Manual Wafer Butterfly Valve
Purpose
This valve is used as a cutoff and adjusting equipment for the various water supply and drainage pipelines in building, chemical,
medicine, textile, ship and other industries.
Features
- Small in size and light in weight. Easy installation and maintenance. It can be mounted wherever need .
- Simple and compact construction, quick 90 degrees on-off operation.
- Minimized operating torque, energy saving.
- Flow curve tending to straight line. Excellent regulation performance .
- Long service life. Standing the test of tens of thousands opening/closing operations.
- Bubbles tight sealing with no leakage under the pressure test.
- Wide selection of material applicable for various medium.
Performance Parameters
PN: PN1.0MPa. PN1.6MPa.
DN. DN40~1200mm.
Suitable temperature; ≤100C.
Media: Water, gas, oil.
Executive Standard
- Design and manufacture standard : GB/T12238-2008.
- Flange connection dimension: GB 2555.
- Test and inspection standard: GB/T 13927
- Connection mode: Butt—connection
Main Part Materials
Valve axis— Stainless steel.
Butterfly plate — Chromium—Plated ductile iron/Stainless steel.
Body — Ductile iron/Cast steel.
Interlining of body — NBR/EPDM.
Handle— Aluminum alloy
Main dimensions
|
DN |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
350 |
400 |
450 |
500 |
600 |
700 |
800 |
900 |
1000 |
1200 |
|
L |
33 |
43 |
46 |
46 |
52 |
56 |
56 |
60 |
68 |
78 |
78 |
102 |
114 |
127 |
154 |
165 |
190 |
203 |
216 |
254 |
|
L1 |
180
(119) |
180
(119) |
180
(119) |
180
(119) |
245
(119) |
245
(132) |
245
(132) |
(152) |
(173) |
(192) |
(192) |
(220) |
(220) |
(280) |
(280) |
320 |
622 |
655 |
655 |
655 |
|
H1 |
54 |
70 |
78 |
90 |
102 |
122 |
150 |
(174) |
(208) |
(240) |
(264) |
(308) |
(330) |
(350) |
(410) |
(500) |
(550) |
(610) |
(680) |
(790) |
|
H2 |
155
(196) |
168
(210) |
175
(218) |
180
(226) |
218
(246) |
232
(268) |
258
(278) |
(345) |
(408) |
(462) |
(530) |
(606) |
(684) |
(766) |
(858) |
950 |
980 |
1000 |
1045 |
1190 |
|
I.D. Of Connection Flange d |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
208 |
255 |
308 |
355 |
405 |
455 |
505 |
605 |
705 |
805 |
905 |
1005 |
1205 |
Note:
- For general supply, DN50~150 comes as a handle type, but can also be fitted with a worm-gear device, for over DN160, the worm—gear type is used. The size in the ( ) in the table means the one with the worm—gear device.
- The rubber part can also be made of EPDM or fluorine rubber.
- In case of a dewfall proof butterfly valve, the H2 size is enlarged by 50 ~ 80mm than the datum in the above table, this is because a holder is added.
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