Comet Pump RWS 9518 S, 9.3 GPM 2200 PSI, Belt Drive Pump 13.5hp by | Jul 22, 2026RWS (Premium) – Ø 24 mm. Hardened Stainless Steel Piston Guides Highly Efficient Stainless Steel Check Valves. Highly Quality Tapered Roller Bearings. 24mm Solid Shaft for Belt Drive, Gearbox or Flex Couplers.