Potable Water Backflow Preventers

Seats and inserts, which are important components in the valve industry, as a critical component, PTFE is very often to choose as the raw material. PTFE provides a low friction seat, with excellent media compatibility. Filled grades provide wear resistance and can support seating loads of the higher... [See More]

• Media: Chemical; Hydraulic; Water; Hot Water; Cold Water  ; Ground Water (optional feature); Potable Water; Salt Water; Wastewater (optional feature); Gasoline / Diesel Fuel; High Purity; LP Gas; Specialty Corrosive

Dechengwang is a specialized Fluoropolymer components manufacturer. Since 2006, the material range expaned from Virgin PTFE to Modified PTFE, PTFE compound, PEEK, PFA, PCTFE, PVDF, PI, PPS and PEI material. The use of fluoroplastic has many advantages in manufacturing and engineering, widely used in... [See More]

• Media: Chemical; Hydraulic; Water; Hot Water; Cold Water  ; Potable Water; Salt Water; Wastewater (optional feature); Gasoline / Diesel Fuel; High Purity; LP Gas; Specialty Corrosive; Steam (optional feature)

The Series 3000BM1 Double Check Detector Assembly (DCDA) is specifically designed to protect against possible backpressure and backsiphonage conditions for non-health hazard (i.e., pollutant) application in accordance with Local Governing Water Utility Code. This device assembly is primarily used on... [See More]

• Media: Water; Hot Water; Cold Water  ; Potable Water
• Maximum Pressure: 175.00

• Valve Size: 2.00
• Media Temperature: 33 to 140

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]

• Media: Air; Chemical; Hydraulic; 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
• Maximum Pressure: 3000.00

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

MasterSeries® backflow prevention assemblies aren't just Lead Free. We also redesigned the check and relief valves for superior performance. [See More]

• Media: Water; Potable Water
• Maximum Pressure: 10.00 to 175.00

• Valve Size: 2.50 to 10.00
• Media Temperature: 33 to 140

Series 2000B Double Check Valve Assemblies prevent the backflow of contaminated water into the potable water supply. It consists of a bronze body construction that is easy to maintain and service. Series 2000B is ideal at referenced cross-connections identified as non-health hazard applications. [See More]

• Media: Water; Hot Water; Cold Water  ; Potable Water
• Maximum Pressure: 175.00

• Valve Size: 0.50 to 2.00
• Media Temperature: 33 to 140

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]

• Media: Air; Chemical; Hydraulic; 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
• Maximum Pressure: 1500.00 to 5000.00

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

Series 2000B-FP Double Check Valve Assemblies with Gear Operated Slow Close Isolation Valves prevent the backflow of contaminated water into the potable water supply. It consists of a bronze body construction that is easy to maintain and service. Series 2000B-FP is ideal at referenced... [See More]

• Media: Water; Hot Water; Cold Water  ; Potable Water
• Maximum Pressure: 175.00

• Valve Size: 1.00 to 2.00
• Media Temperature: 33 to 140

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]

• Media: Air; Chemical; 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
• Maximum Pressure: 3000.00

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

Series 4000B Reduced Pressure Zone Assemblies prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage and or backpressure. It consists of bronze body construction, two, in-line independent check valves, replaceable check seats with an intermediate... [See More]

• Media: Water; Hot Water; Cold Water  ; Potable Water
• Maximum Pressure: 175.00

• Valve Size: 0.50 to 2.00
• Media Temperature: 180

The CAV series of valves are not catalog items but rather are custom designed and tailored to meet customer specific connections or valve configurations. If you have a check valve application where our standard catalog items do not quite match what you are looking for, contact our sales department... [See More]

• Media: Air; Chemical; Hydraulic; 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

• Primary Material: Aluminum; Brass / Bronze; Stainless Steel (optional feature); Steel (optional feature); Exotic Metal; Titanium, Monel

The Colt LFC300, LFC300N Double Check Detector Assemblies are used to prevent backflow of pollutants, that are objectionable but not toxic, from entering the potable water supply system. The Colt LFC300, LFC300N maybe installed under continuous pressure service and may be subjected to backpressure. [See More]

• Media: Water; Hot Water; Cold Water  ; Potable Water
• Maximum Pressure: 175.00

• Valve Size: 2.50 to 10.00
• Media Temperature: 33 to 110

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]

• Media: Air; Chemical; Hydraulic; 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
• Primary Material: Aluminum (optional feature); Brass / Bronze; Stainless Steel; Steel; Exotic Metal; PVC; PTFE; FEP Encapsulator

• Valve Size: 0.50

The Maxim LFM300, LFM300N Double Check Detector Assemblies are used to prevent backflow of pollutants, that are objectionable but not toxic, from entering the potable water supply system. The Maxim LFM300, LFM300N may be installed under continuous pressure service and may be subjected to... [See More]

• Media: Water; Hot Water; Cold Water  ; Potable Water
• Maximum Pressure: 175.00

• Valve Size: 2.50 to 10.00
• Media Temperature: 33 to 110

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]

• Media: Air; Chemical; Hydraulic; 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
• Primary Material: Brass / Bronze; Stainless Steel; Steel

• Valve Size: 1.00

Model 4000BLT Portable Hydrant Meter Backflow Preventers prevent the reverse flow of polluted from entering into the potable water supply where flow is in one direction and the possibility of cross-connections exists, such as at a fire hydrant or other non-permanent installation. It consists of... [See More]

• Media: Water; Hot Water; Cold Water  ; Potable Water
• Primary Material: Aluminum; Stainless Steel

• Valve Size: 2.50 to 3.00

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]

• Media: Air; Chemical; Hydraulic; 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
• Maximum Pressure: 55.00

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

Model 6000HMB Portable Hydrant Meter Backflow Preventers prevent the reverse flow of polluted water from entering into the potable water supply where flow is in one direction and the possibility of cross-connections exists, such as at a fire hydrant or other non-permanent installation. It consists... [See More]

• Media: Water; Hot Water; Cold Water  ; Potable Water
• Maximum Pressure: 150.00

• Valve Size: 2.50 to 3.00
• Primary Material: Aluminum; Stainless Steel

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]

• Media: Air; Chemical; Hydraulic; 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
• Maximum Pressure: 55.00

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

Series M300Na Double Check Valve Assemblies are specifically designed for high flow fire systems to prevent the backflow of pollutants that are objectionable but not toxic, from entering into the potable water supply. Its compact housing consists of two independently operating bi-link check valves,... [See More]

• Media: Water; Hot Water; Cold Water  ; Potable Water
• Maximum Pressure: 175.00

• Valve Size: 2.50 to 4.00
• Media Temperature: 33 to 110

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]

• Media: Air; Chemical; Hydraulic; 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
• Maximum Pressure: 5000.00

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

Series 3000SS Double Check Detector Assemblies prevent the backflow of fire protection system substances from being pumped or siphoned into the potable water supply. It consists of a compact construction and short lay length, ideal for retrofit installations. It features a lightweight stainless... [See More]

• Media: Water; Hot Water; Cold Water  ; Potable Water
• Maximum Pressure: 175.00

• Valve Size: 2.50 to 12.00
• Media Temperature: 33 to 110

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]

• Media: Air; Chemical; 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
• Maximum Pressure: 1000.00

• Valve Size: 0.75
• Primary Material: Stainless Steel

Series M300, M300N Double Check Valve Assemblies are specifically designed for high flow fire systems to prevent the backflow of pollutants that are objectionable but not toxic, from entering into the potable water supply. Its compact housing consists of two independently operating tri-link check... [See More]

• Media: Water; Hot Water; Cold Water  ; Potable Water
• Maximum Pressure: 175.00

• Valve Size: 2.50 to 10.00
• Media Temperature: 33 to 110

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]

• Media: Air; Chemical; 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
• Maximum Pressure: 55.00

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

Series 3000SE Double Check Detector Assembly is ideal for space restricted retrofit installations. It's long life 300 Series stainless steel housing, along with the cartridge check assembly substantially reduces the need to service or repair the assembly. This model is 100% lead free through the... [See More]

• Media: Water; Hot Water; Cold Water  ; Potable Water
• Maximum Pressure: 175.00

• Valve Size: 2.50
• Media Temperature: 33 to 110

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]

• Media: Air; 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
• Maximum Pressure: 1000.00

• Valve Size: 1.00
• Primary Material: Stainless Steel

Series 2000SS Double Check Valve Assemblies prevent the backflow of polluted water from entering into the potable water supply. It consists of a compact construction and short lay length, ideal for retrofit installations. It features a lightweight stainless steel body and low head loss. Series... [See More]

• Media: Water; Hot Water; Cold Water  ; Potable Water
• Maximum Pressure: 175.00

• Valve Size: 2.50 to 12.00
• Media Temperature: 33 to 110

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]

• Media: Air; Chemical; Hydraulic; 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
• Maximum Pressure: 3000.00

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

Series C200, C200N Double Check Valve Assemblies prevent the backflow of pollutants that are objectionable but not toxic, from entering into the potable water supply. Its compact housing consists of two independently operating tri-link check valves, two shutoff valves, and four test cocks. It... [See More]

• Media: Water; Hot Water; Cold Water  ; Potable Water
• Maximum Pressure: 175.00

• Valve Size: 2.50 to 10.00
• Media Temperature: 33 to 140

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]

• Media: Air; Chemical; Hydraulic; 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
• Maximum Pressure: 3000.00 to 8500.00

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

Series M200, M200N Double Check Valve Assemblies are specifically designed for high flow fire systems to prevent the backflow of pollutants that are objectionable but not toxic, from entering into the potable water supply. Its compact housing consists of two independently operating tri-link check... [See More]

• Media: Water; Hot Water; Cold Water  ; Potable Water
• Maximum Pressure: 175.00

• Valve Size: 2.50 to 10.00
• Media Temperature: 33 to 110

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]

• Media: Air; Chemical; Hydraulic; 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
• Maximum Pressure: 3000.00 to 8000.00

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

Series M200Na Double Check Valve Assemblies are specifically designed for high flow fire systems to prevent the backflow of pollutants that are objectionable but not toxic, from entering into the potable water supply. Its compact housing consists of two independently operating bi-link check valves,... [See More]

• Media: Water; Hot Water; Cold Water  ; Potable Water
• Maximum Pressure: 175.00

• Valve Size: 2.50 to 4.00
• Media Temperature: 33 to 110

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]

• Media: Air; Chemical; Hydraulic; 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
• Maximum Pressure: 3000.00

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

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]

• Media: Air; Chemical; Hydraulic; 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
• Maximum Pressure: 10000.00

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

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]

• Media: Air; Chemical; Hydraulic; 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
• Maximum Pressure: 3000.00

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

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]

• Media: Air; Chemical; Hydraulic; 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
• Maximum Pressure: 5000.00

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

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]

• Media: Air; Chemical; Hydraulic; 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
• Primary Material: Brass / Bronze; Stainless Steel; Steel; Exotic Metal; Alloy 20, Alloy C-276, Titanium

• Valve Size: 0.50