Low Noise Water Butterfly Valves Chain Wheel Turbine Type EPDM Seated
Water Butterfly Valves Technical Specification
-Nominal pressure:1.0/1.6/2.5Mpa
-Strength testing pressure:1.5/2.4/3.75Mpa
-Sealing testing pressure:1.1/1.76/2.75Mpa
Executive standard
Water Butterfly Valves Brief introduction:
Double eccentric end flanged resilient sealing butterfly valve is operated by the disc rotating form
0° to 90°, can be applied to cut off or regulate the flow of medium.
Vitreous enamel is available upon request.
The valve can be actuated by operating lever, handle wheel, electric actuator or pneumatic actuator.
Widely used for potable water supply and distribution, electric power plant, gas supply, warm-air system,
smelting plant, chemical industry.
Water Butterfly Valves Features:
⊙ Adjust tightness
Rubber sealing ring and disc can adjust tightness or softness of sealing with clamping ring, it insures
best performance of adjusting the compression of sealing.
⊙ Sealing reliable
Body and disc made of ductile iron which promote the impact resistance and pressure-bearing
capacity, sealing ring made of rubber and valve seat’s sealing surface is conical shaped, make the
sealing capacity more reliable.
⊙ Excellent corrosion protection
Inside electrostatic epoxy resin power coating or vitreous enamel(upon request), outside electrostatic
epoxy resin power coating.
⊙ Reliable health nature
Epoxy resin power is up to the health standard.
|
Design standard
|
DIN3354
|
|
Face to face
|
DIN3202 or BS 5155
|
|
Flange end
|
DIN 2501
|
|
Test & inspection
|
DIN 3230 or GB/T 13927
|
|
Working temperature
|
NBR<80℃; EPDM<120℃; FPM<160℃
|
Main external and connection dimension
1.0MPa mm
|
DN
|
L
|
H1
|
H2
|
H3
|
Flange dimensions comply with DIN 2501
|
|
long type
|
short type
|
O
|
C
|
g
|
f
|
b
|
n-d
|
|
150
|
210
|
140
|
226
|
165
|
|
285
|
240
|
212
|
3
|
19
|
8-23
|
|
200
|
230
|
152
|
255
|
192
|
|
340
|
295
|
268
|
3
|
20
|
8-23
|
|
250
|
250
|
165
|
293
|
227
|
|
395
|
350
|
320
|
3
|
22
|
12-23
|
|
300
|
270
|
178
|
326
|
260
|
|
445
|
400
|
370
|
4
|
24.5
|
12-23
|
|
350
|
290
|
190
|
368
|
314
|
|
505
|
460
|
430
|
4
|
24.5
|
16-23
|
|
400
|
310
|
216
|
423
|
346
|
634
|
565
|
515
|
482
|
4
|
24.5
|
16-28
|
|
450
|
330
|
222
|
455
|
385
|
666
|
615
|
565
|
532
|
4
|
25.5
|
20-28
|
|
500
|
350
|
229
|
506
|
422
|
728
|
670
|
620
|
585
|
4
|
26.5
|
20-28
|
|
600
|
390
|
267
|
568
|
490
|
790
|
780
|
725
|
685
|
5
|
30
|
20-31
|
|
700
|
430
|
292
|
632
|
550
|
854
|
895
|
840
|
800
|
5
|
32.5
|
24-31
|
|
800
|
470
|
318
|
692
|
615
|
924
|
1015
|
950
|
905
|
5
|
35
|
24-34
|
|
900
|
510
|
330
|
815
|
678
|
1098
|
1115
|
1050
|
1005
|
5
|
37.5
|
28-34
|
|
1000
|
550
|
410
|
880
|
743
|
1163
|
1230
|
1160
|
1110
|
5
|
40
|
28-37
|
|
1200
|
630
|
470
|
1024
|
860
|
1307
|
1455
|
1380
|
1330
|
5
|
45
|
32-40
|
|
1400
|
710
|
530
|
1210
|
1010
|
1350
|
1675
|
1590
|
1535
|
5
|
46
|
36-43
|
|
1600
|
790
|
600
|
1340
|
1140
|
1480
|
1915
|
1820
|
1760
|
5
|
49
|
40-49
|
|
1800
|
870
|
670
|
1460
|
1360
|
1640
|
2115
|
2020
|
1960
|
5
|
52
|
44-49
|
|
2000
|
950
|
760
|
1660
|
1485
|
1800
|
2325
|
2230
|
2170
|
5
|
55
|
48-49
|
1.6MPa mm
|
DN
|
L
|
H1
|
H2
|
H3
|
Flange dimensions comply with DIN 2501
|
|
long type
|
short type
|
O
|
C
|
g
|
f
|
b
|
n-d
|
|
150
|
210
|
140
|
226
|
165
|
|
285
|
240
|
212
|
3
|
19
|
8-23
|
|
200
|
230
|
152
|
255
|
192
|
|
340
|
295
|
268
|
3
|
20
|
12-23
|
|
250
|
250
|
165
|
293
|
227
|
|
405
|
355
|
320
|
3
|
22
|
12-28
|
|
300
|
270
|
178
|
326
|
260
|
|
460
|
410
|
378
|
4
|
24.5
|
12-28
|
|
350
|
290
|
190
|
368
|
314
|
|
520
|
470
|
438
|
4
|
26.5
|
16-28
|
|
400
|
310
|
216
|
423
|
346
|
634
|
580
|
525
|
490
|
4
|
28
|
16-31
|
|
450
|
330
|
222
|
455
|
385
|
666
|
640
|
585
|
550
|
4
|
30
|
20-31
|
|
500
|
350
|
229
|
506
|
422
|
728
|
715
|
650
|
610
|
4
|
31.5
|
20-34
|
|
600
|
390
|
267
|
568
|
490
|
790
|
840
|
770
|
725
|
5
|
36
|
20-37
|
|
700
|
430
|
292
|
632
|
550
|
854
|
910
|
840
|
795
|
5
|
39.5
|
24-37
|
|
800
|
470
|
318
|
692
|
615
|
924
|
1025
|
950
|
900
|
5
|
43
|
24-40
|
|
900
|
510
|
330
|
815
|
678
|
1098
|
1125
|
1050
|
1000
|
5
|
46.5
|
28-40
|
|
1000
|
550
|
410
|
880
|
743
|
1163
|
1255
|
1170
|
1115
|
5
|
50
|
28-43
|
|
1200
|
630
|
470
|
1024
|
860
|
1307
|
1485
|
1390
|
1330
|
5
|
57
|
32-49
|
|
1400
|
710
|
530
|
1210
|
1010
|
1350
|
1685
|
1590
|
1530
|
5
|
60
|
36-49
|
|
1600
|
790
|
600
|
1340
|
1140
|
1480
|
1930
|
1820
|
1750
|
5
|
65
|
40-56
|
2.5MPa mm
|
DN
|
L
|
H1
|
H2
|
H3
|
Flange dimensions comply with DIN 2501
|
|
long type
|
short type
|
O
|
C
|
g
|
f
|
b
|
n-d
|
|
150
|
210
|
140
|
226
|
165
|
|
300
|
250
|
211
|
3
|
20
|
8-28
|
|
200
|
230
|
152
|
255
|
192
|
|
360
|
310
|
274
|
3
|
22
|
12-28
|
|
250
|
250
|
165
|
293
|
227
|
|
425
|
370
|
330
|
3
|
24.5
|
12-31
|
|
300
|
270
|
178
|
326
|
260
|
|
485
|
430
|
390
|
4
|
27.5
|
16-31
|
|
350
|
290
|
190
|
368
|
314
|
|
555
|
490
|
450
|
4
|
30
|
16-34
|
|
400
|
310
|
216
|
423
|
346
|
634
|
620
|
550
|
500
|
4
|
32
|
16-37
|
|
450
|
330
|
222
|
455
|
385
|
666
|
670
|
600
|
560
|
4
|
34.5
|
20-37
|
|
500
|
350
|
229
|
506
|
422
|
728
|
730
|
660
|
610
|
4
|
36.5
|
20-37
|
|
600
|
390
|
267
|
568
|
490
|
790
|
845
|
770
|
720
|
5
|
42
|
20-40
|
|
700
|
430
|
292
|
632
|
550
|
854
|
960
|
875
|
820
|
5
|
46.5
|
24-43
|
|
800
|
470
|
318
|
692
|
615
|
924
|
1085
|
990
|
930
|
5
|
51
|
24-49
|
|
900
|
510
|
330
|
815
|
678
|
1098
|
1185
|
1090
|
1028
|
5
|
55.5
|
28-49
|
|
1000
|
550
|
410
|
880
|
743
|
1163
|
|
|
|
5
|
|
|
|
1200
|
630
|
470
|
1024
|
860
|
1307
|
|
|
|
5
|
|
|
|
1400
|
710
|
530
|
1210
|
1010
|
1350
|
|
|
|
5
|
|
|
|
1600
|
790
|
600
|
1340
|
1140
|
1480
|
|
|
|
5
|
|
|
Water Butterfly Valves FEATURES
⊙ EPDM seated, good seal
⊙ Low weight
⊙ Low flow resistance
⊙ Small operation torque
⊙ Easy to install and maintain
⊙ Open-close 90° more smoothly
Water Butterfly Valves APPLICABLE STANDARDS
1. Design according : API 609
2. Test standard according: JIS B2003
3. Connect flange standard according: JIS B2212
4. Face to face standard according: JIS B2002
9. The malfunction and resolving:
|
malfunction
|
whys
|
solution
|
|
Seal leak
|
1, Some rubbish on the seal
2, Seal have been light damage
|
① Clean the rubbish.
② Replacing the disc
|
|
Stem Packing leak
|
1, packing be damaged
2, packing lapse
|
① Tighten the gland nut
② Change the packing
|
|
flange leak
|
1, the nut release
2, gasket lapse
|
1 . Tighten the nut
2. Change the gasket
|
10. Maintenance
Open the worm box cover and add some butter per two months.
Check the seal, packing and flange, if leak, please maintain ASAP.
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