Aquatrol Series 743 ASME Section VIII safety relief valve for liquid service. 3/4″ inlet x 1″ outlet, NPT Male x Female connections, ptfe seat, closed cap. Full 316 Stainless Steel construction. Options: API Seating. Manufactured by Aquatrol. American-made.
Aquatrol 743 Safety Relief Valve — 3/4″ x 1″ NPT, PTFE Seat, ASME VIII Liquid
$1,256.47
Ships in 10-14 DaysAquatrol Series 743 ASME Section VIII safety relief valve for liquid service. 3/4″ inlet x 1″ outlet, NPT Male x Female connections, ptfe seat, closed cap. Full 316 Stainless Steel construction.
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| Weight | 2 lbs |
|---|---|
| Series | 743 |
| Inlet Size | 3/4" |
| Outlet Size | 1" |
| Connection | NPT Male x Female |
| Seat Material | PTFE |
| Cap Type | Closed Cap |
| Service / Certification | ASME VIII Liquid |
| Options | API Seating |
| Body Material | Full 316 Stainless Steel |
| Media | Liquid |
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About the Aquatrol 743 Stainless Steel Series
The Aquatrol 743 is the stainless steel pressure relief valve in the Aquatrol catalog engineered specifically for liquid service. Stainless construction is required for corrosive media, sanitary and pharmaceutical applications, food-grade processing, and high-temperature environments where bronze cannot be used.
Common Applications
- Sanitary and pharmaceutical processing
- Food-grade and beverage industry applications
- Corrosive gas, steam, or liquid service
- High-temperature process equipment
- Cleanroom and ultra-pure media systems
Materials & Construction
316 stainless steel body and trim. Seat material varies by service: PTFE or metal for liquid. The stainless construction is suitable for corrosive media that would degrade bronze, and for cleanable applications requiring sanitary finish.
Code Certifications
ASME UV stamp (Section VIII Division 1), National Board registered. The 743 is also available in a non-coded variant for non-pressure-vessel applications.
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.