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

While the control circuit runs on 24VAC

For contractors performing routine maintenance or emergency repairs

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

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

Conbraco 38-003-01 Repair Kit 328140-751 The KMC Controls HPO-0038 DiaphragmThe 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