PURPOSE

The pumps are intended for using in the systems of open type. The pump provides automatic changing of delivery from zero to maximum and vice versa depending on the pressure of hydraulic system.

The pumps are approved by the Russian Federation Register of Shipping for application on sea-going ships.

DESIGN

Maximum outlet pressure is controlled by the pressure valve within the range from 5 to 22 MPa at maximum delivery. The pressure control valve limits the delivery to 0.5 of maximum value by means of the delivery limiting screw.

Parameter

12НРДС

20НРДС

Working volume at maximum control parameter, cm3

11.6

54.8

Pressure at maximum delivery, MPa:

rated

maximum

 

16

22

 

16

22

Rotational speed at 16 MPa, rpm:

rated

maximum

minimum

 

1450

3000

500

 

1450

2500

500

Rated delivery at maximum control parameter, l/min

14.6

74

Rated capacity at maximum control parameter, kW

4.74

23.9

Delivery efficiency, not less

0.85

0.94

Cinematic viscosity of working fluid, m2/s (sSt)

7…1000

7…1000

Mass, kg

22

76

Overall dimensions, mm:

L

В

Н

 

261

306

236

 

467

366

318

Axial-piston pumps of self-priming type with pressure control, НРДС type