Potable Water Safety Valves — No-Lead, NSF/ANSI 372
Potable water systems—municipal supply, commercial buildings, residential hot water—must comply with NSF/ANSI 372 and other drinking water standards prohibiting lead and dangerous leachables. Aquatrol’s potable water relief valves are certified no-lead, use FDA-approved materials in all product-contact surfaces, and protect against thermal expansion and overpressure while maintaining water safety.
Potable Water Safety & Compliance
NSF/ANSI 372 certification mandates that relief valves in potable water systems contain no lead and no materials that leach dangerous compounds into drinking water. Aquatrol’s potable water series use certified materials (brass components are lead-free, seals are food-grade rubber, springs are stainless steel) meeting NSF standards. Every valve includes certification documentation.
Thermal expansion relief is essential in sealed water heating systems. When water heats from 60°F to 140°F, pressure can exceed safe limits, damaging piping and fittings. Our relief valves are sized to release excess pressure safely while maintaining system integrity. Quiet operation and minimal discharge prevent water waste and noise complaints.
Building codes require proper overpressure protection—typically a certified relief valve on every hot water heater and closed system. Aquatrol’s potable series meet all code requirements and inspections. Installation is straightforward, and field adjustment of pressure setting is simple with standard tools.
| Series | Pressure Range | Connection | NSF Cert |
|---|---|---|---|
| 570 | 20–500 PSIG | NPT, tri-clamp | NSF 372 |
| 135 | 20–300 PSIG | NPT, flange | NSF 372 |
| 140 | 20–1,000 PSIG | NPT, SAE | NSF 372 |
| 571 | 30–150 PSIG | Compression fitting | NSF 372 |
| 572 | 20–500 PSIG | Sweat (copper) | NSF 372 |
Common Applications
- Residential hot water heater thermal expansion relief
- Commercial building chilled water system relief
- Municipal water supply pressure limiting
- Potable water storage tank overpressure relief
- RO (reverse osmosis) system pressure protection
- Water treatment and purification equipment relief
- Building code-required overpressure protection
Need Help Choosing the Right Valve?
Our valve engineers can help you select the perfect valve for your application.