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Wilkins 420XL 1" Pressure Vacuum Breaker - 1" FNPT x 1" FNPT

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Original Price $408.83
Current Price $306.62
SKU 1-420XL
In Stock (9)

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The Wilkins 420XL 1" Pressure Vacuum Breaker (PVB) protects potable water from backsiphonage in residential irrigation and potable water systems. Designed for durability, the 420XL features an integral freeze-relief poppet and a modular construction for faster repairs and lower service costs.

  • Nominal size: 1" with 1" FNPT x 1" FNPT connections for inline installation.
  • Low-lead cast bronze body (ASTM B584) with 300-series stainless steel springs and silicone disc for corrosion resistance.
  • Integral anti-freeze relief poppet reduces freeze damage risk in intermittent, non-seasonal freezing conditions.
  • Rated to 175 psi and up to 140°F for typical irrigation and potable water applications.
  • ASSE 1020 listed and UPC/cUPC recognized; designed to prevent backsiphonage of contaminated water.
  • Includes full-port quarter-turn ball valve and is supported by repair kits and specification documentation.

Why choose the 420XL: Compact, serviceable, and lead-free, the Wilkins 420XL is a reliable choice for protecting lines where a pressure vacuum breaker is required. Refer to the included specification sheet and local codes for proper installation and seasonal maintenance.

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Frequently Asked Questions

What size and connection type does the 420XL use?
The 420XL is a 1" nominal PVB with 1" FNPT x 1" FNPT connections and is designed for inline installation.
What are the operating pressure and temperature ratings?
Rated to 175 psi and up to 140°F for typical irrigation and potable water applications.
Does the 420XL provide freeze protection?
It has an integral freeze-relief poppet for light freeze protection but seasonal winterization per local codes is recommended.

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