Wilkins Double Check Valve 350DA Series 65-250mm
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Designed for installation on potable water connections in fire sprinkler systems to protect against both backsiphonage and backpressure of polluted water into the potable water supply. Model 350DA provides medium level protection where a potential health hazard exists. Incorporates metered by-pass to detect leaks and unauthorized water use.


  • Extremely short lay-length for tight spaces and easy retro-fits for low hazard backflow applications.
  • Lightweight due to thin wall ductile iron, epoxy coated bodies.
  • Single grooved access cover for easy access to all internal check valve parts.
  • Reversible or replacable seat discs for easy and inexpensive maintenance.
  • Can be installed Vertically and Horizontally.
  • Extremely low pressure losses (see data sheet).
  • Bulk head fittings, no body threads.
  • Assemblies are available in flange x flange, and groove x groove ends.
  • Available in 65, 80, 100, 150, 200, 250 (mm).