• FKM stator
• Stainless steel (Cr-Ni-Mo 17-12-2) rotor
• Stainless steel housing for 12/2 – 12/100
• Grey cast iron housing for 6/300 – 3/12000
• Axial face seal
• Voltage: 3-phase, 230/400 VAC
• Degree of protection: IP55

Screw Pumps Types

There different types of screw pumps are available in the market in different designs. They are briefly discussed below.

One-Screw Pump

These pumps are named as PC pumps otherwise progressive cavity pumps, and worm Pumps. Generally, these types of pumps are not considered within the family of the screw-pump. Because the rotor in these pumps are not like a usual screw but somewhat a twisted round shaft. A progressive cavity pump includes one shaft with somewhat twisted within the form of a screw, & is enclosed within a pumping hall that is generally rubber lined.

Two Screw Pump

These pumps are also named as the double screw pump, and it is the most general type used high power applications like weighty oil tube transfer. The screws in the pumps are driven from the motor, & timing gears are generally included to turn the next screw.

Three Screw Pump

These pumps are also named as the triple screw pumps, and these are usually used in small applications like lubrication systems. The screws in the pump are determined from the motor to rotate the remaining two screws which are around it without using timing gears.

Four Screw Pump

These pumps are basically two screw pumps, however with two screws for each rotor in opposite directions. These pumps absorb the liquid within the suction port, then divides evenly & is routed to both pumps ends.

The two liquids flow with the help of the pump towards the center & connect jointly again before leaving the release port. Similar to the double screw pump, this pump includes a timing mechanism to make the second rotor run. These pumps are frequently used within Multi-phase applications & oil transport pipelines.

Five-Screw Pump

These pumps are mostly similar like a triple screw pump; however with five screws, not three screws. Similar to the 3 screw pump, this pump includes one diving rotor that drives all the remaining screws. This type of pump is frequently used in many applications like tube oil otherwise hydraulic.

Screw Pumps Applications

The applications of screw pumps include the following.

• These pumps have many uses in a variety of applications in industries like oil, manufacturing, gas, and mining.
• Most of the pump applications are high viscosity fluids like asphalt, otherwise oil, multi-stage liquid, which means there is fluid and steam mixed jointly within the liquid stream.
• Some of the examples of these pumps used in systems include Multi-phase Pumping, Lubrication, Hydraulic Systems, and Weighty Oil pipelines.

Advantages/Disadvantages

To define there are many screw pump advantages and disadvantages.

Advantages

• These are used in any type of liquid medium
• Most effective to generate non-pulsating and constant results
• It holds the benefit to provide steady flow with varying back force
• The pump is completely noise-free also at extended pressure and rpm levels
• It holds the advantage of generating extended volumetric efficiency
• Regulated output, minimal maintenance and fewer vibrations too

Disadvantages

• Too costly to be implemented in small industries