Power Station Flange Gate Valve

Design Specification

Design Standards: API 600, API6D, ASME B16.34, GB / T 12234

Structure Length: ASME B16.10, API6D, GB / T 12221

Connection Standard: ASME B16.5, ASME B16.47, GB / T 9113, JB / T 79, HG / T 20592

Stress Test: API 598, GB / T 13927, JB / T 9092

Pressure - Temperature rating: ASME B16.34, GB / T 12224 

Features

1, The gate has two sealing surface, the sealing surface to form a wedge, wedge angle with the valve parameters vary, usually 5 °.

2, Wedge gate valve sealing principle is to rely on the wedge on the two sealing surface and the valve body on the two sealing surface wedge when the tight combination, so as to achieve sealing performance.

3, wedge gate valve according to the stem to drive the opening and closing of the different ways, can be divided into Mingzha gate valve (lift bar gate valve) and dark rod gate valve (rotary bar valve).

4, Wedge gate valve according to the different forms of structure, can be divided into flexible gate valve and rigid gate valve.

5,The valve body for the casting molding, the valve body and the valve cover with bolts, the flange with a wound gasket seal, the customer has special requirements can also be used metal ring connection.

6, The channel is smooth, the flow coefficient is small. Sealing surface by the media erosion and erosion of small.

7, Sealing surface with alloy steel or carbide, wear resistance, anti-scratch performance.

8, The use of flexible graphite packing, sealed and reliable, light and flexible operation.

9, The flow of media is not restricted, no spoiler, do not reduce the pressure.

10, Simple shape, short structure length, manufacturing process is good, wide range of applications.

 Main Dimensions and weight