Prince RD1800 Series High Pressure Relief Valve RD-1875-H: 20 Max GPM, 1500 PSI, 3/4" NPTF Port Size, 1000-2500 PSI Adjustable Range, 1500 PSI Relief,

Prince RD1800 Series High Pressure Relief Valve RD-1875-H: 20 Max GPM, 1500 PSI, 3/4" NPTF Port Size, 1000-2500 PSI Adjustable Range, 1500 PSI Relief,

Prince RD1800 Series High Pressure Relief Valve 20 Max GPM, 1500 PSI, 3/4" NPTF Port Size 1000-2500 PSI Adjustable Range, 1500 PSI Relief The PRINCE valve model RD-1800 is a direct acting ball/spring type pressure relief. The valve is compact and simple in design. This type relief is fast opening and is well suited for pressure spike protection. The performance curves below indicate the low cracking pressure typical to ball/spring reliefs. Please refer to the model RV relief for a system pressure relief. The valve is available with a standard steel seat, model RD-1800S, or with a hardened seat, model RD-1800H. Both models are externally adjustable.Compact, direct-acting ball/spring type pressure relief. Fast opening and well-suited for pressure spike protection. This series features replaceable hardened seat and is externally adjustable. Max PSI: 2500.