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Series 774DCDA Double Check Detector Assemblies are designed for use in accordance with water utility non-health hazard 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.

  • Torsion spring check valve provides low head loss
  • Short lay length is ideally suited for retrofit installations
  • Stainless steel body is half the weight of competitive designs reducing installation and shipping cost
  • Stainless steel construction provides long term corrosion protection and maximum strength
  • Single top access cover with two-bolt grooved style coupling for ease of maintenance
  • Thermoplastic and stainless steel check valves for trouble-free operation
  • No special tools required for servicing
  • Compact construction allows for smaller vaults and enclosures
  • Furnished with 5/8" x 3/4" (16x19mm) bronze meter (gpm or cfm)
  • Detects underground leaks and unauthorized water use
  • May be installed horizontal or vertical ?flow up? position

    "Do not use this item for any installation or repair of potable water applications. This product does not comply with the "Safe Drinking Water Act," which requires that products meet low-lead standards in order to be used in systems providing water for human consumption (drinking or cooking). This item is for non-potable (non-human consumption) water applications only."
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    Stainless Steel
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    UL/FM outside stem and yoke resilient seated gate valves
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