Applications
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.
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
Design drawing of the stator and the rotor
Metal flexible rod universal joint
Spring flexible rod universal joint
Ball tooth universal joint
Rotor
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.
Stator
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.
