the general requirements for Resilient Seat Gate Valve

The opening and closing parts of the Resilient Seat Gate Valve are gates. The movement direction of the gates is perpendicular to the fluid direction. The gate valve can only be fully opened and fully closed, and cannot be adjusted and throttled. The gate has two sealing surfaces. The two sealing surfaces of the most commonly used gate valves form a wedge shape. The wedge angle varies with the valve parameters, usually 50, and 2 ° 52 '' when the medium temperature is not high. The gate of the wedge gate valve can be made into a whole, called a rigid gate; it can also be made into a gate that can produce a small amount of deformation to improve its processability and make up for the deviation of the sealing surface angle during processing. The plate is called a spring gate.

Resilient Seat Gate Valve

Elastic seated gate valve is also called lift rod gate valve (also known as open rod gate valve). Usually, there is a trapezoidal thread on the lifting rod, and the rotary motion is changed to linear motion through the nut on the top of the valve and the guide groove on the valve body, that is, the operating torque is changed to the operating thrust. When the valve is opened, when the lift height of the gate is equal to 1: 1 of the valve diameter, the fluid channel is completely clear, but this position cannot be monitored during operation. In actual use, the apex of the valve stem is used as a mark, that is, the position where it cannot be opened, as its fully open position. In order to consider the lock-up phenomenon caused by temperature changes, it is usually opened to the top position, and then back to 1 / 2-1 circle as the position of the fully open valve. Therefore, the fully open position of the valve is determined by the position of the shutter (ie, the stroke).

As a Light Type Gate Valve Supplier, share with you the general requirements.

1. The specifications and types of elastic seated gate valves should meet the requirements of pipeline design documents.

2. The model of the elastic seated gate valve should indicate the national standard number requirements. If it is an enterprise standard, the relevant description of the model should be indicated.