Van cầu thép rèn tay quay hiệu Zeco (Zeco Gear Operated Globe Valve)

Description

Gear Operated Globe Valve

Zeco’s gear operated globe valves are designed in accordance with BS1873 and ASME B16.34 for service of high temperature and high pressure and are widely used in fossil fuel power plant.

Principle: 

The two openings for medium flowing in and out are in the same direction, forming an angle of 180°. In addition, at seat and disc seal surface are over-lay with iron-base alloy or Co-base alloy or carbide alloy for long duration. For large size valves will be designed with main disc and vice disc type, and medium flow from up disc to down disc, that the operation torque will be greatly decreased and the seat tightness performance are more reliable.

Features：

1. Small flow resistance for fluid, only a small force is required when opening/closing;

2. No limitation on the flowing direction of the medium;

3. When valve is full opened, the sealing surface suffered small friction from the working medium;

4. Stem extended design can be chosen;

5. Low emission packing can be chosen according to ISO 15848 requirement;

6. With By-pass design be chosen.

Product Range:

Body material: carbon steel, stainless steel, alloy steel

Nominal diameter: 1/2″～24″

Pressure range:Class150～2500

End connection: RF, RTJ, BW

Working temperature:-29℃～560℃

Operation: Handwheel, Gear Box, Electric Actuator, etc.