Wilkins 1/2" P1550 MNPT x FNPT Pressure Relief Valve (125 PSI) (Lead Free)

The P1550XL Pressure Relief Valve protects cold water lines from excessive pressure buildup. Designed for pressure-only relief, it features 75 or 125 PSI settings, NPT connections, a low-lead bronze body, and corrosion-resistant stainless steel internals. Ideal for thermal expansion, pump relief, passive solar, and commercial or industrial applications.