Electric Butterfly Valve
Description of Electric Butterfly Valve:
ZECO electric butterfly valve is named after electric actuator operated. Butterfly valve in the pipeline for a long time to use, may be due to special medium, temperature or pressure causes a small number of problems, encounter these problems, we must think of ways to solve, and in order to prevent, no problems of the product for regular maintenance. The leakage of stem sealing usually caused by packing abrasion，can make up for tightening the packing gland. Too large packing force may increase stem friction, and make stem to be hard operated and accelerated the abrasion of packing.
Good sealing inside valve will be affected the sealing performance because of the damage or normal abrasion. For the harsh working conditions, the estimation and repairment beyond the scope of this manual, due to a variety of different structural forms, if need to know in advance, should cooperate with the manufacturer to find a suitable method. The external construction of valve is easy to check and maintain. So rational approach should be taken to prevent mechanical to damage the valve, prevent valve corrosion by the sediments in the atmosphere、chemical substances or wet gas and deterioration of its quality. Thread、bearings or gears work like the working interface should be periodic lubrication.
Features of Electric Butterfly Valve:
Material of Electric 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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ZECO Valve Group, as one of the China check valve manufacturers, founded in 1991 located in Shanghai, Yancheng, Wenzhou with focus on manufacturing through conduit gate Valve China, floating ball valve, trunnion mounted ball valve, top entry ball valve,swing check valve, dual plate check valve and forged valve.
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