Ross 504K87 Service Kit

Ross 504K87 is a Valve Body Service Kit for Ross Controls 27 Series inline poppet valves. It is used to service or recondition the valve body when wear or leakage affects performance in the 27 Series family. In official installation documentation for the 27 Series, 504K87 is listed as the valve body service kit number, with 513K87 occurring alongside it as a related gasket kit. For maintenance workflows involving single-solenoid pilots, Ross also references kit 946K87 as a related service option. Retail catalogs identify the 504K87 kit as compatible with 3/8 base configurations and the 27 Series when selecting the appropriate valve body service solution. This kit should be ordered to refresh a valve body during scheduled maintenance or when diagnostics indicate internal wear, and should be used in accordance with Ross installation instructions to ensure proper reassembly and continued reliability of the valve system.