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Backflow Assemblies

Backflow Assemblies

Watts Backflows include LF909, LF009, LF007 etc.

  • LF7R

    LF7R

    Watts 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 modules, and stainless steel springs. Series LF7R is designed for non-health hazard residential water system containment, continuous pressure applications. It is installed immediately downstream of the residential water meter, in a vertical or horizontal position. Check with local inspection authorities for installation requirements. Minimum Working Pressure: 10psi (69 kPa) Maximum Working Pressure: 175psi

  • 9BD

    9BD

    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 check valve, and an atmospheric vent. Series 9BD is designed for continuous pressure applications and complies with FDA food additive regulations. Maximum Working Pressure: 150psi

  • 9D

    9D

    Watts Series 9D Dual Check Valves with Intermediate Atmospheric Vent prevent the reverse flow of hot or cold polluted water from entering into the potable water supply. It consists of a brass body with stainless steel internal parts, integral strainer, and two durable, tight-sealing, rubber check valves. Series 9D is designed for continuous pressure, non-health hazard applications in smaller supply lines, such as laboratory equipment, processing tanks, sterilizers, dairy equipment, and specifically for boiler feed lines. Minimum Working Pressure: 25psi (172kPa), Maximum Working Pressure: 175psi

  • LFH7 / LFH7C

    LFH7 / LFH7C

    Watts Series LFH7C Lead Free* Dual Check Valve with Hose Connection prevent the reverse flow of polluted water from entering into the drinking water supply at individual outlets. It consists of a chrome-plated Lead Free* brass body construction, with two independently operating check valves, stainless steel springs, pressure plates, and chrome-plated hose connection. Series LFH7C is designed for non-health hazard residential water system containment, continuous pressure applications, such as wash-down sinks with a hose-type device. Check with local inspection authorities for installation requirements. Minimum Working Pressure: 10psi (69kPa), Maximum Working Pressure: 150psi

  • LFNLF-9

    LFNLF-9

    Watts 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 diaphragm and discs. Series LFNLF-9 is designed for health hazard, non-continuous pressure applications. It is specifically designed for laboratory faucets where portable hoses can be attached. Maximum Working Pressure: 150psi

  • LFN9 / LFN9C

    LFN9 / LFN9C

    Watts 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 designed for non-health hazard, continuous pressure applications. Series LFN9C comes with chrome plated finish. Maximum Working Pressure: 125psi

  • SD-2 / SD-3

    SD-2 / SD-3

    Watts Series SD-2 / SD-3 Dual Check Valves with Atmospheric Port & Strainer (SD-3 Only) for Carbonated Beverage Machines prevent the reverse flow of polluted water, such as carbon dioxide gas and carbonated water, from entering into the potable water supply due to backpressure backflow. It consists of stainless steel body construction with internal rubber components and is designed for continuous or intermittent pressure applications. Series SD-3 has an atmospheric port that provides visual indication of failure of the second check and a wye pattern strainer. Series SD-3 is available in a variety of models and is ideal for use on post-mix carbonated beverage equipment and dispensing equipment for tea and coffee. Maximum Working Pressure: 150psi

  • LF007

    LF007

    Watts 007 Double Check Backflow Preventer

    The Watts 007 is a double check valve assembly. Production began in 1989. All versions in the 1/2"-2" size have bronze bodies with in-line modular check assemblies that are removed from a single cover on the top. Check modules are held in the body by a retainer. Check seats are replaceable. All springs are contained when the cover is removed. There have been several modifications. Repair kits are different. The original design was the 007 model produced from 1989-1991. From 1991-1993 the 007M1 model was produced. The difference being in 3/4"-1" the disc holders on the newer M1 are plastic instead of bronze and in all sizes a change in the check seat dimensions. The check cover is bolted on in the 007 and the 007M1 except the 3/4"-1" 007 which had a screw on cover. The 007M2 design began in 1993. The major change in the 007M2 was the downsizing of the body which also downsized the internal parts. In 1993 the 1/2" 007 began production. In 1998 the 3/4" 007M3 was introduced. The U007 series was developed in sizes 3/4"-2" which incorporates a union end into the body. The U007A series utilizes a 90 degree elbow for an up and down piping orientation. The 007PC series is a polymer coated bronze assembly.

  • LF709 LBF

    LF709 LBF

    Watts 709 is a double check assembly. The 3/4"-2" were discontinued in 1993. The 2 1/2"-10" sizes began production in 1979. The 3/4"-3" size body is constructed of bronze. In the 3/4"-2" sizes the internal hardware parts are made of plastic and bronze. Watts manufactured a hot water version available on the 3/4"-2" sizes. This was designated by an HW after the model. The 2 1/2"-10" size bodies are cast iron with a fused epoxy coating. The 2 1/2"-3" size are available in either bronze or fused epoxy coated cast iron. Internal hardware parts are made of bronze and stainless steel. Check seats are replaceable on all sizes. Double check detector assembly. Production began in 1979. The assembly utilizes the 709 design on the main valve and the bypass unit. In 1991 the bypass was changed to the 007M1 model. In 1993 the bypass was changed to the model 007M2. In 1998 the bypass was changed to the 1/2" 007.

  • LF719

    LF719

    Watts 719 is a double check assembly. Production began in 2003. This has a poppet style check. Check covers unscrew from the top of the body. The springs are not contained. The body is made from a bronze alloy. The R10 and R15 designation refers to models that used one size body to fit several smaller sizes by assembling smaller ball valves on the ends.

  • SS007

    SS007

    Watts 007 is a double check valve assembly. Production began in 1989. All versions in the 1/2"-2" size have bronze bodies with in-line modular check assemblies that are removed from a single cover on the top. Check modules are held in the body by a retainer. Check seats are replaceable. All springs are contained when the cover is removed. There have been several modifications. Repair kits are different. The original design was the 007 model produced from 1989-1991. From 1991-1993 the 007M1 model was produced. The difference being in 3/4"-1" the disc holders on the newer M1 are plastic instead of bronze and in all sizes a change in the check seat dimensions. The check cover is bolted on in the 007 and the 007M1 except the 3/4"-1" 007 which had a screw on cover. The 007M2 design began in 1993. The major change in the 007M2 was the downsizing of the body which also downsized the internal parts. In 1993 the 1/2" 007 began production. In 1998 the 3/4" 007M3 was introduced. The U007 series was developed in sizes 3/4"-2" which incorporates a union end into the body. The U007A series utilizes a 90 degree elbow for an up and down piping orientation. The 007PC series is a polymer coated bronze assembly. The SS007 series is available in sizes 1/2"-1". The SS007 has a stainless steel body assembly.


  • 757 / 757N

    757 / 757N

    Watts 757 Series is a double check assembly. This model was manufactured under the Hunter name from 2000-2002. In 2002 Watts bought the Hunter models and began production as the Watts models 757 and 757A. These are also sold under the Ames name as models C200 and C200A. The body is stainless steel tubing. To access the checks, a movable sleeve is mounted over the access cover. On the 2 1/2"-6" sizes the sleeve slides over the body to access the check components. On the 8"-10" sizes the sleeve is attached by two grooved couplings. The check components are modular made of of Noryl plastic. The checks utilize a torsion spring which is contained when the check module is removed from the body. The check spring must be extended and controlled with a pin or screwdriver to replace the check disc. The check disc may be either an EPDM or silicone. The "A" designation refers to a bi-link check mechanism while the "non A" version utilizes a tri-link check mechanism. The body length can be up to 1" shorter than shown in the dimension chart on versions produced before 2003.

  • 774

    774

    Watts 774 Series is a double check assembly. In 1997 the Watts Company purchased the Ames Company. Watts began marketing the Ames 2000SS as the Watts 774 and the 2000SE as the 774X. The body is stainless steel. The model has a modular check design so that springs will be contained when the cover is removed. The check mechanism threads into the body and is a cam operated design made of glass filled Noryl. In the 2 1/2"-6" size the check assemblies are not field repairable and the whole check module must be replaced for repair. The difference between the 774 and 774X is the 774X has parts one size smaller than the pipe size. The 8"-10" check does have a rubber disc that is field replaceable.

  • 007DCDA / 007M1DCDA

    007DCDA / 007M1DCDA

    Watts 007 is a double check detector assembly. Production began in 1995. The assembly is the main valve of the 007. Several different bypass assemblies. The models used for the bypass were 3/4" 007M1, 3/4" 007M2, or 1/2" 007.

  • 709DCDA

    709DCDA

    Watts 709DCDA is a double check detector assembly. The 2 1/2"-10" sizes began production in 1979. The 2 1/2"-10" size bodies are cast iron with a fused epoxy coating. The 2 1/2"-3" size are available in either bronze or fused epoxy coated cast iron. Internal hardware parts are made of bronze and stainless steel. Check seats are replaceable on all sizes. Double check detector assembly. Production began in 1979. The assembly utilizes the 709 design on the main valve and the bypass unit. In 1991 the bypass was changed to the 007M1 model. In 1993 the bypass was changed to the model 007M2. In 1998 the bypass was changed to the 1/2" 007.

  • 757DCDA / 757NDCDA (Leaded)

    757DCDA / 757NDCDA (Leaded)

    Watts 757 Series is a double check assembly. This model was manufactured under the Hunter name from 2000-2002. In 2002 Watts bought the Hunter models and began production as the Watts models 757 and 757A. These are also sold under the Ames name as models C200 and C200A. The body is stainless steel tubing. To access the checks, a movable sleeve is mounted over the access cover. On the 2 1/2"-6" sizes the sleeve slides over the body to access the check components. On the 8"-10" sizes the sleeve is attached by two grooved couplings. The check components are modular made of of Noryl plastic. The checks utilize a torsion spring which is contained when the check module is removed from the body. The check spring must be extended and controlled with a pin or screwdriver to replace the check disc. The check disc may be either an EPDM or silicone. The "A" designation refers to a bi-link check mechanism while the "non A" version utilizes a tri-link check mechanism. The body length can be up to 1" shorter than shown in the dimension chart on versions produced before 2003.

  • LF757DCDA / LF757NDCDA (Lead Free)

    LF757DCDA / LF757NDCDA (Lead Free)

    Watts LF757 Series is a double check assembly. This model was manufactured under the Hunter name from 2000-2002. In 2002 Watts bought the Hunter models and began production as the Watts models 757 and 757A. These are also sold under the Ames name as models C200 and C200A. The body is stainless steel tubing. To access the checks, a movable sleeve is mounted over the access cover. On the 2 1/2"-6" sizes the sleeve slides over the body to access the check components. On the 8"-10" sizes the sleeve is attached by two grooved couplings. The check components are modular made of of Noryl plastic. The checks utilize a torsion spring which is contained when the check module is removed from the body. The check spring must be extended and controlled with a pin or screwdriver to replace the check disc. The check disc may be either an EPDM or silicone. The "A" designation refers to a bi-link check mechanism while the "non A" version utilizes a tri-link check mechanism. The body length can be up to 1" shorter than shown in the dimension chart on versions produced before 2003.

  • 774DCDA

    774DCDA

    Watts 774 Series is a double check assembly. In 1997 the Watts Company purchased the Ames Company. Watts began marketing the Ames 2000SS as the Watts 774 and the 2000SE as the 774X. The body is stainless steel. The model has a modular check design so that springs will be contained when the cover is removed. The check mechanism threads into the body and is a cam operated design made of glass filled Noryl. In the 2 1/2"-6" size the check assemblies are not field repairable and the whole check module must be replaced for repair. The difference between the 774 and 774X is the 774X has parts one size smaller than the pipe size. The 8"-10" check does have a rubber disc that is field replaceable.

  • LF009

    LF009

    Watts Series LF009 Lead Free* 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 Lead Free* bronze body construction (1/4 to 2 in.) or Lead Free* FDA approved epoxy coated cast iron (2 1/2 to 3 in.), two, in-line independent check valves, replaceable check seats with an intermediate relief valve, and ball valve test cocks. Series LF009 is ideal for protection of health hazard cross-connections or for containment at the service line entrance. Check with local water authorities for installation requirements. Maximum Working Pressure: 175psi

     

  • LFU009 / U009A

    LFU009 / U009A

    Watts Series LFU009 Reduced Pressure Zone Assemblies are designed to protect potable water supplies in accordance with national plumbing codes and water authority requirements. The swivel feature in the series allows for it to be used in a variety of installations, including the prevention of health hazard cross-connections in piping systems or for containment at the service line entrance. This series features two in-line, independent check valves, captured springs and replaceable check seats with an intermediate relief valve. Its compact modular design facilitates easy maintenance and assembly access. Sizes 1/2in. – 1in. (15 – 25mm) shutoffs have tee handles. It consists of Cast copper silicon alloy body construction for durability. The LFU009 features Lead Free* construction to comply with Lead Free* installation requirements. Maximum Working Pressure: 175psi

     

  • LF919

    LF919

    Watts 919 RPZ (reduced pressure assembly) was first produced in 2003. The body is made of a bronze alloy. The checks have a poppet style check. Check covers unscrew from the body. The check springs are not contained. There will be tension from the relief valve spring as you remove the cover.

     

  • LF909 / LF909HW

    LF909 / LF909HW

    Watts Series LF909 Lead Free* 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 a Lead Free* Cast Copper Silicon Alloy body construction, bronze ball valve shutoffs, and bronze test cocks. Series LF909 features a "air-in/water-out" design principle for protection during emergency combined backsiphonage and backpressure conditions. It is ideal for health hazard cross-connections or for containment at the service line entrance. Check with local water authorities for installation requirements. Maximum Working Pressure: 175ps

     

  • SS009

    SS009

    Watts Series SS009 Stainless Steel 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 a stainless steel body construction, two stainless steel check valves, stainless steel check seats, hydraulically-operated relief valve, and stainless steel, vandal-resistant ball valve test cocks. Series SS009 is ideal in applications where the downstream liquid is of a composition where bronze material would be damaged or if it is desirable to eliminate trace elements of lead and copper. Series SS009 is ideal in industrial or plant applications, in medical/diagnostic equipment, reverse osmosis systems, and other health hazard piping systems. Check with local water authorities for installation requirements. Maximum Working Pressure: 175psi

     

  • 957 / 957N / 957Z

    957 / 957N / 957Z

    Series 957, 957N, 957Z 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 stainless steel body, sleeve and torsion spring check valves. Series 957, 957N, 957Z has a compact design that is 70% lighter than traditional designs, and is ideal for health hazard piping applications for protection against backsiphonage or backpressure. Check with local water authorities for installation requirements. Maximum Working Pressure: 175psi

     

  • 994

    994

    Watts 994 is a reduced pressure assembly. Production began in 1998. In 1997 the Watts Company purchased the Ames Company and began marketing the Ames 4000 SS as the Watts 994. The body is made of stainless steel with a single access cover. The check design is modular. In the 2 1/2"-6" size the check assemblies are not field repairable and the whole check module must be replaced for repair. The check is made of glass filled Noryl and is cam operated. The relief valve is attached to the check body by threads and uses an external sensing line.

     

  • 994BLT / 994HMB

    994BLT / 994HMB

    Watts Model 994HMB / 994BLT 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 of a stainless steel body construction with stainless steel internal parts, meter housing, measuring element, and permanently sealed register to measure flow and protect the meter and backflow preventer from damage due to excessive flow. Series 994HMB meets AWWA C701 meter requirements and is ideal for use in existing hydrant meter hookups. Factory assembled and tested. Watts 994BLT is Less Meter.

     

  • LF909 (2.5"-10")

    LF909 (2.5"-10")

    Watts Series LF909 Lead Free* 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 FDA approved epoxy coated cast iron body construction with stainless steel trim, Lead Free* cast copper silicon alloy ball valve shutoffs, and Lead Free* copper silicon alloy test cocks. Series LF909 features a "air-in/water-out" principle for protection during emergency combined backsiphonage and backpressure conditions It is ideal for health hazard cross-connections or for containment at the service line entrance. Check with local water authorities for installation requirements. The LF909 features Lead Free* construction to comply with Lead Free* installation requirements. Maximum Working Pressure: 175psi

     

  • 909RPDA

    909RPDA

    Watts Series 909RPDA Reduced Pressure Detector Assemblies prevent the reverse flow of fire protection system substances from being pumped or siphoned into the potable water supply. The 909RPDA incorporates a meter to detect ground leaks and unauthorized illegal taps, greatly reducing annual water expenses. It consists of an epoxy-coated cast iron body with stainless steel trim, bronze gate valves, a pressure-differential relief valve, shutoff valves, and bronze ball-type test cocks. Series 909RPDA provides maximum flow at low pressure drop utilizing the "air-in/water-out" design principle for protection during emergency combined backsiphonage and backpressure conditions. Maximum Working Pressure: 175psi

     

  • 957RPDA / 957NRPDA / 957ZRPDA (Leaded)

    957RPDA / 957NRPDA / 957ZRPDA (Leaded)

    Watts Series 957, 957N, 957Z 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 stainless steel body, sleeve and torsion spring check valves. Series 957, 957N, 957Z has a compact design that is 70% lighter than traditional designs, and is ideal for health hazard piping applications for protection against backsiphonage or backpressure. Check with local water authorities for installation requirements. Maximum Working Pressure: 175psi .

     

  • LF957RPDA / LF975NRPDA / LF957ZRPDA (Lead Free)

    LF957RPDA / LF975NRPDA / LF957ZRPDA (Lead Free)

    Watts Series LF957RPDA, LF957NRPDA, LF957ZRPDA Reduced Pressure Detector Assemblies provide protection to the potable water system from contamination in accordance with national plumbing codes. The LF957RPDA, LF957NRPDA, LF957ZRPDA are normally used in health hazard applications to protect against backsiphonage and backpressure. The Watts LF957RPDA, LF957NRPDA, LF957ZRPDA are used to monitor unauthorized use of water from the fire protection system. They feature Lead Free* construction to comply with Lead Free* installation requirements.

     

  • 994RPDA

    994RPDA

    Watts Series 994DCDA Reduced Pressure Detector Assemblies prevent the reverse flow of fire protection system substances from being pumped or siphoned into the potable water supply. The 994DCDA incorporates a meter to detect ground leaks and unauthorized illegal taps, greatly reducing annual water expenses. It consists of a stainless steel body, stainless steel internal parts, thermoplastic check valves and a bottom-mounted relief valve. Series 994DCDA is half the weight of competitive designs, and its short lay length makes installation and maintenance simple and easy. It is ideal for installation on fire protection systems. Check with local water authorities for installation requirements. Maximum Working Pressure: 175psi

     

  • 188A

    188A

    Watts 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 to prevent spilling. Maximum Pressure:125psi

     

  • LF288A

    LF288A

    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 disc and an atmospheric vent to prevent spilling. Series LF288A has a full size orifice to assure pipe size capacity and maximum flow. It is ideal for low flow, non-continuous hot or cold water health hazard installations such as on laboratory equipment. Maximum Pressure:125psi

     

  • LF289

    LF289

    Series LF289 Spill Resistant Atmospheric Vacuum Breakers prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It consists of Lead Free* Copper Silicon Alloy (LF289), silicone rubber check disc, stainless steel springs, a lightweight plastic disc float that minimizes deposits and scaling, a spring-loaded atmospheric vent with O-ring, and a spill-resistant diaphragm seal. Series LF289 has a compact, space-saving design, and is ideal for health hazard applications such as on chemical dispensers or factory machine equipment. Maximum Pressure:150psi (10.34 bar), Minimum Pressure: 8psi

     

  • LF8

    LF8

    Watts 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 a rubber diaphragm and disc. The LF8 Series are ideal for inside and outside, health hazard installations requiring non-continuous pressure such as service sinks, swimming pools, photo developing tanks, laundry tubs, wash racks, dairy barns, marinas, and general outside gardening uses. Check with local inspection authorities for installation requirements. Maximum Pressure:125psi

     

  • 8A

    8A

    Watts Series 8A 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 (8A) or chrome finish (8AC), stainless steel working parts, a rubber diaphragm and disc, and a draining stem. Series 8A's non-removal feature prevents the removal of the valve once installed. It is ideal for inside and outside, health hazard installations requiring non-continuous pressure such as service sinks, swimming pools, photo developing tanks, laundry tubs, wash racks, dairy barns, marinas, and general outside gardening uses. Check with local inspection authorities for installation requirements. Maximum Pressure:125psi

     

  • 8B

    8B

    Watts Series 8B 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 (8B) or chrome finish (8BC), stainless steel working parts, a rubber diaphragm and disc, a draining stem, and a break-away set screw for tamper-resistant installations. Series 8B is ideal for inside and outside, health hazard installations requiring non-continuous pressure such as service sinks, swimming pools, photo developing tanks, laundry tubs, wash racks, dairy barns, marinas, and general outside gardening uses. Check with local inspection authorities for installation requirements. Maximum Pressure:125psi

     

  • 8FR

    8FR

    Watts 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 diaphragm and disc, and a freeze relief feature that protects the valve from freeze damage. Series 8FR is ideal for inside and outside, health hazard installations requiring non-continuous pressure such as service sinks, swimming pools, photo developing tanks, laundry tubs, wash racks, dairy barns, marinas, and general outside gardening uses. Check with local inspection authorities for installation requirements. Maximum Pressure:125psi

     

  • NF8

    NF8

    Watts 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 working parts, a rubber diaphragm and disc, and a draining stem. The NF8 permits manual draining for freezing conditions. Maximum Pressure:125psi

     

  • LFN388

    LFN388

    Watts Series LFN388 represents a line of vacuum breakers designed to prevent backsiphonage of contaminated water into the potable water supply. The LFN388 features Lead Free* construction to comply with Lead Free* installation requirements.They feature a lightweight, durable "disc float" suitable for temperatures up to 180°F (82°C) which closes the atmospheric vent to prevent spilling under all rates of flow. They are ideally recommended for low flow installations such as laboratory equipment which use small amounts of water. They also contain a durable silicone disc which has high heat and water hammer shock resistance and assures tight seating with the lightest of seating contact. Maximum Pressure:125psi

     

  • LF008PCQT

    LF008PCQT

    Watts 008 spill resistant pressure vacuum breaker. Production began in 1994. The body is bronze. The poly coated body version designated as the model 008PC. The check and air inlet is a modularized single cartridge.

    Series LF008PCQT is Lead Free and still Available!

    Series 008PCQT is currently Obsolete!

    Series 008QT is currently Obsolete!

     

  • LF800M4QT

    LF800M4QT

    Watts 800M4 QT pressure vacuum breaker. Production began in 1994. This is a bronze bodied unit. The check spring is contained. The check seat is replaceable. A seat removal tool is needed. The test cocks for this model are located on the ball valves. The 800M4 is a redesign of the 800M2 and 800M3 series with the addition of a replaceable check seat. In 1995 the 800 M4 FR model was introduced. This model contains a small relief valve built into the air inlet float to prevent damage if it freezes.

     

  • LF800M4FR

    LF800M4FR

    Watts 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 with silicone rubber O-ring seal, a lightweight plastic disc float, a built-in relief valve to protect the internal components and the body from freezing, tee handle or lever handle shutoffs, and test cocks for winterization draining. Series 800M4FR is ideal in continuous pressure health hazard applications where exposure to sudden freezing conditions such as on irrigation systems and industrial process water systems can occur. Maximum Pressure: 150psi