Selection of medium flange high temperature and high pressure gate valve

NegotiableUpdate on 05/20

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

The selection of medium flange high temperature and high pressure gate valves is either an imported type that follows ANSIB16.34 and JISL1E101 standards, or a national standard type that follows JB3595 standards The temperature pressure rating it follows is *

Product Details

Selection of medium flange high temperature and high pressure gate valve

It belongs to a forced sealing valve, so when the valve is closed, pressure must be applied to the gate to force the sealing surface not to leak. When the medium enters valve six from below the gate, the resistance that the operating force needs to overcome is the frictional force between the valve stem and the packing, as well as the thrust generated by the pressure of the medium. The force required to close the valve is greater than the force required to open it, so the diameter of the valve stem should be larger, otherwise the valve stem bending fault may occur.

Selection of medium flange high temperature and high pressure gate valve

Precautions for operation and maintenance:

The high-pressure gate valve operated by handwheel and handle can be installed at any position in the pipeline.

Handwheels, handles, and dynamic mechanisms are not allowed for lifting purposes.

The flow direction of the medium should be consistent with the arrow direction shown on the valve body.

High pressure gate valve is a widely used type of valve, which is widely popular due to its low friction between the sealing surfaces during the opening and closing process, durability, small opening height, easy manufacturing, and convenient maintenance. It is not only suitable for medium and low pressure, but also for high pressure. Its closing principle is to rely on the pressure of the valve stem to tightly fit the sealing surface of the gate and the sealing surface of the valve seat, preventing the flow of the medium.

High pressure gate valves only allow one-way flow of the medium and have directionality during installation. Its structural length is greater than that of a gate valve, and at the same time, it has high fluid resistance. During long-term operation, its sealing reliability is not strong.

High pressure gate valves are divided into three categories: straight through, right angle, and straight through inclined gate valves.

The types of gate valves can be divided into wedge gate valves and parallel gate valves according to the sealing surface configuration;

Wedge gate valves can be divided into single gate, double gate, and elastic gate types;

Parallel gate valves can be divided into single gate plate and double gate plate. According to the thread position of the valve stem, it can be divided into two types: rising stem gate valves and hidden stem gate valves.