Brand: ZOER
Model: ZRS-283T 3/8
Product inroduction:
 
By-pass valve will work while the refrigerant is flowing according to the arrow on the ZRX suction line filter drier. If there is too much pressure drop, the pass-by valve will open a little to keep the enough curent and will make the compressor motor get the proper cooling.
 
The pass-by valve will not work if make the wrong installaiton of the suction line filter drier. It will not open even the pressure drop is very high. In this situation, it will need an access valve to check the pressure drop that pass by the core to the compressor suction valve. If the pass-by valve on the suction line filter drier is not working. we can use access valve to check the pressure.