this ASME Section IV certified valve is designed for the protection of hot water heating boilers and similar pressurized equipment

reducing fuel consumption compared to standing pilot systems

Key Benefits for Technicians: Broad Media Compatibility: Optimized for air

Engineers designed this motor with Class B insulation and thermal overload protection to handle high ambient temperatures common in outdoor condensing units

Verify the actual vacuum with a manometer to isolate the failure

Johnson Controls D-4070-6 Damper Actuator Els PW 17895 this ASME Section IV certifiedJohnson Controls D 4070 6 Pneumatic Damper Actuator, 2 Stage, 2 3 4" Stroke, 3 6 Psi and 11 14 Psi Spring Range, Includes Auxiliary Mounting Bracket, 0 20 Psig Maximum Air Control Pressure, 1 8" NPT Straight Barbed Fitting Air Connection