Flange-Mounted Valve


Butterfly valve with threaded holes.
This type enables the one sided lugging
of pipes.


FEATURES
- Absolutely tight sealing with flow in either
  direction
- The valve body and disc are accurately
   machined which results in low operating
   torque and long service life and reliability.
- Triple shaft bearings prevents shaft
   deflection and guarantees optimum
   guidance even after many years of
   operational service.
- Can be disassembled, material-specific
   recycling possible.
- Maintenance-free
- Fully repairable valve
- Single flange mounting is possible
  (please request details)

GENERAL APPLICATIONS
- Chemical and petrochemical industries
- Water and wastewater technology
- Pneumatic materials handling technology
- Shipbuilding
- Power generation industry
- Food industry
- Civil engineering
- For paint and lacquers,
  a silicon-free version is available

TECHNICAL DATA
Nominal
diameter:		 DN 20 -DN 600
(DN 20 onlyr PN 10/16)
Face-to face: EN 558 Series 20 (DIN 3202 T3 K1)
ISO 5752 Series 20
API 609 Table 1
BS 5155 Series 4
NF E 29-305.1
Flange
accommodation:		 DIN 2501 PN 6/10/16
ANSI B 16.5, Class 150
MSS SP44 Class 150
AWWA C 207
AS 2129 Table D and E
BS 10 Table D and E
JIS B 2211-5 K
JIS B 2212-10 K
Lap-joint flange: DIN 2641 and DIN 2642
Weld-on flange: DIN 2576
Flange surface
design:		 DIN 2526 Form A-E, ANSI RF
Top flange: EN ISO 5211
NF E 29-402
Marking: DIN EN 19
Tightness check: DIN 3230 T3 BO,
BN (leakate rate 1)
ISO 5208, Category 3
API 598 Table 5
ANSI B 16-104, Class VI
Temperature range: -20°C to +160°C depending on pressure, medium and material
Operating pressure: max. p 16 bar
Differential pressure: max. delta p 16 bar
Vacuum: 0,2 bar absolute, depending on medium and temperature
DN C L H M E ØD PN 16 kg
N n ØB
50 50 43 143 65 19 96 M16 4 125 3,4
65 65 46 155 71 19 110 M16 4 145 4,0
80 80 46 162 77 19 124 M16 8 160 4,5
100 91 52 181 89 19 148 M16 8 180 7,6
125 115 56 197 112 19 180 M16 8 210 9,5
150 140 56 210 123 19 208 M20 12 240 10,4
200 186 60 240 150 24 259 M20 12 295 17,5
250 239 68 286 179 24 320 M24 12 355 26,5
300 288 78 309 216 24 370 M24 12 355 43,5

 
DN Size           Operating Pressure
(mm) (in) 3 (bar) 6
(bar)		 10 (bar) 16 (bar) TORQUE

The torque values specified (MD) are based on liquid and lubricant media.

Powdery (nun-lubricant) media Md x 1,3

Dry gases/high viscous media Md x 1,2

The values specified are based on the initial breakaway torque.

Dynamic torque specification available upon request.

Regarding the dimensioning of actuators,
please contact us.

 
20 3/4 - - 5 -
25 1 - - 5 -
32 1 1/4 - - 5 -
40 1 1/2 - - 6 8
50 2 5 7 7 9
65 2 1/2 7 9 15 18
80 3 8 10 18 24
100 4 9 18 28 37
125 5 15 22 45 59
150 6 36 45 110 125
200 8 59 76 140 200
250 10 150 180 200 240
300 12 200 240 280 360
350 14 350 540 610 700
400 16 420 620 750 850
450 18 720 746 860 1500
500 20 900 1100 2255 3690
600 24 1050 2100 3000 5830

 
DN Size                                Opening angle
(mm) (in) 20° 30° 40° 50° 60° 70° 80° 90° Kv-Values

The Kv-value (m3 per hour)
is the flow of water
at a temperature of
5° C to 30° C (41° F to 86° F)
of delta p of 1 bar

The Kv-values specified
are based on tests carried out
by the
Delfter Hydraulics
Laboratories,
the Netherlands.

Permissible velocity of flow
Vmax 4,5 m/s for liquids and
Vmax 70 m/s for gases.

The throttle function is linear
of an angle 30° to 70°.

Avoid cavitation!

For further values,
please contact us.
20 3/4 - 1 4 8 11 19 27 32
25 1 - 1,5 5 10 15 24 32 36
32 1 1/4 - 1,5 5 11 16 27 35 40
40 1 1/2 - 2,2 8 15 21 33 43 50
50 2 1,2 8 13 22 38 50 65 85
65 2 1/2 2 9 22 42 77 115 170 215
80 3 8 24 50 95 150 240 330 420
100 4 13 28 65 130 180 340 550 800
125 5 26 65 130 230 350 530 870 1010
150 6 35 90 200 360 640 900 1350 2100
200 8 43 180 350 580 1000 1600 3000 4000
250 10 125 360 660 1100 1800 3100 5300 6400
300 12 200 550 1000 1600 2600 5000 7500 8500
350 14 350 780 1400 2400 4000 8000 10800 11500
400 16 490 1050 1800 3100 5500 11000 12000 14500
450 18 510 1080 2040 3350 6100 11500 14600 20500
500 20 520 1100 2200 3500 6200 12000 15100 21000
600 24 750 1400 2800 5100 8800 14000 22000 29300

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