Products Details

American standard flange gate valve is a common valve type, widely used in a variety of industrial and engineering fields. The following is a detailed introduction to it:

Product Overview:
American standard flanged gate valves are suitable for piping with pressures of Class150 to Class2500 and operating temperatures ranging from -29 ° C to 425 ° C (carbon steel) or -29 ° C to 500 ° C (stainless steel). They are mainly used to cut off or connect the medium in the pipeline, suitable for a variety of media such as water, steam, oil, nitric acid, acetic acid, oxidizing medium and urea.

Structural features:

Opening and closing parts: the opening and closing parts of the gate valve are the gate plate, the direction of motion of the gate plate is perpendicular to the direction of the fluid, the gate valve can only be fully opened and fully closed, and can not be adjusted and throttled.
Sealing surface: the gate has two sealing surfaces, the common mode is wedge gate, wedge Angle varies with the valve parameters, usually 50°, the medium temperature is not high when 2°52'.
Valve stem: The valve stem and the valve stem nut are driven by trapezoidal thread, and the valve stem head is designed with a conical upper sealing surface, which is closely matched with the upper sealing seat of the valve cover when the valve is fully opened, without external leakage.
Valve body: the valve body, valve cover and other pressure parts are forged (tire model forging), and the valve body flange can also be welded.
Material and connection:

Material: The main material includes ASTM A216 WCB, etc., suitable for different media and working conditions.
Connection form: flange connection, socket welding connection and internal thread connection.
Design criteria:

Design and manufacture: compliant with ANSI B16.34, API 600, API 602 and other standards.
Flange size: According to ANSI B16.5 standard.
Sealing and maintenance:

Tightness: Most gate valves are forced to seal, that is, when the valve is closed, it is necessary to rely on external forces to force the gate to the seat to ensure the tightness of the sealing surface.
Maintenance: If the valve is used frequently, lubricate it at least once a month.
Application field:
American standard flange gate valve is widely used in petroleum, chemical, pharmaceutical, chemical fertilizer, electric power and other industries of various conditions of the pipeline.

Through the above introduction, it can be seen that the American standard flange gate valve has the characteristics of compact structure, reliable sealing, wide application range, etc., and is an indispensable valve type in the industrial pipeline system.