Air Receiver Safety Valves — OSHA Compliance

OSHA requires every compressed air receiver tank to be protected by a properly sized, functioning relief valve. Aquatrol’s air receiver relief valves are ASME Section VIII certified and sized for your specific receiver capacity and operating pressure. Full compliance documentation supports OSHA inspections and workplace safety certifications.

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Air Receiver Safety Compliance

Compressed air receiver tanks store energy under pressure. If overpressure occurs, the tank can rupture, causing dangerous discharge and operator injury. OSHA 29 CFR 1910.169 mandates that every receiver tank be equipped with a functioning relief valve set to open at or below the tank’s maximum allowable working pressure (MAWP).

Air receiver relief sizing is straightforward: the valve must be sized for the receiver’s maximum operating pressure and capacity (gallons or liters). A valve that’s too small cannot adequately relieve pressure; too large wastes resources and space. Our sizing tool uses tank volume and operating pressure to recommend the correct series and setting.

Regular inspection and testing are part of OSHA compliance. Annual relief valve testing confirms the valve functions correctly and holds the specified pressure. Aquatrol provides documentation and can coordinate testing. Proper maintenance and clear labeling on the tank support OSHA compliance and workplace safety.

Tank Size Operating Pressure Series Relief Capacity
20–50 gallons 80–120 PSIG 140 50–100 CFM
50–150 gallons 80–150 PSIG 55, 140 100–200 CFM
150–500 gallons 100–200 PSIG 55, 120 150–400 CFM
500+ gallons 100–300 PSIG 120, 141 250–600+ CFM
High-pressure 300–1,000 PSIG 55, 120, 141 50–300 CFM

Common Applications

  • Compressed air receiver tank relief and OSHA compliance
  • Portable and mobile compressor tank protection
  • Plant floor air receiver and distribution tank safety
  • High-pressure air storage and specialty gas tanks
  • Nitrogen and inert gas cylinder overpressure relief
  • Backup and emergency air supply tank protection
  • Pneumatic tool and equipment system relief

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Frequently Asked Questions

What does OSHA require for air receiver tanks?
OSHA 29 CFR 1910.169 requires every receiver tank to be equipped with a functioning relief valve set at or below the tank MAWP. The tank must be inspected annually, including relief valve testing. Properly sized and functioning relief is non-negotiable for OSHA compliance.
How do I know my tank’s MAWP?
Look for the stamped data plate on the tank—it shows MAWP, design pressure, capacity, and construction date. If the plate is missing or illegible, contact the tank manufacturer or consult a boiler inspector. Never guess or assume MAWP; incorrect pressure settings create safety hazards.
Do I need annual relief valve testing?
Yes. OSHA requires annual inspection and testing. Testing confirms the relief valve opens at the correct pressure and functions properly. Many facilities conduct testing every 6–12 months. Documentation of tests supports OSHA audit compliance.
Can I replace my own air receiver relief valve?
You can replace the valve if you have the right tools and follow proper procedures: depressurize the tank completely, remove the old valve, inspect the connection threads, install the new valve with proper thread sealant, and repressurize to verify operation. If unsure, contact your compressor service provider or our technical team.
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