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Help CenterBS EN 593 Standard Big Size Flanged End EPDM Lined Industrial Control Double Eccentric Flange Butterfly Valve
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Features
1. This butterfly valve structure design novelty, overall size is small, light weight.
2. Disc plate with double eccentric, opening and closing is rapid, convenient operation.
3. Disc plate with double eccentric, No sliding friction between disc plate and the sealing ring, sealing surface wear resistance long service life, reliable sealing, easy to adjust
Working principle
Rotate the butterfly valve handwheel, through the worm worm gear transmission, drive the stem disc plate with in the scope of 90 degrees to rotate, the disc plate is in open or closed, achieve the goal of on and off or cut off the medium.
Executive standard
Design and manufacture standard: GB12238-2008
Flange connection dimension: GB/T9113.1, GB/T 17241.6
Structural length: GB/T 12221
Pressure test: GB/T13927
NO. | Name | Material | Specification |
1 | Body | Ductile Iron | ASTM A536 |
2 | Disc | Plated Ductile Iron | ASTM A536 |
3 | Stem | Stainless Steel | A276-410 |
4 | Disc sealing | NBR(NIRILE) EPDM | |
5 | Pin | Stainless Steel | A182 F6A |
6 | Clamping ring | Steel | |
7 | Bushing | PTFE | |
8 | Connecting bracket | Ductile iron | ASTM A536 |
8 | Packing gland | Ductile iron | ASTM A536 |
10 | Packing | EPDM NBR |
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