Vacuum breather valve HV-PVRV-01

for tankslow-pressurestainless steel

A Breather Valve (Pressure Vacuum Relief Valve – PVRV) is designed to protect storage tanks from excessive pressure and vacuum during filling, emptying, and thermal expansion or contraction. It automatically releases excess pressure and admits air when vacuum conditions occur, helping prevent tank rupture, buckling, product loss, and fugitive emissions.

Designed in accordance with **API 2000 and ISO 28300**, the valve features precision-machined pallets and seats for reliable sealing and efficient flow performance.

Specifications

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

Key Features

• Combined pressure and vacuum protection
• Minimizes vapor loss and emissions
• Precision sealing with soft-seat options
• Weight-loaded or spring-loaded designs
• Available with open discharge configuration
• Suitable for low- and higher-pressure settings

Applications

• API 650 Storage Tanks
• Solvent and chemical storage tanks
• Petroleum and process storage systems