and the necessary chain for operation

This 1720 series safety valve (TS11J model) features a 7/16-inch tube inlet and outlet and includes a high-performance valve magnet assembly

though settings should always be verified against specific system requirements

including fireplaces

meaning it will actuate and hold position even at 0 PSI

Trane MOD1301 Actuator Els PW 29614 and the necessary chain forThe Trane MOD1301 Actuator is a direct OEM foot mount actuator designed for high precision HVAC damper control. This 2 10VDC modulated unit operates as an electrical to mechanical transducer, translating low voltage signals into accurate positioning for dampers or valves in residential and commercial air handlers. A key field feature is the spring return mechanism (S R), which ensures a fail safe position during a total power loss, protecting the coil