UNLOADER, VR56, 3625PSI, 3/8" NPTM W/ KNOB Hotsy Pacific Sale! from $98.50 Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Basic valve, premium performance. Temperature: 194°F Forged-Brass Body Stainless-Steel Seat and Piston 3/8" MPT Inlet, Outlet & 3/8 FPT Bypass PSI: 3625 Max PSI: 3400 PSI GPM: 8.0 Weight: 15 oz.