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Double-eccentric Butterfly Valve can reducing the mechanical abrasion and the extrusion corner travel during opening or closing .Because of the butterfly plate sealing face will break away from the valve seat sealing face completely, when the plate rotates from 0° to 8°-12°.
| Size Range
NPS 2″-40″?/ DN50-1000mm |
Main Material
Carbon steel, Stainless Steel, Aluminum Bronze, Duplex steel etc. |
| Temperature Rating
-196?~ +600°C |
Stem?Material
Stainless steel |
| Pressure Rating
I.0Mpa?~ 15.0Mpa ?150LB?~ 900LB |
Leakage Level
Zero Leakage |
| Disc Material
Carbon Steel, Stainless steel, Duplex steel etc. |
Flange Drilling
ASME B16.5, EN 1092, GOST 33259 |
| Seat Material
Soft Seat: PTFE, EPDM, NBR etc. Metal Seat: SS+Graphite |
Body Style
Wafer, Lugged |
| Design Standard
ASME B16.34, API 609 |
Test Standard
API 598, EN12266-1, ISO 5208 |
| Face to Face
API 609, ISO 5752, MSS SP-68, ASME B16.10, EN558-1 |
Operation
Wrench, Worm Gear, Electric, Pneumatic, etc |
| Application
Bulk liquid storage, oil & gas, LNG storage & transportation, steam distribution systems, power generation, geothermal steam, sugar & ethanol, pulp & paper liquor, refining, chemical processing, water & wastewater, air separation, cryogenic services. |
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| Other
The carefully selected materials and contemporary design make our butterfly valve highly recognized. If our butterfly valve cannot meet your choice, we can provide you with special made. |
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The replaceable seat and seal ring system extends the overall service life of each Lixin valve, thus minimizing downtime without expensive field maintenance or full replacement
Two way zero leakage seal
The unique three eccentric structure makes our valve stable, reliable and easy to maintain
Compared with gate, stop or ball valves of the same size and pressure class, Lixin butterfly valve saves space and weight, and reduces the installation and maintenance cost to the greatest extent.
High strength material stem, anti fly out stem and integrated stem design make the valve more stable and suitable for more operation modes
Live-loading of packing and low leakage packing (meet ISO 15848-1) makes the stem seal safer and suitable for more working conditions
Offset 1:
The centerline of rotation axis/stem and seat deviate from each other for a certain distance to ensure the integrity of the sealing surface;
Offset 2:
The centerline of rotation axis/stem and body deviate from each other for a certain distance to reduce the friction between the sealing components when open and close the valve.
Offset 3:
The centerline of valve body and conical seat sealing face deviate from each other for a certain angle to ensure the sealing ring of the disc can be separated or touched with seat rapidly so that friction and squeeze will not exist between the sealing components.
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