Ross Controls 981K87 E-P Monitor Spool Service Kit

Ross Controls 981K87 E-P Monitor Spool Service Kit is a specialized maintenance package for the electro-pneumatic (E-P) monitor spool used in a 3500 Double Valve configuration. It is designed to support service of the E-P monitor assembly in Ross Controls' double-valve line, including the SERPAR family of monitored valves. The E-P monitor provides periodic cycling to verify that the valve elements, the monitor spool, and the associated switch (SW) are free to move and that the monitoring function operates correctly, ensuring reliable detection of faults in crossflow valve operation. In SERPAR 35 Series E-P monitored double valves, the monitor spool is an integral part of the valve’s safety and diagnostics system, helping confirm correct movement during actuation and enabling safe lockout or fault signaling when discrepancies are detected. The 981K87 kit thus enables technicians to perform routine maintenance on this monitoring system within a 3500 double valve setup, supporting the continued integrity of the spool movement and monitoring circuitry as part of standard preventative maintenance practices.