Product Introduction：
A bare stem butterfly valve is a type of butterfly valve with a directly exposed stem (bare stem) and no additional protective sleeve.
It achieves fluid opening and closing or flow regulation by rotating the valve disc, and is suitable for pipeline control of media such as water, gas, and oil.
Customers can install their own drive unit according to their actual operating conditions.
The valve stem is rotated by a handle, pneumatic, or electric actuator, which in turn rotates the valve disc:
Fully Open: The valve disc is parallel to the pipeline axis, minimizing fluid resistance.
Fully Closed: The valve disc is perpendicular to the axis, cutting off the medium.
Flow Regulation: The flow rate is controlled by the valve disc deflection angle (sensitive adjustment range 15°~70°).
Specifications:
Operation type:Bare Type
Size: DN50-DN1200
Pressure: PN10/16, Class150,JIS6K/10K
Face to Face Standard: API609,BS5155,DIN3202,ISO5752
Flange Standard:DIN,BS,ISO,ANSI,AS,JIS
Mounting Flange:ISO5211
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: CF8
Seal : EPDM
Stem : Stainless 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.
