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  4. WATER Plant Construction
  5. Regulating valves, dirt traps
  6. Pressure reducing valves
  7. Pressure reducing valve with non-return function
1500
1502
Pressure reducing valve with non-return functionPressure reducing valve with non-return function

1501 Pressure reducing valve with non-return function

datasheet manual

Article No. DNPN
(bar)		L
(mm)		weight
(kg)		Availability watchlist
1501007000 1 1/2" 16 210 11.000 on demand
1501008000 2" 16 210 11.000 on demand
1501040000 40 16 200 15.750 on demand
1501050000 50 16 230 16.250 on demand
1501050025 50 25 230 16.250 on demand
1501065000 65 16 290 21.300 on demand
1501080000 80 16 310 27.400 on demand
1501080025 80 25 310 27.400 on demand
1501100000 100 16 350 35.400 on demand
1501100025 100 25 350 35.400 on demand
1501125000 125 16 400 51.500 on demand
1501150000 150 16 480 76.000 on demand
1501150025 150 25 480 77.000 on demand
1501200000 200 10 600 114.600 on demand
1501200016 200 16 600 114.600 on demand
1501250000 250 10/16 730 247.000 on demand
1501300000 300 10/16 850 356.000 on demand
DN
watchlist
1501007000 1 1/2"
PN16 bar
L210 mm
weight11.000 kg
Availabilityon demand
1501008000 2"
PN16 bar
L210 mm
weight11.000 kg
Availabilityon demand
1501040000 40
PN16 bar
L200 mm
weight15.750 kg
Availabilityon demand
1501050000 50
PN16 bar
L230 mm
weight16.250 kg
Availabilityon demand
1501050025 50
PN25 bar
L230 mm
weight16.250 kg
Availabilityon demand
1501065000 65
PN16 bar
L290 mm
weight21.300 kg
Availabilityon demand
1501080000 80
PN16 bar
L310 mm
weight27.400 kg
Availabilityon demand
1501080025 80
PN25 bar
L310 mm
weight27.400 kg
Availabilityon demand
1501100000 100
PN16 bar
L350 mm
weight35.400 kg
Availabilityon demand
1501100025 100
PN25 bar
L350 mm
weight35.400 kg
Availabilityon demand
1501125000 125
PN16 bar
L400 mm
weight51.500 kg
Availabilityon demand
1501150000 150
PN16 bar
L480 mm
weight76.000 kg
Availabilityon demand
1501150025 150
PN25 bar
L480 mm
weight77.000 kg
Availabilityon demand
1501200000 200
PN10 bar
L600 mm
weight114.600 kg
Availabilityon demand
1501200016 200
PN16 bar
L600 mm
weight114.600 kg
Availabilityon demand
1501250000 250
PN10/16 bar
L730 mm
weight247.000 kg
Availabilityon demand
1501300000 300
PN10/16 bar
L850 mm
weight356.000 kg
Availabilityon demand

Physical characteristics

  • The main valve is a hydraulically operating diaphragm valve. The work energy is the inherent medium.
  • Most valve types operate purely hydraulically without any foreign energy.

Application

  • To use in drinking water systems (other media after consultation)
  • Reduction in pressure to supply the network
  • Emergency feed into a second network (network connections) with backflow prevention

Mode of operation

  • The pressure reducing valve reduces a variable inlet pressure to a constant outlet pressure. Fluctuating inlet pressure and flow rate have no effect on the outlet pressure controlled by the control valve. The outlet pressure is adjustable in the range from 1.5 to 12 bar (standard design). If the inlet pressure can fall below the outlet pressure, the backflow prevention function prevents any flowback of the water.

Product information

  • To calculate the dimensions of the valve please refer to the following information:
  • Maximum and minimum inlet pressure (static and dynamic pressure ratios)
  • Maximum and minimum flow rates
  • Possible requirement for extinguishing water
  • Available line diameters and lengths
  • Desired outlet pressure
  • Construction of the valve (straight or angle design)
  • For the calculation basis, information on the loss of pressure and the characteristic values of the valve, please refer to the end of Chapter E.

Design

  • Design according to DIN EN 1074
  • Construction length acc. to DIN EN 558
  • Flange mass according to DIN 1092-2, to PN 25 DN 300
  • Pressure levels: PN 10 or PN 16 to DN 300, PN 25 to DN 200, higher pressures on request.
  • Nominal widths DN 50, DN 80, DN 100 and DN 150 available in angular design
  • Nominal widths 1 ½" and 2" with threaded connection (female thread)
  • Medium temperature up to 40°C

Installation and assembly

  • Shut–off valves should be fitted on both sides of the valve and a dirt trap should be installed on the inlet side of the valve. Depending on the installation situation, a mounting/dismounting adapter and an aeration and ventilation system should be provided.

Vantages

  • Maintenance-free, non-rusting valve seat
  • Pressed-in seat
  • EWS-coating according to RAL GSK
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