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Roots Vacuum Pump with Bypass Valve

Min.Order Quantity: 1 Set/Sets Roots Vacuum Pump with Bypass Valve

Supply Ability: 400~700 Set/Sets per Month Roots Vacuum Pump with Bypass Valve

Payment Terms: L/C,T/T,


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 Summary of ZJP Roots Vacuum Pump with Bypass Valve

This machine is a product of ZJ Roots Vacuum Pump. The pumping principle is the same as that of ZJ Pump. It also uses a pair of 8-shaped rotors to keep a certain gap in the pump shell and rotate in the opposite direction at the same speed to produce the function of suction and exhaust. The difference is that the inlet and outlet of Roots vacuum pump with bypass valve are connected, and a gravity valve is installed vertically in the passage of the two pumps (see Fig. 1-3). Its function is that when the product of the pressure difference between the intake and exhaust ports and the effective area of the valve exceeds the self-weight of the valve head, the valve head opens automatically. This is the higher pressure difference for reliable operation of the pump. Therefore, the valve is in fact an overload automatic protection valve, but also ZJP Roots Vacuum Pump Zui big advantage. In theory, ZJP Roots pump can start pumping system synchronously at atmospheric pressure. If the volume of the system is large, the bypass valve of ZJP Roots pump will be opened for a long time, and the effective pumping speed of the pump will be small. Therefore, it is not economical to start ZJP Roots pump at atmospheric pressure for large systems. It is suggested that ZJP Roots vacuum pump be started when the front pump reaches a certain pressure.

   

Model      Unit ZJP-30 ZJP-70 ZJP-150 ZJP-300 ZJP-600 ZJP-1200
Nominal volume flow rate L/S 30 70 150 300 600 1200
Max volume flow rate L/S 35 80 172 340 700 1280
Ultimate pressure Pa 3×10-2 3×10-2 3×10-2 3×10-2 3×10-2 3×10-2
Max pemissiable pressure difference Pa 1×104 1×104 8×103 8×103 5×103 5×103
Max compression ratio at zero flow   ≥30 ≥35 ≥40 ≥40 ≥45 ≥50
Starting pressure Pa 1×103 1×103 1×103 1×103 1×103 1×103
Noise dB(A) 72 73 76 77 80 83
Motor power Kw 0.55 1.1 2.2 4 5.5 11
Rotating speed r/min 2825 2825 2840 2890 2900 2930
Lubricant oil filling L 1.5 2 3.5 3.5 4 8
Weight Kg 75 125 175 280 480 800
Recommended backing pump   2X-8 2X-15 2X-30 2X-70 ZJP-15+2X-30 ZJP-300+2X-70


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