ZJP Roots vacuum pump with bypass valve

The ZJP type Roots vacuum pump with bypass valve is a derivative product of the ZJ type Roots vacuum pump. The pumping principle is the same as that of the ZJ type pump. It also uses a pair of 8-shaped rotors to maintain a certain gap in the pump casing and rotate in the opposite direction at a constant speed to produce suction and exhaust effects. The difference is that the intake and exhaust ports of the ZJP type Roots vacuum pump with a bypass valve are connected, and a gravity valve is vertically installed on the channel between the two. Its function is that when the product of the pressure difference between the intake and exhaust ports and the effective operating area of the valve exceeds the self weight of the valve head, the valve head will automatically open. This value is the high pressure difference for the reliable operation of the pump, therefore, this valve is actually an overload automatic protection valve, which is also the advantage of ZJP type Roots vacuum pump with bypass valve.