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Johnson Controls P28DP-9340 oil differential pressure pressure controller
These pressure controls are designed for use in a variety of applications involving refrigeration high or low pressure.
Models supplied have a “whole range” design, enabling them to be used with refrigerants R22, R134A, R404A, R410A and all other non-corrosive refrigerants which are within the operating range of the control.
They may also be used for other high or low pressure applications such as air, water etc.