command relay

including standard residential and commercial air conditioning setups

It is designed strictly for closed-loop hydronic heating

Does this part replace the 42-21268-94 or 42-21554-07

snap-acting contacts to ensure long-term reliability in mechanical rooms

Sensus 143-IRV-1 1/4 Regulator Els PW 17895 command relayThe Sensus 143 80 2 Internal Relief Valve (IRV) Regulator is a specialized solution for residential and light commercial natural gas applications requiring precise pressure control. This model features a 1 1 4" NPT pipe size and a high performance 3 8" orifice, engineered to handle significant flow capacities while maintaining a stable outlet pressure. Equipped with a Green Spring, the unit is calibrated for an adjustable outlet range of 6 to 14