promoting long-term reliability of the evaporator coil and condenser match-up

Is this valve bi-directional

or lead to inefficient combustion

this part is the factory-authorized successor to the J38R06890-001

Trust the S1-024-19082-019 sequencer to maintain stable HVAC relay control and protect your equipment from the mechanical stress of simultaneous component activation

Johnson Controls A19ADB-25 Utility Thermostat 30067439-890 promoting long-term reliability of theJohnson Controls A19ADB 25 Utility Thermostat, 120 208 240 Vac, 65 300 Degree Temperature Range, 6' Capillary Length, Open Hi, Remote Bulb, Manual Reset, Screwdriver Setpoint Adjustment A19ADB 25 is identical to A19ADB 25C