There are three kinds of differential pressure switches most commonly used in central air conditioning system:
one is the differential oil pressure switch, which is used to detect whether the oil pressure of the compressor meets the standard. This differential pressure switch is also used on the refrigerant pipeline to detect whether the high and low differential pressure is established.
One is the air differential pressure switch, which is used to detect the blockage of the filter screen of the ventilation pipe, whether the filter screen of the air cabinet needs to be replaced.
Another is the water pressure differential switch, which is used to protect the cooling water flow of the unit, if the water stop flow, send alarm
For the above 3 kinds of differential pressure switch, we all could supply it, if you need any of them, welcome to send email to us: firstname.lastname@example.org
Contact: Mr. Chou
Add: 17 &22, No.2928, Chuan Zhou Highway, Shanghai, 201319, China