Product Introduction:
This concentric flanged butterfly valve is manually operated by worm gear & handwheel.
The disc adopts nylon 11 coating to effectively prevent corrosion and avoid scratching the rubber seat. Equipped with EPDM liner, it provides reliable bi-directional tight shutoff.
Widely used in water supply, sewage, HVAC circulating water and general industrial pipeline systems.
Advantages of nylon coating:
wear-resistant, water-resistant, prevents electrochemical corrosion, and prevents scratches caused by the contact between the disc and the rubber seat;
The most mainstream configuration for water supply and drainage, and circulating water systems.

Specifications:
Operation type:Manual-Worm Gear
Size: DN50-DN2200
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 : Cast Iron
Disc: Cast Iron+Nylon Coated
Seal : EPDM
Stem : SS416
Worm Gear:Cast Iron
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, Vapor, 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.
