Description: The PULSAR4HP is a trapped pressure unloader valve designed for hot or cold water pressure washing equipment. A reliable design enables reduced pressure loss, easier trigger gun operation, and easy maintenance. On top of that, the PULSAR4HP is rated for continuous use at water temperatures up to 140°F, and short periods up to 190°F. Dimensions: 6.79" x 3.25" x 1.97". Maximum PSI: 4500. Maximum GPM: 10.5. Inlet (2) Size: 3/8" NPTF. Outlet Size: 3/8" NPTF. Bypass (2) Size: 3/8" NPTF.