Double Check Detector Assemblyvs backflow prevention

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Double Check Detector AssemblyvsDouble CheckvalveAssembly

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Series 774 Double Check Detector Assembly SIZE RANGE: 2½" through 12" 774DCDA, 6" & 8" 774XDCDA Series 774DCDA, 774XDCDA Double Check Detector Assemblies are designed for use in accordance with water utility containment requirements. It is mandatory to prevent the reverse flow of fire protection system substances, i.e., glycerin wetting agents, stagnant water and water of non-potable quality from being pumped or siphoned into the potable water supply. These models can be applied where approved by the local authority having jurisdiction on non-health hazard installations. Pressure / Temperature Suitable for supply pressure up to 175psi (12 bars) and water temperature up to 180°F (82°C) continuous. 774DCDA Data Sheet (pdf), - 774xDCDA Data Sheet (pdf)