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  • 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.