Pressure Vacuum Relief Valve (PVRV)
Mirha International supplies high-performance Pressure Vacuum Relief Valves (PVRVs) designed to protect storage tanks, process vessels, and other pressurized systems from overpressure and vacuum conditions. These valves ensure safety, environmental compliance, and operational integrity by automatically relieving excess internal pressure or vacuum buildup.
🛠️ Key Features:
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Type: Dead-weight or spring-loaded
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Sizes: 2” to 12” (DN50–DN300)
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Set Pressure Range:
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Pressure Relief: Typically up to 15 psig (1.03 barg)
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Vacuum Relief: As low as -0.5 psig (-34 mbar)
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Materials:
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Body: Cast Aluminum, Carbon Steel, Stainless Steel (SS304/316)
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Sealing: Viton, PTFE, Buna-N, or EPDM
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End Connections: Flanged (ANSI 150/300), Threaded, or customized
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Leakage Rate: Complies with API 2000 or equivalent standards
⚙️ Functionality:
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Opens automatically to release internal pressure when it exceeds the set limit
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Allows inflow of air/vapor under vacuum to prevent tank collapse
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Maintains product integrity by minimizing vapor loss
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Prevents atmospheric contamination and protects tank structure
🏭 Applications:
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Above-ground storage tanks (fixed roof)
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Chemical and petrochemical vessels
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Biofuel and ethanol storage
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Food & beverage tanks
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Wastewater treatment facilities
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Pharmaceutical and hygienic process tanks
📧 Email: info@mirhainternational.com
📱 Call / WhatsApp: +92 300 2725806
📍 Location: Karachi, Pakistan – Nationwide & Export Supply
✅ Why Choose Mirha International’s PVRVs?
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Complies with API 2000, ISO, and ASME standards
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Engineered for safety, reliability, and long service life
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Available in corrosion-resistant materials for harsh environments
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Optional flame arresters, weather hoods, and lockable designs available
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Quick delivery and technical support across Pakistan