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A Class Progressive Cavity Pump

  • A Class Progressive Cavity Pump
  • A Class Progressive Cavity Pump

A class progressive cavity pumps produced by Subtor feature a structural design with a bearing black, which can bear a higher axial load than traditional designs. The pump is designed to handle any transport mediums, including water, with a maximum solid content of 45%. The pumps are suitable for the following applications:
1. Food processing factories: transport jams, meat pastes, starches, chocolate, etc.
2. Sewage treatment plant: deliver desulphurized sewage, sludge, etc.
3. Oilfield Industry: convey oil and gas mixtures, oil and water mixtures, etc.

Stage: 1-12 stages
Type: single-head monoblock pump, double-head nonoblock pump

Working pressure
Single-head pump: 6 bar, 12 bar, 18 bar, 24 bar, 36 bar, 48 bar, 60 bar, 72 bar
Double-head pump: 5 bar, 10 bar, 20 bar

Model selection
Model Flow range m3/h Speed range rpm Motor power Kw
VD015-006P04OH 0.18~0.42 180-550 0.37~0.75
VD020-018P04OH 0.5~1.2 180-550 0.55~1.5
VD030-056P04OH 1.5~6 200~650 1.75~3
VD035-120P04OH 3~10 180~550 2.2~7.5
VD040-010P04OH 4~15 150~520 4~11
VD050-022P04OH 8~25 135~470 7.5~15
VD060-038P04OH 12~40 140~450 7.5~22
VD070-058P04OH 15~60 136~420 22~30
VD090-106P04OH 30 ~100 120~350 30~55
VD100-160P04OH 35~140 100~350 30~75
VD120-240P04OH 60~200 80~270 45~90
VD150-480P04OH 70~270 70~240 55~110
VD170-600P04OH 80~340 50~190 75~160

Working principle
Progressive cavity pumps use positive displacement through interference between the rotor in eccentric motion and the fixed rotor. The seal cavities are disconnected and the rotation of the rotor inside the stator. The seal cavities are axially moved from the inlet to the outlet, this creates a pressure differential that causes the medium to flow to the different seal cavities.

Structural features
Structural features
  • Design drawing of the stator and the rotor
    Design drawing of the stator and the rotor
  • Metal flexible rod universal joint
    Metal flexible rod universal joint
  • Spring flexible rod universal joint
    Spring flexible rod universal joint
  • Ball tooth universal joint
    Ball tooth universal joint

The rotor can be designed and manufactured according to the specifications of customers. Surface hardening or vacuum heat treatments can be applied to metal materials in order to increase their hardness up to HRC 65-67.

Material: NBR, NBRH, HNBR, EPDM and FKM materials can be used for the stator as they can withstand various abrasion and high temperature resistant mediums and operational environments.

Universal joint
Universal joint transmission components can be produced and installed in your pump. In addition to traditional pin type and pin sleeve type universal joints, we supply hygiene class, flexible type, ball tooth type, and cross pin type universal joints, to handle the varying torques and axial loads.

Shaft seal
Packing or mechanical seals can be installed on the shaft depending on your specific working conditions. Cooling and washing systems can also be installed in order to extending the useful life of the seal and pump in general.

Driving system
SEW, NORD, ABB and other high quality driving systems are available for selection.

Weifang Subtor as a German Subtor invested company in China, offers wide range of progressive cavity pumps and components. The A class progressive cavity pump has typical applications as food pumping, slurry pumping, sewage pumping, oil pumping, etc. A progressive cavity pump is a type of positive displacement pump, also known as eccentric screw pump. With German supported technology and rich marketing resources, Subtor provides quality PCP pumps with custom solutions for global clients.

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