Aquatrol Series 740 ASME Section VIII safety relief valve for air/gas service. 1/2″ inlet x 3/4″ outlet, NPT Male x Female connections, viton (fkm) seat, lift lever. Brass/Bronze construction. Manufactured by Aquatrol. American-made.
Aquatrol 740 Safety Relief Valve — 1/2″ x 3/4″ NPT, Viton (FKM) Seat, ASME VIII Air/Gas
$263.31
Ships in 10-14 DaysAquatrol Series 740 ASME Section VIII safety relief valve for air/gas service. 1/2″ inlet x 3/4″ outlet, NPT Male x Female connections, viton (fkm) seat, lift lever. Brass/Bronze construction.
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| Weight | 2 lbs |
|---|---|
| Series | 740 |
| Inlet Size | 1/2" |
| Outlet Size | 3/4" |
| Connection | NPT Male x Female |
| Seat Material | Viton (FKM) |
| Cap Type | Lift Lever |
| Service / Certification | ASME VIII Air/Gas |
| Options | None |
| Body Material | Brass/Bronze |
| Media | Air/Gas |
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About the Aquatrol 740 Series
The Aquatrol 740 Series is the industry-standard ASME Section VIII pressure relief valve family covering 740 (general air/gas), 741 (stainless air/gas), 742 (stainless steam), and 743 (stainless liquid) variants. The 740 platform is engineered for compressors, air receivers, pressure vessels, and process equipment requiring full ASME UV certification and National Board registration.
Common Applications
- Air receivers and compressed air systems
- Boiler and pressure vessel installations
- Process equipment requiring ASME Section VIII compliance
- Gas and liquid storage tanks
- Steam jackets and process heat exchangers (specify 742 for steam)
Materials & Construction
Brass / bronze body standard. Multiple seat options including metal, PTFE, Buna-N, and Viton. Sizes from 1/2" to 3" NPT, with BSPT and flanged options on larger configurations.
Code Certifications
ASME UV stamp (Section VIII Division 1), National Board registered. CRN registered for Canadian provinces. CE marked variants available for European installations.
Buying From an Authorized Distributor
Safety Control Valves is an authorized Aquatrol distributor. Every valve we ship carries the full Aquatrol manufacturer warranty with traceable serial numbers — required for code installations and compliance audits. We sell at factory-direct pricing.
Need Help Sizing or Specifying?
If you have your application data (set pressure, service fluid, capacity, connection size, temperature), we will spec the right model and quote within 24 hours. Request a quote or use our Valve Finder to configure online.