When the system pressure is above the rated securiry pressure,the pressure induction disk within the sensor moves instantaneously,the security disk through a guide rod is driven to the lock location,while the security disk pushes the switch touch point disconnect through the connected guide rod .
When the pressure drops to the rated security pressure below,the induction disk is automatically reset,while as the security disk has been at the lock location and can’t be automatically reset,the switch touch point can’t be connected,and the systen can return to the normal working condition only by pressing the external button and forcing to push the security disk lock to the switch touch point into the connected state.
YK series switches are used to all air conditioning and refrigeration systems that require special pressure protection and brad ranger of extra-high pressure protection for the pressure systems of variety of tools and equipments .They can be directly installed on the pipeline or on the control panel based on the equipment situation .
1)By using screw quick coupling or copper tube ,and capillary tube welded connection structure,the products are easy and convenient to meet the carried needs for different users
2)The housing is installed bu plate-loading(with installing ear) or thread(without additional fixing and installing mode),optional for users at will.
3)The stainless steel sensor with sealed double security disk can ensure that the system is not misact to the switch affected by unexpected sensor failure, which would lead to start the machine and damage the machine.thus ,the products are paticularly safe and reliable.
4)Independent automatic disconnection and manual reset double-structure design greatly increases the security and reliability of pressure protection
Setting range of pressure value
Erection joint method
Screw or copper pipe.Could be customized
Tolerance range of pressure switch
Normal close or Normal open
Maximum burst pressure
No burst phenomenon in 1min at ≤5000PSI(34.5MPA)blast pressure
No break down or flashing in 1min at AC1500V/50HZ/min