Manual Flanged Telescopic Butterfly Valve

Purpose

This valve is suitable for the pipelines in the working conditions of food, medicine, environmental protection, petrochemical industry and mainly used for open—close.

Features

This butterfly valve integrates a compensator and a flanged butterfly valve and can be extended in a certain range and overcome the deviation in a certain angle caused by butt—connecting different shafts so as to get an easy valve and pipeline installation and removal.

Executive Standard

  • Design and manufacture standard, GB/T12238.
  • Flange standard. GB/T17241.6(cast iron). GB/T9113(cast steel).
  • Test and inspection. GB/T13927.

Performance Range

PN
0.6
1.0
1.6




MPa
Strength Test
0.9
1.5
2.4
Sealing Test
0.66
1.1
1.76
Applicable Temperature
≤80
°C
Medium Used
Water, Gas, oil goods, etc.

Main Part Materials

Title Of Parts Material
Body

Grey Cast Iron, Ductile Iron, Cast Iron

Butterfly Plate

Grey Cast Iron, Ductile Iron, Cast Iron

Stem

Stainless Steel

Seat Ring

Copper Alloy, Stainless steel

Packing

Flexible Graphite, NBR

Seal Ring

NBR

Main dimensions

DN
100
125
150
200
250
300
350
400
450
500
600
700
800
900
1000
1200
1400
1600
1800
2000
L1
200
200
280
425
425
560
560
580
580
580
660
550
550
550
750
925
925
925
1150
1150
L2
180
180
270
400
400
450
450
535
535
535
570
750
750
750
900
1000
1000
1000
1250
1250
H
373
405
440
612
693
747
802
991
1037
1127
1377
1496
1584
1676
1760
2018
2363
2730
2844
3127
H1
114
128
139
174
215
245
270
305
325
360
445
505
560
630
760
900
1000
1160
1247
1362
Lmax
216
232
239
284
295
300
325
332
355
365
420
445
479
506
516
560
590
630
680
730
Lmin
174
186
195
215
235
254
271
283
305
316
370
395
425
455
465
512
540
585
630
680

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