Product Introduction：
Lug butterfly valves are concentric soft-seal butterfly valves with independent threaded lugs cast on both sides of the valve body, distinguishing them from ordinary wafer butterfly valves.
They rely on a 90° rotating disc to achieve pipeline on/off switching and flow regulation, featuring an integrated rubber seat with bidirectional zero leakage.
They comply with standards such as API609, ASME B16.5, and ISO5752, and are widely compatible with American standard Class 150/300 and Chinese standard PN10/PN16 piping systems, covering a full diameter range from DN50 to DN1200. They are the preferred choice for large-diameter pump stations, water supply and drainage, and chemical pipelines.
Advantages:
1.Convenient Maintenance:
Pipeline ends and sections can be independently pressurized on one side, eliminating the need for a complete shutdown and pressure relief during maintenance of the rear pipeline.
2.Stable Installation:
Independent lugs distribute stress evenly, preventing deformation of large-diameter pipes and providing vibration and water hammer resistance.
3.Reliable Sealing:
One-piece fully encapsulated valve seat ensures bidirectional leak-free sealing, meeting water supply, drainage, and fire protection leakage standards.
4.Lightweight and Compact:
Lighter and smaller in size compared to gate valves and globe valves, reducing the load on pipe supports.
5.High Versatility:
Standardized flanges and drive interfaces allow for pipeline replacement and modification without altering existing lines.
6.Low Maintenance Costs:
The valve seat is replaceable, with a simple internal structure and low failure rate.
Specifications:
Operation type:Manual-Lever
Size: DN50-DN2000
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
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.
