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Hard sealed dark rod gate valve

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Ductile Iron Hard Sealed Dark Rod Gate Valve

Type: gate valve

Sealing: Brass

Valve Body: Ductile Iron

Design standard: ANSI B16.10

Flange drilling: ANSI B16.1

Work pressure: 125LB/150LB

Surface treatment: blue spray

Size: 1.5"-24"

The opening and closing parts of the concealed rod gate valve are gates. The movement direction of the gate is perpendicular to the direction of the fluid, so it can be adjusted and throttled. The gate has two sealing surfaces. The two sealing surfaces of the most commonly used mode gate valves form wedges, and the wedge angle varies with the valve parameters, usually 50. When the medium temperature is not high, it is 2 52'''''. Wedge gate valve can be made into a whole, called rigid gate; it can also be made into a gate that can produce slight deformation to improve its workability and make up for the deviation of sealing surface angle in the process of processing. This kind of gate is called elastic gate.

Requirement

1. The specifications and classifications of concealed stem gate valves shall meet the requirements of pipeline design documents.

2. The type of concealed stem gate valve shall be specified according to the national standard number requirements. If it is an enterprise standard, the relevant description of the model should be indicated.

3. The working pressure of the concealed stem gate valve should be greater than or equal to the working pressure of the pipeline. Without affecting the price, the working pressure of the valve should be greater than the actual working pressure of the pipeline; any side of the elastic seat gate valve should be able to withstand 1.1 times the working pressure of the valve without leakage; and the valve body should be able to withstand double the working pressure of the valve when the valve is opened.

4. The manufacturing standard of concealed stem gate valve shall state the national standard number according to which it is manufactured. If it is an enterprise standard, enterprise documents shall be attached to the procurement contract.

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