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the 153825 is the head mechanism only
reducing maintenance intervals and system downtime
you should look for the corresponding 143-82 series springs
The unit operates on a 24V AC ignition control circuit
When installing the 100109841 gas valve
York S1-029-19387-003 Orifice 320734-701 the 153825 is the headThe York S1 029 19387 003 Orifice is a precision engineered . 061 refrigerant metering device designed to regulate the flow of refrigerant within York HVAC systems. As an OEM replacement part, it ensures the exact pressure drop required for optimal thermal exchange, preventing liquid slugging and maintaining system efficiency. This specifically sized 0. 061 inch diameter orifice is common in residential split systems and microchannel air conditioner