Petrol pump & industrial supplies
OPW Pressure Vacuum (PV) Valve for Vent Pipe
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Product details
Model: OPW Vent-Line PV Valve | Application: Petroleum Storage Tank Venting
Description:
The OPW Pressure Vacuum (PV) Valve is a safety-critical component designed for use on vent pipes of underground and aboveground petroleum storage tanks. It controls the internal pressure and vacuum levels within the tank by allowing air to enter or escape when preset pressure or vacuum thresholds are reached, helping to prevent evaporation loss, over-pressurization, and vacuum damage.
Made from high-grade, fuel-compatible materials, this valve is factory-calibrated to open at specific pressure/vacuum settings, ensuring the tank remains within safe operating limits. It also acts as a flame arrestor to prevent flame propagation into the tank through the vent line, offering additional protection in hazardous environments.
Key Features:
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Size: 2" and 3" NPT or BSP male thread (standard)
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Material: Heavy-duty cast aluminum body with stainless steel internal components
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Pressure Setting: Typically opens at +2.5 to +6.0 inches of water column
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Vacuum Setting: Opens at -6.0 to -10.0 inches of water column
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Flame Arrestor: Integral flame arrestor element for explosion protection
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Corrosion Resistance: Designed for harsh outdoor and hydrocarbon-rich environments
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Protective Cap: Rain shield and insect screen included for outdoor installations
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Maintenance: Easy-access design for servicing and cleaning
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Certification: Complies with API 2000 / UL / NFPA standards (model-dependent)
Applications:
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Underground Storage Tanks (USTs) at petrol pumps
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Aboveground Fuel Storage Tanks
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Vent lines of diesel, petrol, and ethanol-blended fuel tanks
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Compatible with tanks used in IOCL, HPCL, BPCL, Reliance, Shell, Essar installations
Advantages:
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Minimizes vapor losses and environmental impact
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Prevents tank rupture or collapse due to pressure/vacuum changes
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Protects fuel quality by limiting air ingress
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Enhances safety with built-in flame arresting design
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Long service life with rugged, corrosion-resistant construction