Water Supply

PVB-501 | Pressure Vacuum Breaker


  • Product Catalog:
  • Product Drawings:
175 psi 1/2”, 3/4”, 1”


The Pressure Vacuum Breaker PVB-501 is designed to provide maximum protection against backflow caused by back siphonage or backpressure. Backflow may cause infiltration of chemicals, fertilizers and/or other pollutants into potable water systems.
The VB-501 is reliable and easily maintained, without the need for special tools.

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Product Features

  • Sizes: 1/2", 3/4", 1"
  • Maximum working pressure: 175 psi / 12.5 bar
  • Maximum working temperature: 140° F / 60° C
  • End connections: threaded NPT - ANSI B1.20.1


The Pressure Vacuum Breaker is ASSE 1020 approved, and supplied with full port ball valves. The main body and bonnet are made of reinforced nylon.
The entire assembly is accessible for maintenance and testing without removing the device from the line.
* Always consult local codes for installation methods, approvals and guidance. A.R.I recommends an annual test for any Backflow Preventer.

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Last Updated on: Tuesday, 27 February 2024