United Electric J21K-232 Pressure Switch
The United Electric J21K-232 Pressure Switch is an industrial-grade differential pressure switch engineered for precise monitoring in HVAC filtration, pumping systems, and compressor protection. Built with dual phosphor bronze bellows, this unit maintains superior setpoint repeatability of ±1% by sensing the delta between high and low-pressure ports via opposing sensors. This mechanical balance ensures a rapid snap-action response, making it highly effective for clogged filter detection and flow verification in chiller applications. The device features an adjustable range of 0-25 PSID and is housed in a rugged, epoxy-coated diecast aluminum enclosure that meets NEMA 4X standards for water and dust resistance.
For contractors replacing legacy components, the J21K-232 is the direct equivalent to the J21K-232-9559 factory stock number, offering a seamless fit for existing 1/4 inch NPTF connections. The SPDT switch configuration, rated at 15A @ 125/250/480 VAC, allows for flexible wiring into control circuits, while the internal hex screw facilitates field adjustments without compromising the gasketed seal. With a proof pressure of 25 PSI and a standard deadband of 0.6 to 1 PSI, this switch is a reliable workhorse for building automation systems and demanding industrial process environments.
Key Benefits- Enhanced Durability: Dual phosphor bronze bellows provide long-term stability in liquid and gas applications.
- Field Reliability: NEMA 4X rated enclosure protects against corrosion and moisture in outdoor or washdown environments.
- Precision Control: High setpoint repeatability ensures consistent HVAC monitoring and system safety.
- Simplified Integration: Standard SPDT output and 7/8 inch conduit hole accommodate universal wiring standards.
- Cross-Compatibility: Fully interchangeable with J21K-232-9559 models for easy facility maintenance.
Is the setpoint adjustable under pressure?
Yes, the J21K-232 features an internal 5/16 inch hex screw that allows for adjustable differential pressure settings from 0 to 25 PSID while installed.
What media is this switch compatible with?
This differential pressure switch is designed for use with non-corrosive liquids and gases, including water, glycol, and inert dry air.
Can I use this for both indoor and outdoor applications?
Absoluteley. The epoxy-coated enclosure and gasketed cover provide the necessary protection for the SPDT contacts in varied environmental conditions.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $483.04
-65%$483.04
$169.06United Electric J21K-232 Pressure Switch
The United Electric J21K-232 Pressure Switch is an industrial-grade differential pressure switch engineered for precise monitoring in HVAC filtration, pumping systems, and compressor protection. Built with dual phosphor bronze bellows, this unit maintains superior setpoint repeatability of ±1% by sensing the delta between high and low-pressure ports via opposing sensors. This mechanical balance ensures a rapid snap-action response, making it highly effective for clogged filter detection and flow verification in chiller applications. The device features an adjustable range of 0-25 PSID and is housed in a rugged, epoxy-coated diecast aluminum enclosure that meets NEMA 4X standards for water and dust resistance.
For contractors replacing legacy components, the J21K-232 is the direct equivalent to the J21K-232-9559 factory stock number, offering a seamless fit for existing 1/4 inch NPTF connections. The SPDT switch configuration, rated at 15A @ 125/250/480 VAC, allows for flexible wiring into control circuits, while the internal hex screw facilitates field adjustments without compromising the gasketed seal. With a proof pressure of 25 PSI and a standard deadband of 0.6 to 1 PSI, this switch is a reliable workhorse for building automation systems and demanding industrial process environments.
Key Benefits- Enhanced Durability: Dual phosphor bronze bellows provide long-term stability in liquid and gas applications.
- Field Reliability: NEMA 4X rated enclosure protects against corrosion and moisture in outdoor or washdown environments.
- Precision Control: High setpoint repeatability ensures consistent HVAC monitoring and system safety.
- Simplified Integration: Standard SPDT output and 7/8 inch conduit hole accommodate universal wiring standards.
- Cross-Compatibility: Fully interchangeable with J21K-232-9559 models for easy facility maintenance.
Is the setpoint adjustable under pressure?
Yes, the J21K-232 features an internal 5/16 inch hex screw that allows for adjustable differential pressure settings from 0 to 25 PSID while installed.
What media is this switch compatible with?
This differential pressure switch is designed for use with non-corrosive liquids and gases, including water, glycol, and inert dry air.
Can I use this for both indoor and outdoor applications?
Absoluteley. The epoxy-coated enclosure and gasketed cover provide the necessary protection for the SPDT contacts in varied environmental conditions.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The United Electric J21K-232 Pressure Switch is an industrial-grade differential pressure switch engineered for precise monitoring in HVAC filtration, pumping systems, and compressor protection. Built with dual phosphor bronze bellows, this unit maintains superior setpoint repeatability of ±1% by sensing the delta between high and low-pressure ports via opposing sensors. This mechanical balance ensures a rapid snap-action response, making it highly effective for clogged filter detection and flow verification in chiller applications. The device features an adjustable range of 0-25 PSID and is housed in a rugged, epoxy-coated diecast aluminum enclosure that meets NEMA 4X standards for water and dust resistance.
For contractors replacing legacy components, the J21K-232 is the direct equivalent to the J21K-232-9559 factory stock number, offering a seamless fit for existing 1/4 inch NPTF connections. The SPDT switch configuration, rated at 15A @ 125/250/480 VAC, allows for flexible wiring into control circuits, while the internal hex screw facilitates field adjustments without compromising the gasketed seal. With a proof pressure of 25 PSI and a standard deadband of 0.6 to 1 PSI, this switch is a reliable workhorse for building automation systems and demanding industrial process environments.
Key Benefits- Enhanced Durability: Dual phosphor bronze bellows provide long-term stability in liquid and gas applications.
- Field Reliability: NEMA 4X rated enclosure protects against corrosion and moisture in outdoor or washdown environments.
- Precision Control: High setpoint repeatability ensures consistent HVAC monitoring and system safety.
- Simplified Integration: Standard SPDT output and 7/8 inch conduit hole accommodate universal wiring standards.
- Cross-Compatibility: Fully interchangeable with J21K-232-9559 models for easy facility maintenance.
Is the setpoint adjustable under pressure?
Yes, the J21K-232 features an internal 5/16 inch hex screw that allows for adjustable differential pressure settings from 0 to 25 PSID while installed.
What media is this switch compatible with?
This differential pressure switch is designed for use with non-corrosive liquids and gases, including water, glycol, and inert dry air.
Can I use this for both indoor and outdoor applications?
Absoluteley. The epoxy-coated enclosure and gasketed cover provide the necessary protection for the SPDT contacts in varied environmental conditions.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
