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  • 007DCDA

    007DCDA

    Watts Series 007M1DCDA Double Check Detector Assembly 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 commercial fire sprinkler systems where Local Governing Code mandates protection from non-potable quality water being pumped or siphoned back into the potable water system. Maximum Working Pressure: 175psi

     

  • 007M1DCDA

    007M1DCDA

    Watts Series 007M1DCDA Double Check Detector Assembly 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 commercial fire sprinkler systems where Local Governing Code mandates protection from non-potable quality water being pumped or siphoned back into the potable water system. Maximum Working Pressure: 175psi

     

  • 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 / LF757DCDA / LF757NDCDA

    757DCDA / 757NDCDA / LF757DCDA / LF757NDCDA

    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.

  • 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.

  • 770DCDA / 772DCDA

    770DCDA / 772DCDA

    Watts 770DCDA is a double check detector assembly. Discontinued in 1997. The check bodies are made of ductile iron which is fused epoxy coated. The check has a stainless steel toggle linkage. The check springs are contained. The spring tension must be released to repair the assembly. The bronze check seats are replaceable. A seat removal tool is needed. Vulcanized clapper plates are used to seal the check. The shutoffs on the 772 are a special shutoff. The shutoffs used on the 772 are not standard. There are two different size flanges on the inlet and outlet.

    This series is currently Obsolete!

     

  • 773DCDA

    773DCDA

    Watts 773DCDA is a double check detector assembly. Manufactured only from 1998 - 1999. The internal parts are similar to the Model 709. The body was changed to provide a vertical installation capability. The body is a fused epoxy coated cast iron body. Check springs are contained. The check seats are replaceable.

    This series is currently Obsolete!

     

  • 775DCDA

    775DCDA

    Watts 775DCDA is a double check detector assembly. Production began in 1998. The 3"-6" were discontinued in 2003. In the 1/2"-2" size the body is made of nickel plated copper. There is a single cover. The checks are modular. The check modules thread into the body. The 3"-8" body is made of stainless steel. The checks are modular The check modules are repairable and thread into the body. In the 3"-8" size there is a 775N model which uses two stainless steel elbows mounted between the backflow preventer flange and shutoff flange.

    This model is currenlty obsolete! Some parts do remain, please call for availability:

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