Steam breather valve HV-PVRV-04

vacuumfor tankslow-pressure

A Pressure Vacuum Relief Valve (PVRV) – Pipe Away Type provides combined protection against excessive pressure and vacuum in storage tanks while allowing discharged vapors to be safely routed through connected piping.

The valve opens at the preset pressure during tank filling or thermal expansion and admits air or gas when excessive vacuum develops during pump-out or cooling. The pipe-away arrangement is particularly suitable where vapors need to be recovered, treated, or discharged to a designated safe location.

Specifications

• Design: Weight Loaded / Spring Loaded, Pipe Away
• Size: 1" to 16"
• Media: Vapor
• End Connection: Flanged
• Set Pressure: 1 to 800 mbar-g
• Set Vacuum: -1 to -800 mbar-g

Key Features

• Combined pressure and vacuum protection
• Pipe-away outlet for controlled vapor discharge
• Helps minimize vapor loss and fugitive emissions
• Precision seating for reliable sealing
• Weight-loaded or spring-loaded designs
• Suitable for vapor recovery and closed vent systems

Applications

• API 650 Storage Tanks
• Petroleum and chemical storage tanks
• Solvent storage tanks
• Vapor recovery systems
• Closed vent and process systems