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this 5-inch diaphragm is a compatible replacement for both the Honeywell MP516 and MP953 series pneumatic actuators
also identified by part number 5H73593
this auto-reset limit switch features a critical temperature profile with a 130°F opening setpoint and a 100°F closing setpoint
Always replace like-for-like using the S8402-028 to maintain system integrity
in modern HVACR service
Johnson Controls T-4000-2139 Cover this 5-inch diaphragm is aThe Johnson Controls T 4000 2139 is a professional grade horizontal thermostat cover designed specifically for the T 4000 Series pneumatic room thermostats. Engineered for sleek, unobtrusive installation, this beige plastic cover features a clean aluminum faceplate without a thermometer window or setpoint adjustment openings. This configuration is ideal for facilities where unauthorized tampering must be minimized while maintaining a uniform aesthetic