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  5. Regulating valves, dirt traps
  6. On/Off valve with special functions
  7. Valve with non return-function
  8. Valve with non return-function DN 80 PN 10/16

Valve with non return-function DN 80 PN 10/16Valve with non return-function DN 80 PN 10/16

1707080000 Valve with non return-function DN 80 PN 10/16

Components

  • 1: Main valve
  • 2: Ball valve (A, B)
  • 3: Throttle check valve (A, B)
  • 4: Check valve (A, B)
  • 5: Accessories (optional)
  • 6: Filter
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Product attributes
DN 80
PN 16 bar
L 310 mm
weight 27.000 kg
Availability on demand
manual

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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