Description: Part # 100824 is a brass chemical injector with adjustable hose barb for pressure washing equipment. The chemical injector provides an up to 10% downstream chemical draw, and a flow rate of 2.0-3.0 GPM up to 4250 PSI. May be used with both hot water and cold water pressure washing equipment. Maximum PSI: 4250. Maximum GPM: 3. Inlet Port Size: 3/8" NPT-M. Outlet Port Size: 3/8" NPT-M. Hose Barb Size: 1/4", adjustable. Maximum Temperature: 190°F.