1 Pc T&P Relief Valve 3/4″ NPT 150 PSI
$163.25 on Amazon.com (as of October 17, 2026, 2:15 PM EST) View details ↗
Keep your residential or commercial water heater operating safely with our 1‑piece Temperature & Pressure (T&P) Relief Valve. Designed to precisely manage both temperature and pressure thresholds, this valve protects your tank from over‑pressure and overheating, ensuring reliable performance and peace of mind.
Factory‑calibrated to a 150 PSI set point, the valve features a high‑performance thermal probe that monitors heat levels in real time. When the pressure or temperature exceeds safe limits, the valve opens to release excess pressure, preventing tank rupture or fire hazards. Constructed from lead‑free brass, the unit delivers a rugged shield that withstands high‑thermal stress while maintaining consistent operation over the life of your heating system.
The valve’s 3/4″ NPT threads on both inlet and outlet provide a secure, leak‑free fit with standard water heater ports and discharge lines. Precision‑machined internal circular gaskets and a heavy‑duty spring ensure a stable seal until the safety threshold is reached, keeping your water supply clean and protected.
| Pressure Rating | 150 PSI |
|---|---|
| Thread Size | 3/4″ NPT (inlet & outlet) |






