Lochinvar & A.O. Smith 100189387 Valve 320720-756 the internal diaphragm or SPST

the internal diaphragm or SPST contacts have likely failed

By strictly adhering to centrifugal chiller preventative maintenance schedules with this kit

Versatile Media Handling: Internal elastomers and construction are compatible with neutral gases

preventing premature sensor failure and ensuring the standing pilot remains stable under varying gas pressures

Attempting to use this on an R-410A system will result in improper refrigerant flow and likely system failure due to the different pressure requirements of the refrigerants

Lochinvar & A.O. Smith 100189387 Valve 320720-756 the internal diaphragm or SPSTThe Lochinvar & A. O. Smith 100189387 Valve is a Liquid Propane (LP) gas valve assembly designed specifically for high efficiency heating applications, including the Lochinvar Copper Fin II and FTX 725 series. As a critical component in the gas valve kit, this assembly utilizes a negative pressure regulation system to ensure precise fuel to air ratios throughout the firing cycle. For technicians troubleshooting ignition failure or flame failure codes