Pressure Switch Valve 12-00309-04 for Carrier Supra 1950MT 1850MT 1850 1800

Pressure Switch Valve for Carrier Supra

This pressure switch valve (OEM cross-reference 12-00309-04) controls refrigerant pressure in Carrier Supra transport refrigeration units to ensure efficient cooling operation.

Overview

The pressure switch valve 12-00309-04 is a safety and control device that regulates refrigerant pressure within Carrier Supra refrigeration systems. It protects the compressor from excessive pressure and cycles the system on and off as needed. This pressure switch valve is a direct replacement for worn units in Supra 1950MT, 1850MT, 1850, and 1800 models.

Built For Performance

• Calibrated switch points for accurate pressure cut-in and cut-out
• Corrosion-resistant materials for long life in outdoor environments
• Sealed electrical contacts prevent moisture ingress
• Easy installation with standard threaded port and spade terminals
• Factory-tested to meet OEM pressure specifications

Fits These Machines

• for Carrier Supra 1950MT
• for Carrier Supra 1850MT
• for Carrier Supra 1850
• for Carrier Supra 1800

On-The-Job Use

• Transport refrigeration units on trucks and trailers
• Maintaining proper evaporator and condenser pressures
• Preventing compressor damage from high or low pressure
• Seasonal servicing of reefer units

Specs At A Glance

Good To Know

Q: Can this pressure switch valve be used on any Carrier refrigeration unit? A: This valve is specifically designed for Carrier Supra models 1950MT, 1850MT, 1850, and 1800; other models may require a different part.

Q: What happens if the pressure switch valve fails? A: A faulty switch can cause the compressor to run continuously or fail to start, leading to temperature control issues or potential compressor damage.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.