Fixed Displacement Vane Pump

Care in Application (Fixed Displacement Single Pump)

Fixed Displacement Vane Pump Recommended Application

  1. In a fixed displacement vane pump system, the open circuit is recommended.

Suction & Discharge Requirements of Fixed Displacement Vane Pump

  1. Set Suction Port, the fluid transmission speed at the pump: must be between 0.6M/sec~1.5M/sec
  2. Set Discharge Port, the fluid transmission speed : must be between 2.3M/sec~4.75M/sec
  3. Set Suction , at the pump Suction Port must be between - 150mmHg ~ + 0.5Kgf/cm
  4. Lay the suction piping under the fluid level at least 1M

Fixed Displacement Vane Pump Installation Guidelines

  1. When connecting the pump to an electric motor, limit the tolerance of alignment between the two shaft centers to 0.05m/m TIR or angle ± 1 degree
  2. Before starting, make sure that direction of the electric motor shaft rotates the same direction with the pump shaft as indicated with an the nameplate or on the housing of the pump

Hydraulic Fluid & Viscosity Requirements

  1. Viscosity range for a fixed displacement vane pump:(Please refer to Page No.60)
    800 mm /sec maximum for starting with delivery 200 mm /sec maximum for starting at zero stroke 16 mm /sec minimum at maximum operating temperature
  2. In selecting a hydraulic fluid, remember that the minimum permitted temperature in the hydraulic system must be at least 8°C above the pour point.

First-Time Operation & Air Bleeding

  1. When the pump is be operated for the first time, place the pump delivery side in NO-Load condition and repeat starting and stopping of the motor for several times, to eject the air from inside of the pump and piping, if kept on 10 minutes operation will be much better.
  2. Air Bleed
    All the time of first-starting, if the pump does not immediately prime, air should be bled from the pump delivery line. This may be accomplished by loosening a connection in the delivery line close to the pump until oil flows-indicating the pump has primed. An air bleed valve is available for this purpose.

Compatibility with Special Fluids

  1. Water-in-Oil Emulsions
    Water-in-oil emulsions may be used. However, they require careful selection and monitoring of the fluid.
  2. Synthetic Fire Resistant Fluids
    Phosphate esters and their blends with operating viscosity of the petroleum oil described above may be used. These fluids are generally compatible with fluorocarbon and silicone elastomers.

Filtration Requirements

  1. Filtration Requirements
    For satisfactory service life of components, use full flow filtration to provide fluid cleanliness conforming to ISO code 18 / 15 or better.

RTVQ Ordering Code
RTVQ15 -17 F R A A -01
Model Displacement
(c.c/rev)		 Mouting Rotation Discharge Position Suction Position Shaft
RTVQ15 6,8,11,14,17,
19,23,26,31,38		 F:
Flange
L:
Foot 		Shaft view
R: Clockwise
L: Anticlockwise		 A: Up
B: Down
R: Right
L: Left		 A: Up
B: Down
R: Right
L: Left		 -01
-02
-03
RTVQ20 6,8,11,14,17,
19,23,26,31,38
RTVQ25
RTSVQ25		 18,22,26,32,
38,43,47,52,
60,65,75
RTVQ35
RTSVQ35		 60,66,76,82,
88,94,108,
116,125
RTVQ45
RTSVQ45
RTDVQ45		 136,156,189,
200,216,237
RTVQ Max Continuous Pressure-
Model Geometric Displacement
(c.c/rev.)		 Using anti-wear oil or
Phosphate ester fluid		 Using water glycol Using water-in-oil
emulsions		 Min Speed(rpm)
Max Pressure
(Kgf/cm²)		 Max Speed(rpm) Max Pressure
(Kgf/cm²)		 Max Speed(rpm) Max Pressure
(Kgf/cm²)		 Max Speed(rpm)
RTVQ15 06 210 1800 160 1200 140 1200 800
08
11
14
17
19
23
26
31 175 1500
38 1200
RTVQ20 06 210 1800 160 1200 140 1200 800
08
11
14
17
19
23
26
31 175 1500
38 1200
RTVQ25
RTVSQ25		 18 210 1800
1500  		 160 1200 140 1200 800
22
26
32
38
43
47
52
60
65
75
RTVQ35
RTSVQ35		 60 175 1800
1500		 160 1200 140 1200 600
66
76
82
88
94
108
116
125
RTVQ45
RTSVQ45
RTDVQ45		 136 175 1800 140 140 600
156
189
200
216 1500
237

*Tube Flow Chart

*Viscocity and Temperature

Product Groups

Accessories

Application

Hydarulic System