By replacing a standard piston with this R-22 expansion valve kit

0/50# regulator body

this model is part of the VT series designed for hot and chilled water

designed to move high volumes of air while maintaining optimal static pressure in residential and commercial condensing units

it functions independently of external power

Lochinvar & A.O. Smith 100109294 Pilot Assembly 318518-761 By replacing a standard pistonThe Lochinvar & A. O. Smith 100109294 Pilot Assembly is a precise OEM replacement engineered for Flammable Vapor (FV) ignition systems. Designed for use in Propane (LP) residential water heaters, this 160 Degree Celsius rated assembly ensures critical thermal safety by maintaining the correct ignition sequence and flame rectification. As a high performance FV Pilot Assembly, it integrates a durable thermopile or thermocouple (depending on specific