials (standard is EPDM). The valve seals... [See More]

• Valve Type: Directional; Lift Check; Back Flow; Check; Poppet; Relief; Sanitary; Anti-Siphon
• Media: Water; Hot Water; Cold Water  ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Steam; Liquids; Air

• Primary Material: Stainless Steel
• Valve Size: 1.00

Series NF8 Hose Connection Vacuum Breakers are designed specifically for wall and yard hydrants to prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It consists of brass body construction (NF8) or chrome finish (NF8C), stainless steel... [See More]

• Valve Type: Anti-Siphon
• Valve Size: 0.75

• Primary Material: Brass / Bronze

The Straight Sided Insert is a thread less check valve. designed to be inserted into any cavity where a check valve is needed and threads are not desired. Available Materials: 316 Stainless Steel (SS). Carbon Steel (CS). Alloy 20 (A2). Alloy C-276 (HC). Brass (BR). Alloy B (HB). MONEL ® (MO) [See More]

• Valve Type: Directional; Metal Seated (optional feature); Lift Check; Back Flow; Check; Poppet; Relief; Anti-Siphon
• Media: Water; Hot Water; Cold Water  ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Hydraulic; Steam; Liquids; Air; Chemical

• Primary Material: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276,, Titanium
• Valve Size: 0.50

Series 8FR Hose Connection Vacuum Breakers permit the attachment of portable hoses to hose thread faucets and prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It consists of a brass body construction, stainless steel working parts, a rubber... [See More]

• Valve Type: Relief; Anti-Siphon
• Valve Size: 0.75

• Primary Material: Brass / Bronze

The Tubing Check Valve-Flared is a three piece constructed valve with 37 º flared ends which conform to J. I. C. and S. A. E. Hydraulic Standards. These valves are designed for maximum flow with minimal pressure drop. Available Materials: 316 Stainless Steel (SS). Brass (BR). Carbon Steel (CS) [See More]

• Valve Type: Directional; Metal Seated (optional feature); Lift Check; Back Flow; Check; Poppet; Relief; Anti-Siphon
• Media: Water; Hot Water; Cold Water  ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Hydraulic; Steam; Liquids; Air; Chemical

• Primary Material: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Titanium
• Valve Size: 0.25

Series 8C Hose Connection Vacuum Breakers permit the attachment of portable hoses to hose thread faucets and prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It consists of a brass body construction with chrome finish, stainless steel... [See More]

• Valve Type: Anti-Siphon
• Valve Size: 0.75

• Primary Material: Brass / Bronze

The Tubing Check Valve is a three piece constructed check valve with flareless tube ends. The valve is designed for minimum pressure drops. The valves are furnished complete with ferrules and nuts. Available Materials: 316 Stainless Steel (SS). Brass (BR). Carbon Steel (CS) [See More]

• Valve Type: Directional; Metal Seated (optional feature); Lift Check; Back Flow; Check; Poppet; Relief; Anti-Siphon
• Media: Water; Hot Water; Cold Water  ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Hydraulic; Steam; Liquids; Air; Chemical

• Primary Material: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Titanium
• Valve Size: 0.12

Series LF008PCQT Lead Free* Anti-Siphon, Spill-Resistant, Vacuum Breakers prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage on indoor point-of-use applications. It consists of a Lead Free* cast copper silicon alloy body construction,... [See More]

• Valve Type: Anti-Siphon

• Valve Size: 0.38 to 1.00

The Union Insert Valve is the threaded pipe counterpart of the Flange Insert Valve. Designed to be inserted into most standard ground joint unions, it provides the simplest and most economical way to install a check valve in a threaded pipe system. A check valve may be installed anywhere in the... [See More]

• Valve Type: Directional; Metal Seated (optional feature); Lift Check; Back Flow; Check; Poppet; Relief; Anti-Siphon
• Media: Water; Hot Water; Cold Water  ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Hydraulic; Steam; Liquids; Air; Chemical

• Primary Material: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium
• Valve Size: 0.50

Series LF7R Lead Free* Dual Check Valves prevent the reverse flow of polluted water from entering into the drinking water supply at the service entrance or at individual outlets. It consists of a Lead Free* cast copper silicon alloy body construction, with two compact replaceable plastic check... [See More]

• Valve Type: Wafer; Anti-Siphon
• Valve Size: 1.00 to ?

• Media: Potable Water

The Universal High Pressure check valve is a one piece body machined from bar stock with female pipe threads. The valve is designed and manufactured for high pressure applications. For applications below 3000 PSIG, view our UN-3 series. Available Materials: 316 Stainless Steel (SS). Alloy B (HB). [See More]

• Valve Type: Directional; Metal Seated; Lift Check; Back Flow; Check; Poppet; Relief; Anti-Siphon
• Media: Water; Hot Water; Cold Water  ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Hydraulic; Steam; Liquids; Air; Chemical

• Primary Material: Aluminum (optional feature); Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium
• Valve Size: 0.38

Series LF7 Lead Free* Dual Check Valves prevent the reverse flow of polluted water from entering into the drinking water supply at the service entrance or at individual outlets. It consists of a Lead Free* cast copper silicon alloy body construction, with two plastic replaceable check valves, and... [See More]

• Valve Type: Wafer; Anti-Siphon

• Media: Potable Water

The Universal Low Pressure check valve is a one piece body machined from bar stock and is designed for minimum pressure drop. The valve is light, compact, and provides maintenance free dependable service. For applications above 3000 PSIG, view our UN-10 series. For applications where weld joint are... [See More]

• Valve Type: Directional; Metal Seated (optional feature); Lift Check; Back Flow; Check; Poppet; Relief; Anti-Siphon
• Media: Water; Hot Water; Cold Water  ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Hydraulic; Steam; Liquids; Air; Chemical

• Primary Material: Aluminum (optional feature); Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium
• Valve Size: 0.38

Series LFN9, LFN9C Lead Free* Dual Check Vacuum Breakers prevent the reverse flow of polluted water from entering into the potable water supply. It consists of a Lead Free* brass body construction with an atmospheric vent, and NPT female inlet and outlet connections. Series LFN9 and LFN9C are... [See More]

• Valve Type: Wafer; Anti-Siphon

• Media: Potable Water

The Universal Socket Weld check valve is machined from bar stock and designed for a minimum pressure drop. It carries rugged, dependable Check-All trim and there is a wide variety of seat materials and cracking pressures to choose from. This valve series is particularly attractive when weld joints... [See More]

• Valve Type: Directional; Metal Seated (optional feature); Lift Check; Back Flow; Check; Poppet; Relief; Anti-Siphon
• Media: Water; Hot Water; Cold Water  ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Hydraulic; Steam; Liquids; Air; Chemical

• Primary Material: Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium
• Valve Size: 0.38

Series LFNLF-9 Lead Free* Dual Check Vacuum Breakers for Laboratory Faucets prevent the reverse flow of polluted water from entering into the potable water supply. It consists of a brass body construction with chrome plating, dual check valves, stainless steel working parts, and durable rubber... [See More]

• Valve Type: Wafer; Anti-Siphon

• Media: Potable Water

The Wafer Insert (WV) valve is designed to fit between two mating ANSI flanges. Two gaskets are required, instead of the one normally used. The "drop in" valve body fits inside the bolt circle for quick installation and removal in rigid piping applications where the use of the F1, F6, or FP are not... [See More]

• Valve Type: Directional; Metal Seated (optional feature); Lift Check; Wafer; Back Flow; Check; Poppet; Relief; Anti-Siphon
• Media: Water; Hot Water; Cold Water  ; Ground Water; Potable Water; Salt Water (optional feature); Gas; Gasoline / Diesel Fuel (optional feature); High Purity (optional feature); LP Gas (optional feature); Natural Gas (optional feature); Sour Gas (optional feature); Specialty Corrosive (optional feature); Hydraulic; Steam; Liquids; Air; Chemical

• Primary Material: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium
• Valve Size: 0.50

Series LF800M4FR Lead Free* Freeze Resistant Pressure Vacuum Breakers prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It consists of Lead Free* Cast Copper Silicon Alloy body construction, silicone rubber check valve disc, plastic check... [See More]

• Valve Type: Wafer; Anti-Siphon
• Maximum Pressure: ? to 1.00

• Media: Potable Water

The LF8 Series Hose Connection Vacuum Breakers permit the attachment of portable hoses to hose thread faucets and prevent the reverse flow of polluted water into the potable water supply due to backsiphonage. It consists of a copper silicon alloy body construction, stainless steel working parts, and... [See More]

• Valve Type: Wafer; Anti-Siphon

• Media: Potable Water; Air