• Nov , 23 2023

The purpose of using a check valve is to prevent reverse flow of the medium, and a check valve is generally installed at the outlet of the pump. In addition, a check valve should also be installed at the outlet of the compressor. In short, in order to prevent reverse flow of the medium, check valves should be installed on equipment, devices, or pipelines. Generally, vertical lift check valves are ...

• Nov , 28 2023

Butterfly valves and box valves are commonly used valves, and their functions may differ to some extent. Before purchasing, it is necessary to distinguish between them and then choose the appropriate valve for use to ensure normal household use. So what are the differences between butterfly valves and gate valves. 1、 What are the differences between butterfly valves and gate valves 1. Action mode....

• Nov , 28 2023

Basic standards: GB/T 1047 Definition and selection of DN (nominal size) for pipeline components GB/T 1048 Definition and selection of PN (nominal pressure) for pipeline components GB/T 6567.4 Technical drawings - Graphical symbols for piping systems - Valves and control components GB/T 12220 Industrial Valve Markings GB/T 12221 Metal Valve Structure Length GB/T 12224 General Requirements for Stee...

• Dec , 21 2023

Butterfly valve is a general term, also known as flap valve. If further subdivided, butterfly valves can be divided into many types. Different types of butterfly valves have different operating conditions and produce different effects. Below, we will analyze the functions of butterfly valves based on several common types of butterfly valves, including soft sealed butterfly valves, hard sealed butt...

• Jan , 02 2024

Butterfly valve is a type of regulating valve with a simple structure, which can also be used for regulating low pressure and large diameter. Butterfly valves can be used to control air, water, steam, various corrosive media, mud, oil and other media. 1. Features: 1) Small size, light weight, flexible and convenient operation; 2) Simple and compact structure, good sealing performance, convenient m...

• Jan , 11 2024

1、 Working principle of check valve Check valve refers to a valve that automatically opens and closes the valve disc by relying on the flow of the medium itself to prevent medium backflow. It is also known as a check valve, one-way valve, backflow valve, and backpressure valve. Check valve is an automatic valve that mainly functions to prevent medium backflow, prevent pump and drive motor reversal...

• Jan , 18 2024

In high demand applications, cut-off requirements are often required for regulating valves, so the cut-off function is an important functional and internal quality indicator of regulating valves (see relevant information for the classification and standards of cut-off levels). In on-site use, faults such as poor shut-off of the regulating valve and large leakage often occur. Except for the increas...

• Jan , 23 2024

Working principle of pressure reducing valve 1) From the perspective of fluid mechanics, a pressure reducing valve is a throttling element that can change local resistance, that is, by changing the throttling area, the flow rate and fluid kinetic energy change, causing different pressure losses, and thus achieving the purpose of pressure reduction. It relies on the adjustment of the control and ad...

• Feb , 01 2024

1、 Working principle of check valve Check valve refers to a valve that automatically opens and closes the valve disc by relying on the flow of the medium itself to prevent medium backflow. It is also known as a check valve, one-way valve, backflow valve, and backpressure valve. Check valve is an automatic valve that mainly functions to prevent medium backflow, prevent pump and drive motor reversal...