Vacuum Relief / Anti-siphon Valves Water Valves
from Plast-O-Matic Valves, Inc.
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; Regulator
- Valve Size: 0.25 to 2.00
- Media: Water; Ultra-Pure Water, Conc. Etchants
- Maximum Pressure: 5.00 to 150.00
from DFT Inc.
DFT ® Vacuum Breakers provide effective protection against collapse of pressure vessels, tanks and rolls. They prevent condensate "back-up" when equipment is shut down or inlet steam is reduced by modulating control valves. In piping systems, DFT ® Vacuum Breakers are used to break siphons,... [See More]
- Valve Type: Ball Check; Check; Hydraulic; Anti-Siphon
- Valve Size: 1.00 to 4.00
- Media: Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water; Wastewater
- Maximum Pressure: 2500.00
from Radwell International
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
from Radwell International
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
- Primary Material: Brass / Bronze
- Media: Water
from Radwell International
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
- Primary Material: Brass / Bronze
- Media: Water
from Radwell International
RELIEF VALVE, 100 IN WATER. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Relief; Anti-Siphon
- Media: Water
from Radwell International
WATER PRESSURE RELIEF VALVE,1 IN IRON BOILER PRESSURE RELIEF VALVE, 50 PSI, EXPANDED OUTLETS. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Relief; Anti-Siphon
- Media: Water
from Radwell International
TEMPERATURE AND PRESSURE RELIEF VALVE, FOR WATER HEATERS, NCLX-5, BRONZE, 3/4 INCH, 125PSI, 210 °F, 105000 BTU/HR, ASME, 500000 BTU/HR, MAX HEATER INPUT, LONG PROBE, UPC #697285159143 . FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Relief; Anti-Siphon
- Media: Water
from Radwell International
TEMPERATURE AND PRESSURE RELIEF VALVE, FOR WATER HEATERS, NCLX-5L, 3/4 INCH, CAST BRONZE BODY, 150 PSI, TEMPERATURE RELIEF: 210F (98.9C) STANDARD, 500000 BTU/HR MAX HEATER INPUT, 105000 BTU/HR, ASME, UPC: 697285188211 . FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Relief; Anti-Siphon
- Media: Water
from Radwell International
DISCONTINUED BY MANUFACTURER, PRESSURE RELIEF VALVE FOR HOT WATER, 1/2 INCH NPT, BRONZE, 15 PSIG, CAP 125 LB/HR H81C. FREE 2 YEAR RADWELL WARRANTY [See More]
- Valve Type: Relief; Anti-Siphon
- Media: Water
from Ideal Valve Inc.
For extremely precise control of larger flows, very precise repeatability [See More]
- Valve Type: Needle; Control Valve; Hydraulic; Metering; Mixing; Sampling; Shut Off; Anti-Siphon
- Valve Size: 0.12
- Media: Water
- Maximum Pressure: 3000.00
from Check-All Valve Mfg. Co.
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: Check; Lift Check; Back Flow; Poppet; Directional; Hydraulic; Relief; Anti-Siphon; Bushing Valve
- Valve Size: 0.50
- Media: Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Liquids
- Maximum Pressure: 3000.00
from Watts
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
from Zurn Industries LLC
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
from Shanghai Yuanben Magnetoelectric Tech. Co., Ltd.
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
from Ames Fire & Waterworks
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
- Valve Size: 3.00 to 12.00
- Media: Water; Hot Water; Cold Water ; Potable Water
- Maximum Pressure: 150.00
from Check-All Valve Mfg. Co.
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: Check; Lift Check; Back Flow; Poppet; Directional; Hydraulic; Relief; Anti-Siphon
- Valve Size: 0.50
- Media: Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Liquids
- Maximum Pressure: 1500.00 to 5000.00
from Watts
Series LF288A Lead Free* Hot or Cold Water Anti-Siphon Vacuum Breakers prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It consists of Lead Free* brass body construction (LF288A) or chrome finish (LF288AC), chemical resistant silicone seat... [See More]
- Valve Type: Anti-Siphon
- Valve Size: 0.25 to 3.00
- Media: Water; Hot Water; Cold Water
from Zurn Industries LLC
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
from Check-All Valve Mfg. Co.
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: Check; Lift Check; Back Flow; Poppet; Directional; Relief; Anti-Siphon
- Valve Size: 0.50
- Media: Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Liquids
- Maximum Pressure: 3000.00
from Watts
Series LFN36 Lead Free* Water Service Vacuum Relief Valves are used in water heater/tank applications to automatically allow air to enter into the piping system to prevent vacuum conditions that could siphon the water from the system and damage water heater/tank equipment. It consists of a Lead... [See More]
- Valve Type: Relief; Anti-Siphon
- Valve Size: 0.50 to 0.75
- Media: Water
from Zurn Industries LLC
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
from Check-All Valve Mfg. Co.
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: Check; Lift Check; Back Flow; Poppet; Directional; Hydraulic; Relief; Anti-Siphon
- Valve Size: 0.50
- Media: Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Liquids
- Primary Material: Aluminum (optional feature); Brass / Bronze; Stainless Steel; Steel; Exotic Metal; PVC; PTFE; FEP Encapsulator
from Zurn Industries LLC
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
from Check-All Valve Mfg. Co.
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: Check; Lift Check; Back Flow; Poppet; Directional; Hydraulic; Relief; Anti-Siphon
- Valve Size: 1.00
- Media: Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Liquids
- Primary Material: Brass / Bronze; Stainless Steel; Steel
from Zurn Industries LLC
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
from Check-All Valve Mfg. Co.
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: Check; Lift Check; Back Flow; Poppet; Directional; Hydraulic; Relief; Anti-Siphon
- Valve Size: 1.00
- Media: Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Liquids
- Maximum Pressure: 55.00
from Zurn Industries LLC
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
from Check-All Valve Mfg. Co.
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: Check; Lift Check; Back Flow; Poppet; Directional; Hydraulic; Relief; Anti-Siphon
- Valve Size: 1.00
- Media: Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Liquids
- Maximum Pressure: 55.00
from Check-All Valve Mfg. Co.
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: Check; Lift Check; Back Flow; Poppet; Directional; Hydraulic; Relief; Anti-Siphon
- Valve Size: 0.12
- Media: Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Liquids
- Maximum Pressure: 5000.00
from Check-All Valve Mfg. Co.
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: Check; Lift Check; Back Flow; Cartridge; Poppet; Directional; Relief; Sanitary; Anti-Siphon
- Valve Size: 0.75
- Media: Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Liquids
- Maximum Pressure: 1000.00
from Check-All Valve Mfg. Co.
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: Check; Lift Check; Back Flow; Poppet; Directional; Relief; Sanitary; Anti-Siphon
- Valve Size: 0.75
- Media: Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Liquids
- Maximum Pressure: 55.00
from Check-All Valve Mfg. Co.
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: Check; Lift Check; Back Flow; Poppet; Directional; Relief; Sanitary; Anti-Siphon
- Valve Size: 1.00
- Media: Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Liquids
- Maximum Pressure: 1000.00
from Check-All Valve Mfg. Co.
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: Check; Lift Check; Back Flow; Poppet; Directional; Hydraulic; Relief; Anti-Siphon
- Valve Size: 0.50
- Media: Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Liquids
- Maximum Pressure: 3000.00
from Check-All Valve Mfg. Co.
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: Check; Lift Check; Back Flow; Poppet; Directional; Hydraulic; Relief; Anti-Siphon
- Valve Size: 0.25
- Media: Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Liquids
- Maximum Pressure: 3000.00 to 8500.00
from Check-All Valve Mfg. Co.
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: Check; Lift Check; Back Flow; Poppet; Directional; Hydraulic; Relief; Anti-Siphon
- Valve Size: 0.12
- Media: Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Liquids
- Maximum Pressure: 3000.00 to 8000.00
from Check-All Valve Mfg. Co.
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: Check; Lift Check; Back Flow; Poppet; Directional; Hydraulic; Relief; Anti-Siphon
- Valve Size: 0.50
- Media: Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Liquids
- Maximum Pressure: 3000.00
from Check-All Valve Mfg. Co.
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: Check; Lift Check; Back Flow; Poppet; Directional; Hydraulic; Relief; Anti-Siphon
- Valve Size: 0.38
- Media: Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Liquids
- Maximum Pressure: 10000.00
from Check-All Valve Mfg. Co.
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: Check; Lift Check; Back Flow; Poppet; Directional; Hydraulic; Relief; Anti-Siphon
- Valve Size: 0.38
- Media: Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Liquids
- Maximum Pressure: 3000.00
from Check-All Valve Mfg. Co.
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: Check; Lift Check; Back Flow; Poppet; Directional; Hydraulic; Relief; Anti-Siphon
- Valve Size: 0.38
- Media: Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Liquids
- Maximum Pressure: 5000.00
from Check-All Valve Mfg. Co.
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: Check; Lift Check; Wafer; Back Flow; Poppet; Directional; Hydraulic; Relief; Anti-Siphon
- Valve Size: 0.50
- Media: Water; Hot Water; Cold Water ; Ground Water; Potable Water; Salt Water (optional feature); Liquids
- Primary Material: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium