Product Introduction：
Bare-shaft butterfly valve (also known in the industry as a bare-shaft butterfly valve, common models include WD71X and D71X bare-shaft type):
The valve body has a clamp-on connection structure. The upper end of the valve stem has no handle, no worm gear head, and no pneumatic/electric actuator.
Only the standard drive output shaft and ISO5211 standard connection flange are retained. The butterfly valve body with the drive unit is selected by the customer later as needed.
Connection method: Relying on the flanges at both ends of the pipeline, the valve body is directly clamped using double-ended bolts, eliminating the need for a separate flange.
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Working principle: The drive unit rotates the valve stem and butterfly plate 90°, achieving pipeline medium cutoff and flow regulation.
Main product features:
1. Flexible drive options, highly versatile.
2. Compact structure, lightweight, and easy installation.
3. Rapid opening and closing, low flow resistance.
4. Optional seals, wide adaptability to various operating conditions.
5. Simple maintenance.
Specifications:
Operation type:Bare Type
Size: DN50-DN1200
Pressure: PN10/16, Class150,JIS6K/10K
Design | Flange Connection | Face to Face | Test |
MSS SP-67
API609
EN593 | DIN PN10/16/25; ANSI B 16.1
BS4504; ISO PN10/16
JIS B 2212/2213
BS 10 table D; BS 10 table E | API609
ISO5752 BS5155 | API 598 |
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Materials:
Body : Ductile Iron
Disc: Ductile Iron
Seal : EPDM
Stem : Stainless Steel
Lever:Steel
No. | Part Name | Material |
1 | Body | Cast Iron/Carbon Steel/Stainless Steel/Al-Bronze |
2 | Disc | Cast Iron/Stainless Steel/Al-Bronze |
3 | Seat | EPDM/PEFE/Buna/NBR/Hypalon/Viton |
4 | Stem | WCB/SS416/SS410 |
5 | Bushing | PTFE/Lubricating |
6 | O ring | EPDM/PEFE/Buna/NBR/Hypalon |
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Characteristic:
Applicable Medium: Water, Oil, Gas
Applicable Temperature:-20~120℃
Nominal Pressure (Mpa) | 1.0 | 1.6 |
Nominal Diameter(mm) | 40-600 | 40-600 |
Test Pressure (Mpa) | Shell | 1.5 | 2.4 |
| Seal | 1.1 | 1.76 |
Applicable Temperature | -20-120℃ |
Applicable Medium | Water, Sewage, Sea water, Air, Food, Medicine, Oils, Acids, etc. |
Operating Type | Manual, Worm Gear, Pneumatic, Electric, etc. |
All valves are equipped with professional export protective packaging.
With protective caps on the sealing surfaces, rust-proof treatment, and shock-absorbing material filling to ensure intact transport; the loading is secure and safe.
We can also customize packaging according to customer requirements.
Regarding transportation methods, we can provide appropriate transportation options based on the cargo requirements and the customer's timeliness requirements.
Common transportation methods include: sea freight, air freight, land freight, and express delivery.
