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This OEM pressure switch is built to withstand the cycling demands of commercial and residential hydronic systems
Its close differential profile allows it to react to minute changes in static or velocity pressure
The sensor's rugged construction facilitates reliable performance in both air-side and water-side applications
this pneumatic humidistat cover provides the required protection and visibility for proportional humidity control in one- or two-pipe installations
Precision Regulation: Specialized rubber seat poppet ensures accurate outlet pressure even at low flow rates or pilot conditions
Johnson Controls D-251-6003 Diaphragm 30067439-890 This OEM pressure switch isThe Johnson Controls D 251 6003 is a high performance replacement diaphragm specifically engineered for pneumatic actuator maintenance and repair. As a genuine Number 4 actuator part, this single piece diaphragm ensures a positive seal and consistent pressure response in critical HVAC and industrial machinery control systems. Designed for field service by veteran technicians, the D 251 6003 provides the necessary flexibility to regulate fluid or gas