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  4. WATER Plant Construction
  5. Regulating valves, dirt traps
  6. On/Off valve with special functions
  7. Valve with non return-function
1706
1709
Valve with non return-functionValve with non return-function

1707 Valve with non return-function

datasheet manual

Article No. DNPN
(bar)		L
(mm)		weight
(kg)		Availability watchlist
1707007000 1 1/2" 16 210 13.000 on demand
1707008000 2" 16 210 13.000 on demand
1707040000 40 16 200 16.250 on demand
1707050000 50 16 230 16.750 on demand
1707065000 65 16 290 20.550 on demand
1707080000 80 16 310 27.000 on demand
1707100000 100 16 350 34.600 on demand
1707125000 125 16 400 50.600 on demand
1707150000 150 16 480 76.000 on demand
1707200000 200 10 600 110.000 on demand
1707200016 200 16 600 110.000 on demand
1707250000 250 10/16 730 245.000 on demand
1707300000 300 10/16 850 356.000 on demand
DN
watchlist
1707007000 1 1/2"
PN16 bar
L210 mm
weight13.000 kg
Availabilityon demand
1707008000 2"
PN16 bar
L210 mm
weight13.000 kg
Availabilityon demand
1707040000 40
PN16 bar
L200 mm
weight16.250 kg
Availabilityon demand
1707050000 50
PN16 bar
L230 mm
weight16.750 kg
Availabilityon demand
1707065000 65
PN16 bar
L290 mm
weight20.550 kg
Availabilityon demand
1707080000 80
PN16 bar
L310 mm
weight27.000 kg
Availabilityon demand
1707100000 100
PN16 bar
L350 mm
weight34.600 kg
Availabilityon demand
1707125000 125
PN16 bar
L400 mm
weight50.600 kg
Availabilityon demand
1707150000 150
PN16 bar
L480 mm
weight76.000 kg
Availabilityon demand
1707200000 200
PN10 bar
L600 mm
weight110.000 kg
Availabilityon demand
1707200016 200
PN16 bar
L600 mm
weight110.000 kg
Availabilityon demand
1707250000 250
PN10/16 bar
L730 mm
weight245.000 kg
Availabilityon demand
1707300000 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)
  • Prevention of backflow into the supply system
  • Can be used, above all else, in combination with other valve functions

Mode of operation

  • The backflow prevention valve hydraulically prevents any backflow, when the inlet pressure is lower that the outlet pressure. The opening and closing speeds can be set on the throttle non–return valve.

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)
  • Existing counterpressure
  • Maximum permissible loss of pressure
  • 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.

Vantages

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