Use this nozzle selection guide and choose your orifice size based on the flow (gpm) and pressure (psi) of your washer

Good resistance to acids including hydrochloric acid

Electric start option available

The 2-1/4"castor is comes with a mounting bracket and fits the FL-CR 520 model

ST-1500 Spec Sheet

Comet LWS3525S HM 24mm Solid Shaft 1750rpm 2500psi 3.5gpm 6301.1203.00 features_4-to-10-inch-pipe Use this nozzle selection guide6301120300 Comet LWS3525S HM 24mm Solid Shaft 1750rpm 2500psi 3. 5gpm Product Specs: Shaft Size (Diameter): 24mm Shaft Style: Solid Shaft RPMs: 1750 Inlet Connection: 1 2" FBSP Outlet Connection: 3 8" FBSP Pump Head: Brass or Stainless Steel Oil Capacity: 11 fl oz Weight: 13. 4 lbs Max Temperature: 140 F Warranty: 5 Years Features: Forged Bronze Connecting Rods Hardened Stainless Steel Piston Guides High Efficiency Stainless Steel Check Valves