Series UHE, with integrated overflow valve and bypass

The industrial pumps of the UHE series are characterized by high operational reliability and their tried and tested design. The proven design ensures maintenance-free operation and a long service life. The pumps are ideal for pumping clean or slightly contaminated media such as bitumen, additives, fuels, heavy oils, but also vegetable oils. This makes the series suitable, for example, for machine tools, turbines or drying systems and much more.

Technical Data:

Details

  • Self-priming
  • self-lubricating
  • practically non-pulsating, quiet-running,
  • practically maintenance-free, pressure-proof and vacuum-tight shaft seals
  • Discharge range: 45 to 1050 l/h
  • Operating pressure: 0 – 40 bar
  • Temperatures: up to 150°C (higher temperatures on request)
  • Direction of rotation
    • I = indirect – counterclockwise
    • D = direct – clockwise
  • The direction of rotation can only be changed in the factory. Therefore, specify the desired direction of rotation as viewed from the pump shaft as per dimension sheet when ordering.

Areas of application

  • Construction
  • Agriculture
  • Marine / offshore

Technical Selection Chart

hp-Internal gear pumps to 40 bar

(direction of rotation I = indirect – counterclockwise)

hp-Internal
gear pump
Series UHE
Sizes:
Viscosity: 6 mm² sec-1 at 20°C Gear
rotor
size

Ø

Shaft

Ø

Threaded
connection

Suction
pressure

(S/A/R)
Manometer
connection

(M1/M2)
max.
permitted
ump speed
(RPM)

at l/D

Net weight
(kg)

at l/D

n = 1400 RPM Discharge l/h n = 2800 RPM Discharge l/h
at

9 bar

at

30 bar

at

40 bar

Item No.

l

at

9 bar

at

30 bar

at

40 bar

Item No.

l

UHE-A2-PZ 200 155 140 110542 500 380 330 130542 38 12 G 1/2″ G 1/4 “ 3500 4.4
UHE-A3-P 300 260 240 110543 700 600 550 130543 38 12 G 1/2″ G 1/4″ 3500 4.6
UHE-A4-M 450 425 390 110544 900 850 800 130544 38 12 G 1/2″ G 1/4 “ 3500 4.8
UHE-A5-GZ 550 500 450 110545 1300 1150 1050 130545 38 12 G 1/2″ G 1/4″ 3500 5

hp-Internal gear pumps to 40 bar

(direction of rotation D = direct – clockwise)

hp-Internal
gear pump
Series UHE
Sizes:
Viscosity: 6 mm² sec-1 at 20°C Gear
rotor
size

Ø

Shaft


Ø

Threaded
connection

(Suction,
pressure,
return)
(S/A/R)
Manometer
connection

(M1/M2)
Heating
power H2
in Watt
230 V,
50 Hz
Breakaway
torque of the
Pump

(Nm)
n = 1400 RPM Discharge l/h n = 2800 RPM Discharge l/h
at

9 bar

at

30 bar

at

40 bar

Item No.

D

at

9 bar

at

30 bar

at

40 bar

Item No.

D

UHE-A2-PZ 200 155 140 120542 500 380 330 140542 38 12 G 1/2″ G 1/4 “ 110 1.6
UHE-A3-P 300 260 240 120543 700 600 550 140543 38 12 G 1/2″ G 1/4″ 110 1.6
UHE-A4-M 450 425 390 120544 900 850 800 140544 38 12 G 1/2″ G 1/4 “ 110 1.6
UHE-A5-GZ 550 500 450 120545 1300 1150 1050 140545 38 12 G 1/2″ G 1/4″ 110 1.6

Curves and power requirement for hp-Pumps Series UHE

Scale Drawings for Series UHE

Pipe connections: Threaded connection DIN ISO 228-1

Type a1 a2 a3 b1 b2 c1 c2 d1 d2 d3
UHE-A2-PZ 5 36 66 85 130 36 50 12 13,5 54
UHE-A3-P 5 36 66 85 130 36 54 12 13,5 54
UHE-A4-M 5 36 66 85 130 36 58 12 13,5 54
UHE-A5-GZ 5 36 66 85 130 36 64 12 13,5 54
Type e1 f1 f2 f3 f4 f5 f6 S; A; R M1; M2 M3
UHE-A2-PZ 11 35 101 125 58 98 72,5 1/2 ” G 1/4 ” 1/8 ”
UHE-A3-P 11 35 101 125 58 98 72,5 1/2 ” G 1/4 ” 1/8 ”
UHE-A4-M 11 35 101 125 58 98 72,5 1/2 ” G 1/4 ” 1/8 ”
UHE-A5-GZ 11 35 101 125 58 98 72,5 1/2 ” G 1/4 ” 1/8 ”

Accessories for UHE Series
Axial face shaft seal: see page 20 (pinion size Ø 38)

hp-Electric standby and auxiliary heaters
for hp-Industrial pumps type H2

For use of the pumps with viscous medium the
use of H2 heating is provided by the manufacturer.

Need additional infos? Please contact us

Jochen Twellaar

+49 (0) 721/95618-23

twellaar@hptechnik.com

Joachim Rau

+49(0) 721/95618-25

rau@hptechnik.com