3G Marine three screw pump including 3G general type,3GC marine type and 3GC special type. 3G three screw pump is rotor volume type pump. 3G marine screw pump using medium and characteristics range:
Medium:
Various oil that non-corrosive and without solid particle impurities, and liquid similar with oil. The transportation liquid viscosity is 1.2-100°E (3.0-760cst) .High viscosity liquid also can transport after heating to reduce viscosity.
Flow range:
0.2-590m3/h, Max.working pressure:100bar, temperature:150℃.
Structure features:
1.Simple and different construction types .Small volume is 0.2-6.5m3/h, pump body and bush make whole pump,the shaft seal is mechanical seal.
Large flow pump bush mostly adopts double suction horizontal installation,,Shaft seal has mechanical seal and packing seal.
There are two installation types: horizontal type and vertical type. Prime mover uses DC and AC marine electric motor.
2. 3G three screw pump has long service life because small mechanical friction.
3. The transportation liquid does uniform linear motion, so the pressure fluctuation is small, stable flow, low noise. Because rotating parts has small inertial, so starting torque and vibration is also small.
4. It has high suction capacity.
5. There is safety valve for medium flow screw pump to make sure the safety of pump,electric motor and pipe system. When pressure is over valve setting data, high pressure oil will come back to inlet of pump.
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