Johnson Controls STT18A-601R Repair Kit 30067439-890 System Reliability: Manual reset functionality

System Reliability: Manual reset functionality prevents rapid cycling and ensures a diagnostic check occurs before system reactivation

This HVACR pressure control is an essential component for technicians looking to improve system efficiency and ensure stable refrigerant pressures in fluctuating environments

Engineering specs include a 9/16-inch straight thread connection ("large thread" style) and a maximum operating pressure of 250 PSI

this cartridge ensures consistent instrument air quality by preventing oil aerosols and particulates from downstream migration

Johnson Controls STT18A-601R Repair Kit 30067439-890 System Reliability: Manual reset functionalityThe Johnson Controls STT18A 601R Seat Repair Kit is a critical maintenance component designed for the STT series temperature actuators and control valves. This OEM valve rebuild kit provides the necessary internals to restore factory spec seating and prevent bypass leakage in commercial HVAC hydronic systems. By replacing the valve seat assembly, technicians can maintain precise flow modulation without the cost of a full valve body replacement. This