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Common faults and solutions of pneumatic control valves

Common faults and solutions of pneumatic control valves

Common faults and solutions of pneumatic control valves Pneumatic control valve is very common in the soda ash industry. It can be used with other instruments to realize automatic adjustment ...
Application of control valve and existing problems

Application of control valve and existing problems

If there is a certain gap between the design level and production level of China's control valve and advanced foreign countries, it is practical, but if there is a very ...
YB7 Back Pressure Valve

Common mistake and solutions of back pressure valve

The back pressure valve is also called the pump protection valve. It is used in working conditions where the general control system cannot be applied. As a special pressure control ...
automatic recirculation valve principle

What is the working principle of the automatic recirculation valve?

Working Principle A minimum flow valve, also known as the automatic recirculation valve, is a pump protection valve installed at the outlet of the feedwater pump to prevent the feedwater ...

Research and analysis of the flow control valve

In modern automatic control, the control valve plays a very important role. The proper distribution and control of flowing liquid, gas, or solid powder requires a control valve to complete. The low-pressure ...

8 ways to solve the vibration problem of the control valve

1. INCREASE THE STIFFNESS METHOD For oscillation and slight vibration, the stiffness can be increased to eliminate or weaken. For example, it is feasible to use a spring with a ...

4 Major Elements to Selecting a Suitable Regulator Valve Actuator Type and Specification

DRIVING ENERGY The most commonly used driving energy source is the power source or fluid source. If the power source is selected as the driving energy source, the three-phase power ...

The reason for and treatment of the pneumatic control valve is not tight

Pneumatic control valves often present some troublesome problems during use. For example, if the pneumatic control valve is not tight and the door is not tight, what should I do? Under normal circumstances, ...

How to correctly choose the positive and negative ways of the pneumatic control valve

The working model of the pneumatic control valve is air opening and gas closing. The opening of the air opening valve increases with the increase of the signal pressure. When there is ...

Common faults of gate valves and their solutions

1. Leakage at the gate of the gate valve The packing gland is too loose to evenly tighten the nut for the compression packing gland.If the number of packing rings is ...

Forged steel gate valve use characteristics and installation

FORGED STEEL GATE VALVE FEATURES The forged steel gate valve has low flow resistance. The inner medium passage of the valve body is straight through, the medium flows in a straight line, ...

Model code of gate valve

The description of the gate valve type is based on the Chinese valve model. It does not include some of the latest gate valve products developed and produced by our company. In ...

Why natural gas pipelines must use forged steel ball valves

The natural gas pipeline forged steel ball valve is a forged steel structure, which is especially suitable for working conditions of gas, purified natural gas, acid natural gas, water, coal slurry and ...

Comparisons of Pneumatic Ball Valves and Electric Ball Valves

The pneumatic ball valve consists of the ball valve and the pneumatic actuator. It generally needs to be used in conjunction with accessories including the magnetic valve, air treatment FRL, limit ...

Float Ball Valve design feature

BOW-OUT PROOF STEM For the purpose of preventing the stem from flying off resulting in abnormal rising of the inner pressure of valve,shoulder is fixed at the lower part of ...

Mr.Naoki Sawamur visits Datian Valve factory

On November 14, 2019, the famous Japanese valve manufacturer sawamura Valve Co., Ltd. and its president, Mr. Naoki sawamura, came to our company for inspection. Mr. Yu Chengshan, chairman of the company, ...

An Analysis Of Flow Characteristics Control Valves and Flow Optimization Computation of a Perforated Sleeve Valve

As an important element in the flow control system, the control valve adjusts the medium flow rate of the system by changing its own resistance characteristics. Its regulating quality affects ...
Valve products have been widely applied in petroleum, chemical engineering, nuclear power, metallurgy, electric power, hydraulic power, large coal chemical industry and other industries. Total quantity of valve products is constantly growing. Valve technology is developing and application of valve is also expanding continuously. Valve standards relative to valve products are showing their importance in at present.

Usage of Valve Standards in China

Valve products have been widely applied in petroleum, chemical engineering, nuclear power, metallurgy, electric power, hydraulic power, large coal chemical industry and other industries. Total quantity of valve products is ...
About Control Valve

About Control Valve

A control valve is a valve used to control fluid flow by varying the size of the flow passage as directed by a signal from a controller.[1] This enables the direct control ...
What Is A Centrifugal Pump Minimum Flow Bypass Line?

What Is A Centrifugal Pump Minimum Flow Bypass Line?

Centrifugal pumps rely on fluid to keep cool and lubricated while operating. They also rely on the fact that discharged fluid has somewhere to go. But what if the process ...

Cavitation in Control valve

From Wikipedia, the free encyclopedia Cavitation is the formation of vapour cavities in a liquid, small liquid-free zones ("bubbles" or "voids"), that are the consequence of forces acting upon the ...
Pump Run Out Protection

Pump Run Out Protection

Automatic Recirculation Valve Videos Normally pump protection valves are limited to minimum flow protection; however, severe damage can occur to the pump and driver by exceeding the intended operating range ...

Automatic Recirculation Valves Start-Up

Automatic recirculation valves Before start-up all lines must be flushed and the medium must be free from solids. Our valves are not designed to handle these. The lifetime of the ...

Automatic Recirculation Valves Installation

The DATIAN automatic recirculation valves are best installed directly on the outlet of the pumps for which they are meant. The valve layout is mainly based on the pump curve. Ensure ...
PRECAUTIONS WHEN USING BACK PRESSURE VALVE

Precautions when using back pressure valve

Avoid resonance with the system.When used with a pulsation damper, the pulsation damper should be placed between the pump and the backpressure valve to absorb the peak flow between the ...
Use of automatic recirculation valve

How to install the automatic recirculation valve

The automatic recirculation valve is mainly installed at the outlet of the centrifugal pump. When the centrifugal pump outlet flow is lower than the minimum flow, the pump protection valve ...
3 Way Auto-reflux Valve

3 Way Auto-reflux Valve Application and Features

There are many types of auto-reflux valves. The 3-way auto-reflux valve we have today has three ports, one in and two out, (left in, right and bottom). Unlike ordinary valves, there is an ...
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