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Mini pressure switch

YK Vacuum pressure switch

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YK Series Vacuum Pressure Control

 Product Specification

Adopting Eng. thread quick connector (copper flare connection) or brass tube welding fitting structure,

flexibly setting, easy to use and no special need for mounting and fixing .

Plugging or wiring connection designed to customers’ choice.

SPST connection, normal open or normal close structure to customers’ choice.

Security and reliability by adopting fusion welding stainless steel pressure inductor and full air-tight connection.

The minimum vacuum pressure can be 15in.Hg

Any pressure value within 15in.Hg~8PSI (-0.1~0.05MPa) can be made based on customers' requirement.

Pre-set pressure parameter before delivery allows direct use without resetting on the customers’ site.

 Outline Drawing

 Operation Principle

The series of pressure control are made based on the theory that an inside reversible stainless steel motion diaphragm turns over when inducing certain pressure. The electric contact opens or closes with the leader when the diaphragm moves. The switch resets automatically when induced pressure reduces below rated value.


These pressure controllor are used to protect the low pressure system of the refrigeration equipment which pressure is negative.(under normal atmospheric pressure). It can also be used for control of pneumatic, hydraulic, lubricating oil system.

 Parameter Data

◆ Working pressure range: 15in.Hg~8PSI-0.1~0.05MPa

◆ Burst Pressure: 2500PSI

◆ Ambient temperature: -30~+80

◆ System medium temperature: -50~+120

◆ Life cycles under the rated electric current: 30,000 times, 50,000 times and 100,000 times optional

◆ Electrical Rating: At 24Vac, normal electric capacity: 125VA At 120/240Vac, normal electric capacity: 375VA

◆ Dielectric Strength: Between disconnected contacts: AC700V/S Terminal to outer shell: AC2000V/S

◆ Safety proof pressure: The pressure that the control can endure while not affects the rated motion value

 Contact Form