Johnson Controls P70LA-42 Pressure Control
The Johnson Controls P70LA-42 is a robust dual pressure control designed for heavy-duty commercial refrigeration and HVAC compressor management. This SPST pressure switch combines high-side and low-side monitoring into a single, compact unit, featuring an automatic reset mechanism for both functions. Built with an all-steel NEMA 1 enclosure, this control provides durable protection for internal components in standard mechanical room environments. The low-side range is adjustable from 20 inches Hg to 100 psi, while the high-side handles cut-out setpoints from 100 psi to 450 psi, making it compatible with most standard high-pressure refrigerants. This model is engineered for reliability, utilizing a sight-set calibrated scale for visible setpoint verification and a single-pole single-throw contact configuration to facilitate direct compressor or alarm circuit integration without the need for complex external wiring.
Key Benefits- Dual-Function Monitoring: Consolidates high-pressure safety and low-pressure operating control into one device to simplify system layout.
- Rugged Construction: The steel NEMA 1 enclosure ensures longevity in demanding commercial and industrial applications.
- Automatic Reset: Eliminates the need for manual intervention after temporary pressure fluctuations, ensuring consistent system uptime.
- Calibration Precision: Features a sight-set scale for accurate field adjustments and verification of cut-in and cut-out points.
- Refrigerant Compatibility: Designed for use with all non-corrosive refrigerants commonly found in commercial cooling systems.
Is the high-side differential adjustable on the P70LA-42?
No, the high-side differential is typically fixed at approximately 65 psi on this model, while the low-side differential remains adjustable to accommodate specific pump-down requirements.
Can this control be used with ammonia systems?
The P70LA-42 is intended for non-corrosive refrigerants. For ammonia applications, a specific ammonia-compatible model with stainless steel bellows must be used.
Does this model include an external adjustment knob?
No, this specific version features a plain NEMA 1 enclosure with no adjustment knob to prevent unauthorized tampering with the pressure setpoints.
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: $245.02
-65%$245.02
$85.76Product Information
Product Information
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Description
The Johnson Controls P70LA-42 is a robust dual pressure control designed for heavy-duty commercial refrigeration and HVAC compressor management. This SPST pressure switch combines high-side and low-side monitoring into a single, compact unit, featuring an automatic reset mechanism for both functions. Built with an all-steel NEMA 1 enclosure, this control provides durable protection for internal components in standard mechanical room environments. The low-side range is adjustable from 20 inches Hg to 100 psi, while the high-side handles cut-out setpoints from 100 psi to 450 psi, making it compatible with most standard high-pressure refrigerants. This model is engineered for reliability, utilizing a sight-set calibrated scale for visible setpoint verification and a single-pole single-throw contact configuration to facilitate direct compressor or alarm circuit integration without the need for complex external wiring.
Key Benefits- Dual-Function Monitoring: Consolidates high-pressure safety and low-pressure operating control into one device to simplify system layout.
- Rugged Construction: The steel NEMA 1 enclosure ensures longevity in demanding commercial and industrial applications.
- Automatic Reset: Eliminates the need for manual intervention after temporary pressure fluctuations, ensuring consistent system uptime.
- Calibration Precision: Features a sight-set scale for accurate field adjustments and verification of cut-in and cut-out points.
- Refrigerant Compatibility: Designed for use with all non-corrosive refrigerants commonly found in commercial cooling systems.
Is the high-side differential adjustable on the P70LA-42?
No, the high-side differential is typically fixed at approximately 65 psi on this model, while the low-side differential remains adjustable to accommodate specific pump-down requirements.
Can this control be used with ammonia systems?
The P70LA-42 is intended for non-corrosive refrigerants. For ammonia applications, a specific ammonia-compatible model with stainless steel bellows must be used.
Does this model include an external adjustment knob?
No, this specific version features a plain NEMA 1 enclosure with no adjustment knob to prevent unauthorized tampering with the pressure setpoints.
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.
