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757DCDA

Double Check Detector Assemblies, Stainless Steel

Series 757DCDA, 757NDCDA Double Check Detector Assemblies prevent the backflow of pollutants that are objectionable but not toxic, from entering into the potable water supply. Compact housings consist of two independently operating tri-link check valves, two shutoff valves, and four test cocks. They feature a stainless steel housing and sleeve and are 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. This Series is used primarily on fire sprinkler lines when it is necessary to monitor unauthorized use of water. Maximum Working Pressure: 175psi (12.06 bar).

Features

  • Bypass meter monitors unauthorized use of water
  • Grooved fittings allow for integral pipeline adjustment
  • Tri-link checks provide lowest pressure loss and produce drip-tight closure against reverse flow
  • Extremely compact and lightweight design

Select a Model

Select options below to identify the UPC, Order Code, and Repair Kit for a specific 757DCDA

Approval/Certification Information

For product-specific approval information, please refer to the product’s specification sheet or ask a Watts representative. For general information regarding any approval certification partners identified in the specification sheet, please visit our certification partners’ websites:


ASSE CSA FM Approvals NSF
UL ULC USC WQA