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  6. Pressure reducing valves
  7. Pressure reducing valve with inlet pressure control and non-return function
1504
1515
Pressure reducing valve with inlet pressure control and non-return functionPressure reducing valve with inlet pressure control and non-return function

1505 Pressure reducing valve with inlet pressure control and non-return function

datasheet manual

Article No. DNPN
(bar)		L
(mm)		weight
(kg)		Availability watchlist
1505007000 1 1/2" 16 210 11.500 on demand
1505008000 2" 16 210 11.500 on demand
1505040000 40 16 200 16.250 on demand
1505050000 50 16 230 16.750 on demand
1505065000 65 16 290 21.800 on demand
1505080000 80 16 310 27.900 on demand
1505100000 100 16 350 35.900 on demand
1505125000 125 16 400 52.000 on demand
1505150000 150 16 480 76.000 on demand
1505200000 200 10 600 115.100 on demand
1505200016 200 16 600 115.100 on demand
1505250000 250 10/16 730 247.500 on demand
1505300000 300 10/16 850 356.000 on demand
DN
watchlist
1505007000 1 1/2"
PN16 bar
L210 mm
weight11.500 kg
Availabilityon demand
1505008000 2"
PN16 bar
L210 mm
weight11.500 kg
Availabilityon demand
1505040000 40
PN16 bar
L200 mm
weight16.250 kg
Availabilityon demand
1505050000 50
PN16 bar
L230 mm
weight16.750 kg
Availabilityon demand
1505065000 65
PN16 bar
L290 mm
weight21.800 kg
Availabilityon demand
1505080000 80
PN16 bar
L310 mm
weight27.900 kg
Availabilityon demand
1505100000 100
PN16 bar
L350 mm
weight35.900 kg
Availabilityon demand
1505125000 125
PN16 bar
L400 mm
weight52.000 kg
Availabilityon demand
1505150000 150
PN16 bar
L480 mm
weight76.000 kg
Availabilityon demand
1505200000 200
PN10 bar
L600 mm
weight115.100 kg
Availabilityon demand
1505200016 200
PN16 bar
L600 mm
weight115.100 kg
Availabilityon demand
1505250000 250
PN10/16 bar
L730 mm
weight247.500 kg
Availabilityon demand
1505300000 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 feed a network whilst maintaining a minimal inlet pressure
  • Emergency feed into a second network (network connections) whilst maintaining a minimal inlet pressure
  • Ensuring and maintaining the inlet pressure
  • Prevention of a backflow

Mode of operation

  • The pressure reducing valve with inlet pressure control and backward flow prevention reduces a variable inlet pressure to a constant outlet pressure, controls the inlet pressure (if the inlet pressure drops below the pre–set value, the valve closes) and prevents the backward flow if the inlet pressure falls below the 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).

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)
  • Desired outlet pressure
  • Required sustained pressure on the inlet side
  • Maximum and minimum flow rates
  • Possible requirement for extinguishing water
  • Available line diameters and lengths
  • 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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