Watts 0887185 Rubber Parts Kit R-410A suggesting either a mechanical switch

suggesting either a mechanical switch failure or an actual lack of static pressure in the ductwork

and 76727600

Simplified Wiring: Equipped with standard 1/4" tab terminals to reduce service time during 120VAC field installation

or black iron pipe

This is an electronic demand board specifically designed to replace the CNT4362

Watts 0887185 Rubber Parts Kit R-410A suggesting either a mechanical switchThe Watts 0887185 (RK 009 RT 1 1 4 2) is a comprehensive rubber parts kit engineered for the field service and maintenance of 1 1 4" to 2" Watts 009 Series Reduced Pressure Zone (RPZ) assemblies. Designed for high performance backflow prevention, this 009 RT RK repair kit includes all necessary elastomeric components to restore the seal integrity of both the first and second check valves, as well as the relief valve assembly. This kit is a direct