ZECO pneumatic gate valve is a gate valve driven by compressed air. ZECO pneumatic gate valve has stable performance and convenient operation. It has been widely used as a quick cut-off valve in oil, natural gas and other industrial projects. Pneumatic actuator adopts double-layer cylinder structure, compared with ordinary single-cylinder actuator, its lifting force is larger, which solves the problem that the opening torque of large-diameter gate valve is too large to open. Because pneumatic actuators open and close quickly, ZECO is equipped with cushioning mechanism to reduce the wear of sealing surface and gate during quick closing.
1. ZECO pneumatic gate valve adopts double cylinder structure, the opening force is twice as large as that of single cylinder structure, and it can easily open those single cylinder which cannot be opened due to the large opening torque of large diameter gate valve or high pressure gate valve in valve body;
2. The pneumatic of ZECO pneumatic gate valve has positive and negative functions, which also makes the valve have the function of quick opening and quick closing. In addition, because the wedge structure of the gate valve is more tightly sealed, the pneumatic gate valve has excellent cutting function, which is more advantageous than other conventional valves;
3. The pneumatic of ZECO pneumatic gate valve has buffer mechanism, because the opening or closing speed is too fast, no buffer mechanism may damage the valve body sealing surface and gate sealing surface and cause the valve can not be sealed;
4. ZECO pneumatic gate valve can also be equipped with a pneumatic change-over mechanism on the cover of the pneumatic actuator. In case of accidental failure of the pneumatic actuator, the valve can be opened or closed by manual operation.
No | Part | Material |
1 | Body | ASTM A216 WCB |
2 | Seat Ring | ASTM A105 + 13Cr |
3 | Wedge | ASTM A216 WCB + STL |
4 | Stem | ASTM A276 410 |
5 | Bonnet Gasket | Graphite + SS304 |
6 | Bonnet Bolt | ASTM A193 B7 |
7 | Bonnet Nut | ASTM A194 2H |
8 | Bonnet | ASTM A216 WCB |
9 | Backseat | ASTM A182 F6a |
10 | Stem Packing | Reinforced Graphite |
11 | Pneumatic Actuator | ASTM A216 WCB |