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Description
Application

This Wilkins Series 420FK pressure vacuum breaker assembly is designed for installation on potable water lines to protect against back-siphonage of contaminated water into the potable water supply. Supplied with an integral anti-freeze relief valve to reduce the risk of valve damage under intermittent, non-seasonal freezing conditions. Designed for use under continuous pressure. Assembly shall provide protection where a potential health hazard exists.

Materials
  • Main valve body: Cast Bronze ASTM B 584
  • Elastomers: Silicone (FDA Approved), Buna Nitrile (NSF Listed)
  • Polymers: Polypropylene (FDA Approved), Delrin (NSF Listed), Noryl (NSF Listed)
  • Springs: Stainless Steel, 300 Series

Standards Compliance
  • ASSE® Listed 1020
  • IAPMO® Listed
  • CSA® Certified
  • Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California
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Specs
Size:

1"

Type:

Repair Kit

Used With:

420 Series

Application:

Plumbing

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