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Renewable Design for Normally Closed Oil Pressure Switch - Auto Air Conditioning Refrigeration Pressure Switch – Anxin

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Renewable Design for Normally Closed Oil Pressure Switch - Auto Air Conditioning Refrigeration Pressure Switch – Anxin Detail:

Product name 4 pin high low A/C trinary pressure switch for air conditioner Refrigerant 
Thread 1/8,  3/8
Common parameters HP:3.14Mpa  OFF; MP:1.52Mpa  ON; LP:0.196Mpa  OFF
Applicable medium R134a, Air conditioning refrigerant

1-china automatic air conditioning pressure switch
4-30-91
3-R134a car air conditioning pressure switch
4-30-97

Generally, pressure switches are installed in automobile air-conditioning refrigeration systems.Pressure protection switches include high pressure pressure switch, low pressure pressure switch, high and low pressure combination switch and three-state pressure switch.At present, it is commonly used as a combination pressure switch. The working principle of the three-state pressure switch is introduced below.

The pressure switch is installed on the high-pressure side of the air-conditioning system.When the refrigerant pressure is ≤0.196MPa, since the elastic force of the diaphragm, the butterfly spring and the upper spring is greater than the pressure of the refrigerant, the high and low pressure contacts are disconnected (OFF), the compressor stops, and low pressure protection is realized.

When the refrigerant pressure reaches 0.2MPa or more, this pressure is higher than the spring pressure of the switch, the spring will bend, the high and low pressure contacts are turned on (ON), and the compressor operates normally.

When the refrigerant pressure reaches 3.14MPa or more, it will be greater than the elastic force of the diaphragm and the disc spring. The disc spring reverses to disconnect the high and low pressure contacts and the compressor stops to achieve high pressure protection.

There is also a commonly used medium pressure switch.When the refrigerant pressure is greater than 1.77MPa, the pressure is greater than the elastic force of the diaphragm, the diaphragm will reverse, and the shaft will be pushed up to connect the speed conversion contact of the condenser fan (or radiator fan), and the fan will run at high speed to achieve pressure protection.When the pressure drops to 1.37MPa, the diaphragm returns to its original shape, the shaft drops, the contact is disconnected, and the condensing fan runs at a low speed.


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Renewable Design for Normally Closed Oil Pressure Switch - Auto Air Conditioning Refrigeration Pressure Switch – Anxin detail pictures

Renewable Design for Normally Closed Oil Pressure Switch - Auto Air Conditioning Refrigeration Pressure Switch – Anxin detail pictures

Renewable Design for Normally Closed Oil Pressure Switch - Auto Air Conditioning Refrigeration Pressure Switch – Anxin detail pictures

Renewable Design for Normally Closed Oil Pressure Switch - Auto Air Conditioning Refrigeration Pressure Switch – Anxin detail pictures

Renewable Design for Normally Closed Oil Pressure Switch - Auto Air Conditioning Refrigeration Pressure Switch – Anxin detail pictures


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Sticking to the perception of "Creating products of top of the range and earning mates with people today from all over the world", we constantly put the desire of consumers in the first place for Renewable Design for Normally Closed Oil Pressure Switch - Auto Air Conditioning Refrigeration Pressure Switch – Anxin , The product will supply to all over the world, such as: Borussia Dortmund, Czech republic, Poland, "Create Values,Serving Customer!" is the aim we pursue. We sincerely hope that all customers will establish long term and mutually beneficial cooperation with us.If you wish to get more details about our company, You should contact with us now!
  • We have been engaged in this industry for many years, we appreciate the work attitude and production capacity of the company, this is a reputable and professional manufacturer.
    5 Stars By Lorraine from Buenos Aires - 2018.11.11 19:52
    The goods are very perfect and the company sales manager is warmful, we will come to this company to purchase next time.
    5 Stars By Grace from Spain - 2018.06.30 17:29
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