The UE J21K differential pressure switch maintains the difference between two system pressures or vacuums, senses excessive flow deviation, or verifies that a filter is clogged. It is designed with two separate opposing sensors that are connected by a rod to actuate the snap switch.

J21K's rugged design, with epoxy coated enclosure and sealed metal bellows, lends itself to exacting applications. Widely used in chiller and compressor applications, the J21K can be used for filter status monitoring and proof of flow.

• Adjustable Ranges Within 30" HgVacD to 90 PSID
• Single SPDT Switch Output
• UL Listed and CSA Certified
• Welded 316 Stainless Steel Sensors
• Repeatability ±1% Adjustable Range

 

Type	Description	Size
	Catalogue Section: Pressure and Temperature Switches	1.6MB
	United Electric Switches Application Datasheet Faxback Form	16KB
	United Electric's Guide to Choosing a Mechanical Switch	136KB
	United Electric J21K NEMA 4X General Service Differential Pressure Switch Specifications	376KB
	United Electric J21K NEMA 4X Differential Pressure Switch Installation and Maintenance Guide	211KB