End of Line Pressure Vacuum Relief Valve
Resistant
Sealing
Operation
Long Life
Alis Valves is a leading manufacturer of End of Line Pressure Vacuum Relief Valves designed to protect storage tanks and process systems from excessive pressure buildup and vacuum conditions. Installed at the end of vent lines, these valves allow controlled release of vapors to atmosphere, maintaining safe internal tank pressure. With precision-engineered settings and durable construction, they ensure reliable operation in demanding industrial environments.
Specifications
Size Range
DN 25 to DN 300
Body Material
Carbon Steel / Stainless Steel / Aluminum
Operation
Automatic
Temperature Range
-20°C to +200°C (Depends on Material)
Leakage
Tight Sealing (As per API Standards)
Set Pressure Range
As per application (Low Pressure / Vacuum)
Seat Material
PTFE / Soft Seated
Mounting
End of Line (Vent Outlet)
Media
Vapors, Gases, Air
Product Images
Frequently Ask Questions
An End of Line Pressure Vacuum Relief Valve is an automatic tank-venting valve installed at the end of a vent line to protect storage tanks from excessive internal pressure and vacuum conditions.
It is called an End of Line Pressure Vacuum Relief Valve because it is installed at the outlet/end of a tank vent line rather than directly on the tank nozzle.
A properly sized and correctly set valve helps protect the tank against pressure and vacuum conditions that could exceed its design limits.
Alis Valves is an End of Line Pressure Vacuum Relief Valve manufacturer and supplier in India, offering automatic pressure-vacuum protection solutions for storage tanks, vent lines, oil & gas, refinery, petrochemical and chemical applications.
When tank pressure exceeds the preset pressure, the pressure side opens to release vapors. When tank pressure falls below the vacuum setting, the vacuum side opens to allow air or suitable gas into the tank.
Its primary purpose is to protect the storage tank from overpressure and vacuum while controlling normal tank breathing.
An End of Line PVRV is intended primarily for normal pressure/vacuum protection and tank breathing.
An Emergency Vent Valve provides additional high-capacity venting for abnormal conditions requiring rapid pressure relief.
