4" 774 Double Check Detector Assembly (774DCDA-OSY-CFM)
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4" 774 Double Check Detector Assembly (774DCDA-OSY-CFM)
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$4,208.88 each
Out of Stock
Out of Stock
Get it Wed, Oct 11 - Fri, Oct 20

Lift Gate

This product weighs 344 lbs. and may require the use of a lift gate. If you do require a lift gate at your delivery, you'll have the option to add this FREE of charge when you checkout.
Free Shipping This item ships free
Easy Returns No restocking fee for 90 days

Product Highlights

Size icon
Material icon
Stainless Steel
Max Pressure (PSI) icon
175 PSI
Max Temp (F) icon
110°F Max Temp
Min Temp (F) icon
33°F Min Temp


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."
  • Specs




    Stainless Steel

    Max Pressure (PSI):


    Max Temp (F):


    Min Temp (F):



    UL/FM outside stem and yoke resilient seated gate valves

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    Ordered the wrong product? Item damaged in transit? Our 3-step process makes returning products easy – even up to a year after purchase – with no restocking fees on returns made within 90 days.
    Return Policy