
Vacuum Relief / Breather Valve
Tank breathing valve that opens on vacuum or pressure to protect storage tanks from over- or under-pressure.
Technical Specifications
| Type | Pressure & Vacuum Relief (PVR) |
| Size Range | 1" to 8" (25 mm to 200 mm) |
| Body Materials | Aluminium, Carbon Steel, Stainless Steel, FRP |
| Pallet | SS316 with PTFE seat |
| Set Points | Pressure: +0.5 to +150 mbar / Vacuum: -0.5 to -60 mbar |
| End Connections | Flanged (nozzle mount) |
| Standards | API 2000, ISO 28300 |
Applications
Storage tanks, API tanks, chemical vessels, gasoline terminals
Frequently Asked Questions
About Vacuum Relief / Breather Valve — ordering, specs, delivery & compliance
What standards does the Vacuum Relief / Breather Valve comply with?+
Our Vacuum Relief / Breather Valve complies with API 2000, ISO 28300. All products are manufactured to international standards and come with full material test reports (MTR), dimensional inspection reports, and hydrostatic test certificates on request.
What materials are available for the Vacuum Relief / Breather Valve?+
The Vacuum Relief / Breather Valve is available in Aluminium, Carbon Steel, Stainless Steel, FRP. Material selection depends on your process fluid, temperature, pressure, and corrosion requirements.
What is the delivery lead time for Vacuum Relief / Breather Valve?+
Standard stock sizes are available for immediate dispatch from our Vadodara warehouse. Custom sizes and special materials typically have a lead time of 2–6 weeks depending on specifications. We serve customers across India within 1–7 business days and export to the Middle East, Southeast Asia, Europe, and the Americas with full export documentation.
Can I get a custom Vacuum Relief / Breather Valve for a specific application?+
Yes. Vajra Industrial Solutions supplies custom-engineered safety & relief valves for specific process conditions. Submit your technical requirements — including pressure class, temperature range, fluid type, end connections, and any special trim or coating needs — via our RFQ form or WhatsApp, and our engineering team will respond within 24 hours.
What pressure ratings are available for the Vacuum Relief / Breather Valve?+
The Vacuum Relief / Breather Valve is available in pressure ratings of PN10 to PN400 (ANSI Class 150 to Class 2500). Higher-pressure classes are available for critical service applications in oil & gas, power generation, and chemical processing.
How do I request a quote for the Vacuum Relief / Breather Valve?+
You can request a quote by clicking the "Request Quote" button on this page, filling out our RFQ form at vajravyuh.com/rfq, emailing us at sales@vajravyuh.com, or WhatsApping us directly at +91-9979774557. Please include quantity, size, pressure class, material grade, and end-connection type for the fastest response.
Need a Quote for Vacuum Relief / Breather Valve?
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