Henry Valve Co, 5342-3/4, Straight Thru Relief Valve, 150 PSI, CAP 18.5 lbs. APM3 4" MPT x 3 4" FPT This Henry Valve Co Straight Thru Relief Valve is designed for applications up to 150 PSI. Its 5342 3 4 model provides a straight through flow path for efficient pressure relief. With a capacity of 18. 5 lbs, it helps maintain safe and consistent pressure levels in your system. Product may exhibit signs of cosmetic damage from long term storage *