Bertolini 23.9891.973 Pump Valve Kit DP 139 DP 185 Rebuild Check Valves O-Rings - NIB

Idromeccanica Bertolini is a premium Italian manufacturer specializing in heavy-duty high-pressure agricultural spray pumps and commercial pressure washer components. This kit includes a complete set of internal spring-loaded check valves and matching rubber sealing O-rings. When agricultural sprayers or industrial pressure pumps lose pressure or pulsate unevenly, maintenance teams use this kit to replace the internal worn-out check valves to restore peak operational pressure.