Johnson Controls V-3100-611 Replacement Diaphragm The Johnson Controls T-4000-3139 is

The Johnson Controls T-4000-3139 is a professional-grade horizontal pneumatic thermostat cover designed specifically for the T-4000 Series room thermostats

including the Weil McLain SlimFit

The 8402-070 is rated for 160°F

014-inch orifice size and is specifically engineered for 3/16" tube connections

These fittings are primarily designed for HVACR and hydraulic use

Johnson Controls V-3100-611 Replacement Diaphragm The Johnson Controls T-4000-3139 isFor field technicians maintaining legacy pneumatic systems, the Johnson Controls V 3100 611 is the definitive replacement diaphragm for the V 3802 Pneumatic Oval Top Actuator. This synthetic elastomer component is engineered to restore the actuator performance and sealing integrity of V 3800 series units and VT series valves. Designed for high temperature applications, it withstands media temperatures up to 281F and a maximum control pressure of 30