Service Manuals
Double Check Valve Assemblies
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WATTS 007 |
Series 007 Double Check Valve Assemblies prevent the backflow of contaminated water into the potable water supply. It consists of a bronze (1/2 to 2 in) or fused epoxy coated cast iron (2 1/2 to 3 in) body construction that is easy to maintain and service. Series 007 is ideal at referenced cross-connections identified as non-health hazard applications. Check with local inspection authorities for installation requirements. Maximum Working Pressure: 175psi (12.06 bar). | |
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Watts 709 |
Series 709 Double Check Valve Assemblies prevent the reverse flow of polluted water from entering into the potable water supply. It has a modular check design for easy maintenance and epoxy coated (FDA approved) cast iron body construction. Series 709 is ideal at referenced cross-connections identified in non-health hazard applications. Check with local inspection authorities for installation requirements. Maximum Working Pressure: 175psi (12.06 bar). | |
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WATTS 719 |
Series 719 Double Check Valve Assemblies are designed to protect drinking water supplies from dangerous cross-connections in accordance with national plumbing codes and water authority requirements. It consists of a bronze alloy body construction and chloramine resistant elastomers. Series 719 features a separate access, top-entry check valve design for ease of maintenance and is for use at referenced cross-connections in non-health hazard applications. Check with local inspection authorities for installation requirements. Maximum Working Pressure: 175psi (12.06 bar). | |
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WATTS 757/757N |
Series 757, 757N 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 features a stainless steel housing and sleeve and is 70% lighter than traditional designs. Series 757, 757N is designed for non-health hazard applications and may be installed under continuous pressure service to protect against both backpressure and backsiphonage. Maximum Working Pressure: 175psi (12.06 bar). | |
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WATTS 757a/757Na |
Series 757a, 757Na 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 bi-link check valves, two shutoff valves, and four test cocks. It features a stainless steel housing and sleeve and is 70% lighter than traditional designs. Series 757a, 757Na is designed for non-health hazard applications and may be installed under continuous pressure service to protect against both backpressure and backsiphonage. Maximum Working Pressure: 175psi (12.06 bar). | |
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WATTS 774 |
Series 774 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 774 is ideal in applications identified by local authorities as non-health hazard. Maximum Working Pressure: 175psi (12.06 bar). | |
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WATTS SS007 |
Series SS007 Stainless Steel Double Check Valve Assemblies provide protection to the potable water supply at non-health hazard cross-connections. Series SS007 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. Typical low-hazard installations may be found in industrial or chemical plants, pulp and paper industries, hospitals, and corrosive atmospheres. Maximum Working Pressure: 175psi (12.06 bar). | |
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