G Single Screw Pump Progressive Cavity Pump

Model NO.: G
Position of Pump Shaft: Horizontal Pump
Pump Casing Combined: Horizontal Split Pumps
Mounting Height: Suction Centrifugal
Impeller: Open
Usage: Pumps
Trademark: Haishi
Transport Package: Packing in Wooden Case
Origin: Taizhou
HS Code: 8413604010

G Single Screw Pump Progressive Cavity Pump

A single screw pump is a type of progressive cavity pump that operates by using a single external helical rotor and a double internal helical stator. As the metallic rotor rotates within the elastomeric stator, it creates a series of continuously progressing cavities that move axially, allowing fluid to be smoothly transported from the suction side to the discharge side without turbulence or pulsation.

G Single Screw Pump Progressive Cavity Pump
1. Discharge Pipe
2. Support
3. Stator
4. Rotor
5. Support
6. Cardan Universal Joint
7. Coupling
8. Suction Pipe
9. Cardan Universal Joint
10. Sealing Box
11. Driving Shaft
12. Bearing Housing
13. Cylindrical Roller Bearing
14. Tapered Roller Bearing
15. Coupling

Features & Characteristics

  • High wear resistance and elastic materials in the stator allow the pump to handle liquids with solid particles or fiber substances.
  • The spiral sealing line separates the suction and discharge chambers, enabling the pump to function like a valve.
  • Inherent self-priming capability allows for a significant suction lift of up to 8.5 meters.
  • Consistent cavity volume ensures a steady, non-pulsating flow.
  • Flow control can be achieved through speed adjustment, as capacity is proportional to rotational speed.

Pumped Medium

  • Liquids with varying viscosities, especially high-viscosity fluids that are difficult to pump.
  • Liquids with different densities and dewatered dry material.
  • Liquids containing solid particles, fibers, or suspended matter.
  • Mixtures of liquid, gas, and solid.
  • Shear-sensitive liquids.
  • Corrosive liquids.

Performance Data

  • Max. Discharge Pressure: 1 stage – 0.6 MPa, 2 stages – 1.2 MPa, 3 stages – 1.8 MPa, 4 stages – 2.4 MPa
  • Max. Capacity: 300 m³/h
  • Max. Working Temp.: 150°C
  • Max. Viscosity: 2.7 x 10⁶ cSt

G Single Screw Pump Progressive Cavity Pump

Series Code

G Standard Pitch
GL Large Pitch

Construction Code

--- Standard, Horizontal Erection
Z Direct Connection
U Vertical Erection

Seal Form

S1 Standard Packing Seal For high viscosity liquids
S2 Packing Seal + Flushing Ring Where high suction lift is required
S3 Standard Mechanical Seal For common application

Material Code

Code Stator Material Rotor Material Wet Parts Material
M1 NBR 45# + Chromium-plating 45 / HT200
M2 NBR 38CrMoAl+Nitridation 45 / HT200
M3 NBR 1Cr18Ni9Ti 1Cr18Ni9Ti / ZG1Cr18Ni9Ti
M4 EPR 45# + Chromium-plating 45 / HT200
M5 EPR 38CrMoAl+Nitridation 45 / HT200
M6 EPR 1Cr18Ni9Ti 1Cr18Ni9Ti / ZG1Cr18Ni9Ti
M7 FPM 45# + Chromium-plating 45 / HT200
M8 FPM 38CrMoAl+Nitridation 45 / HT200
M9 FPM 1Cr18Ni9Ti 1Cr18Ni9Ti / HT200
Other materials combinations available based on specific liquid requirements.

After Sales Service

Jiangsu Haishi Pump Mfg. Co., Ltd. provides comprehensive service before, during, and after the sale to meet customer needs. Our services include:

  • Technical training
  • Equipment evaluation
  • Installation and commissioning
  • Troubleshooting
  • Maintenance
  • Product updates and improvements

Service Commitment

  1. Engineers will be sent to assist with installation and commissioning after the contract is signed.
  2. One-year warranty and free technical support for the entire product life.
  3. Ongoing communication with clients to ensure continuous improvement of product quality.
  4. 24-hour hotline service, with a response within 8 hours.

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