12 Inch Butterfly Valve

Description of 12 Inch Butterfly Valve:Most of ZECO 12 inch butterfly valves
operated by hand-wheel, wrench and handles, pay attention to the operation
speed, neither too fast nor too slow, and exert force at proper position. End
position is vital important to valve performance. In Close position, ball shall
be at right position to seat. The closure parts of the valve seat so close to
the campaign and leave the valve seat, the valve sealing performance depends in
part on the relative pieces of stem-driven closure of the valve seat to remain
sealed and the resulting mechanical force. If the role of a particular incident
in the direction of the closure of the closure of the pressure to close the
case up from the seat, and that this power is essential. Most of the internal
closure of the sliding piece in the valve seat does not rely on force stem
seals, but this type of valve position to close the right thing or not is very
important. In some cases, when the closure parts close to the final closed
position, the driving force needed to close the case may be greatly increased,
to reach the required position has been shut down parts of an auxiliary
compression. Close cases are not accessible or not stopped in the customs
location will have a seal leak and damage. Butterfly Valves requires right
position to guarantee sealing. When the indicator shows Close position,
movement shall be stopped.

Features of 12 Inch Butterfly Valve:1. ZECO 12 inch butterfly valve has no
dead zone design;2. ZECO 12 inch butterfly valve has live loaded packing
system design;3. ZECO 12 inch butterfly valve has fire protection structure
design;4. ZECO 12 inch butterfly valve has double safety sealing design.
Material of 12 Inch Butterfly Valve:
No Part Material
1 Body ASTM A216 WCB + 13Cr
2 Seal Ring Graphite + SS304
3 Retainer Flange ASTM A105
4 Pin ASTM A276 410
5 Disc ASTM A216 WCB
6 Stem ASTM A276 410
7 Stem Packing Graphite
8 Stem Beating SS304 + PTFE
9 Bolt ASTM A193 B7
10 Nut ASTM A194 2H
11 Yoke ASTM A216 WCB
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Minimum Order: 1 pieces

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