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1300

1470 Pressure surge drain valve

datasheet

Article No. DNPNL (mm)B1
(mm)		B2
(mm)		H1
(mm)		H2
(mm)		KVS
l/min.		weight
(kg)		 watchlist
1470040000 40 16 200 190 160 220 400 315 18.600
1470050000 50 16 230 190 160 220 400 506 19.800
1470065000 65 16 290 190 160 240 400 725 25.000
1470080000 80 16 310 190 180 400 400 1'200 31.200
1470080025 80 25 310 190 180 400 400 1'200 31.200
1470100000 100 16 350 220 200 280 400 2'150 40.000
1470125000 125 16 400 230 210 360 500 2'955 55.800
1470150000 150 16 480 250 220 400 500 4'960 79.800
DN
watchlist
1470040000 40
PN16
L (mm)200
B1190 mm
B2160 mm
H1220 mm
H2400 mm
KVS
l/min.		315
weight18.600 kg
1470050000 50
PN16
L (mm)230
B1190 mm
B2160 mm
H1220 mm
H2400 mm
KVS
l/min.		506
weight19.800 kg
1470065000 65
PN16
L (mm)290
B1190 mm
B2160 mm
H1240 mm
H2400 mm
KVS
l/min.		725
weight25.000 kg
1470080000 80
PN16
L (mm)310
B1190 mm
B2180 mm
H1400 mm
H2400 mm
KVS
l/min.		1'200
weight31.200 kg
1470080025 80
PN25
L (mm)310
B1190 mm
B2180 mm
H1400 mm
H2400 mm
KVS
l/min.		1'200
weight31.200 kg
1470100000 100
PN16
L (mm)350
B1220 mm
B2200 mm
H1280 mm
H2400 mm
KVS
l/min.		2'150
weight40.000 kg
1470125000 125
PN16
L (mm)400
B1230 mm
B2210 mm
H1360 mm
H2500 mm
KVS
l/min.		2'955
weight55.800 kg
1470150000 150
PN16
L (mm)480
B1250 mm
B2220 mm
H1400 mm
H2500 mm
KVS
l/min.		4'960
weight79.800 kg

Physical characteristics

  • The main valve is a hydraulically operated diaphragm valve; the operating energy is provided by the medium itself.
  • Most valve types operate purely hydraulically, without any external energy supply.

Application

  • Application in drinking water (other media on request)
  • Reduction of pressure peaks in the event of a power failure during pump operation

Mode of operation

  • The surge relief valve is installed near a pump at the outlet of a pressure pipeline. During controlled start-up and shutdown of pumping systems, no harmful pressure surges occur. In the event of a power failure, however, the abrupt stopping of the pump can cause dangerous pressure surges in the system, which may result in severe damage to the installation.
  • The surge relief valve reduces these pressure surges by opening during the low-pressure wave, ensuring that it is fully open when the high-pressure wave returns, allowing the excess pressure to be discharged to the atmosphere.

Product information

  • To calculate the dimensions of the valve please refer to the following information:
  • - Static pressure upstream of the valve when the pump is switched off
  • - Pump operating pressure
  • - Flow rates
  • - Water hammer calculations
  • - Existing pipe diameters and pipe lengths

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 ratings: PN 10 or PN 16 up to DN 300
  • Available in DN 100 in angle configuration
  • Nominal sizes 1 ½’’ and 2’’ with threaded connection (female thread)
  • Medium temperature up to 40 °C

Installation and assembly

  • Shut-off gate valves must be installed on both sides of the valve, and a strainer must be installed on the valve inlet side. Depending on the installation conditions, a dismantling joint must also be provided.

Vantages

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

Caution

  • Dimension H1 increases by 110 mm up to DN 100 and by 130 mm for DN 125 to DN 300 when equipped with an electrical position indicator and an opening limiter.
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