Johnson Controls V-3801-8001 Actuator Els PW 17895 this unit utilizes an externally

this unit utilizes an externally equalized 1/4 inch flare port to compensate for pressure drops across the evaporator

and the 42S Series pump controllers

While it provides the mounting point

the circuit opens to shut down the burners

Johnson Controls V-3801-8001 Actuator Els PW 17895 this unit utilizes an externallyThe Johnson Controls V 3801 8001 Actuator is a professional grade pneumatic valve actuator designed specifically for low pressure steam and water applications where mounting space is at a premium. Featuring a compact, oval top design, this unit is the standard choice for VG7000 Series 1 2 inch and 3 4 inch bronze valves. The die cast aluminum housing protects a high quality rolling diaphragm, which ensures a constant 4 square inch effective area