maintaining tight tolerances within the head mechanism of steam and hot water systems

providing a high-integrity seal between the valve stem and the bonnet

this adapter is fully compatible with copper

This is a momentary on switch (OFF/MOM-ON)

York S1-2940-3571 Sequencer maintaining tight tolerances within theThe York S1 2940 3571 Sequencer is a critical component for managing the staging of electric heating elements and blower motors in residential air handlers and furnaces. As an authentic Source 1 replacement part, this electric heat sequencer ensures proper timing intervals, preventing simultaneous high amperage draws that could lead to circuit breaker trips. The York S1 2940 3571 utilizes a thermal element to trigger internal switches, typically