York S1-129201 Expansion Valve 319848-301 Smith 100111059 Gas Valve is

Smith 100111059 Gas Valve is a critical replacement component engineered for precision fuel regulation in high-efficiency commercial water heaters

or visible debris buildup on the blades which can cause motor overheating and reduced airflow

mitigating the risk of component fatigue or safety failures

this valve is specifically designed for intermittent pilot ignition systems and should be used with compatible control modules like the S8600 series

Ensure the strainer is cleaned during annual maintenance to prevent the proportional valve from sticking open

York S1-129201 Expansion Valve 319848-301 Smith 100111059 Gas Valve isThe York S1 129201 Expansion Valve is a critical precision metering device designed for high efficiency refrigerant flow control in residential and light commercial HVAC systems. This thermostatic expansion valve (TXV) utilizes a 1 2" inlet, 7 8" outlet, and 1 4" external equalizer connection to maintain optimal superheat across the evaporator coil, preventing liquid slugging and protecting the compressor. Featuring a 5 foot long capillary tube and a