Always verify your specific model number against the OEM parts list to ensure a proper fit

The KMC Controls HPO-0038 Diaphragm is a precise OEM replacement part engineered for the MCP-3631 series rotary pneumatic damper actuators

Common Technical Questions: What is the difference between Watts 0382589 and 740-1-40

the 302-084 is a mechanical rebuild kit for the wetted internal parts

or a lack of response to 120V power signals despite a healthy control board

Conbraco 38-003-01 Repair Kit 328140-751 Always verify your specific modelThe Conbraco 38 003 01 Repair Kit is a professional grade solution for the maintenance and overhaul of 38 100 series atmospheric vacuum breakers. Engineered specifically for 1 4", 3 8", and 1 2" NPT valves, this major repair kit enables technicians to restore critical backflow prevention functionality without replacing the entire bronze body. The kit includes a high performance silicone seat disc, float assembly, and necessary gaskets, ensuring a