Loading...

News

Research and analysis of 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. T…

Research and analysis of flow control valve

May 29, 2019

Technical characteristics of special hydrophobic control valve for alumina

In the alumina production process, the steam trap is the key valve in the high pressure dissolution production. In the past, due to the large volume of the alumina hydrophobic level control …

Technical characteristics of special hydrophobic control valve for alumina

April 29, 2019

3 Way Auto-reflux Valve Application and Features

3 Way Auto-reflux Valve concept 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). Unl…

3 Way Auto-reflux Valve Application and Features

April 23, 2019

Level control valve accessories introduction complete works

The level control valve positioner is the main accessory of the pneumatic actuator. It is used with the pneumatic actuator to improve the position accuracy of the valve and overcome the infl…

Level control valve accessories introduction complete works

April 23, 2019

Model Characteristics and Fault Analysis of 3-Way control valve

The ZJHF(H) type 3-Way control valve produced and sold by Datian Valve has two modes of three-way combined flow and three-way splitting. In some cases, it can be widely used instead of two t…

 Model Characteristics and Fault Analysis of 3-Way control valve

April 22, 2019

Use of 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 i…

Use of automatic recirculation valve

April 22, 2019

The reason 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 no…

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

April 22, 2019

Leakage and solution at the level control valve packing

External leakage of pneumatic control valve The external leakage of the pneumatic regulating valve is easy to find. For example, the packing gland is not pressed, the PTFE packing is dete…

Leakage and solution at the level control valve packing

April 18, 2019

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

The working mode 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 no pres…

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

April 18, 2019

What are the general requirements for the installation of the globe type control valve?

The installation position of the globe type control valve should meet the requirements of the process design, and should be close to the one-point indicating instrument related to it, so tha…

What are the general requirements for the installation of the globe type control valve?

April 18, 2019

Three-way control valve structure and use characteristics

3-Way control valve structure The three-way control valve has three inlets and outlets connected to the pipeline, which is equivalent to the integration of two single-seat valves. Accordi…

Three-way control valve structure and use characteristics

April 12, 2019

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 back pre…

Precautions when using back pressure valve

April 12, 2019

Automatic recirculation valve escorts safe operation of centrifugal pumps

The automatic recirculation valve escorts safe operation of centrifugal pumps. The pump is the core device of the fluid industry, acting like the heart of the human body, powering the fluid …

Automatic recirculation valve escorts safe operation of centrifugal pumps

April 11, 2019

Pump protection valve function and working principle / how to choose

The automatic recirculation valve is also called the boiler feed water pump recirculation valve. In the power plant it is installed at the outlet of the feed pump and connected to the deaera…

Pump protection valve function and working principle / how to choose

April 11, 2019

Automatic recirculation valve Installation and maintenance

Before the Automatic Recirculation Valves is shipped all connections (flanges or weld connection.) are covered with plastic caps. This way the valve internals are protected against the ingre…

Automatic recirculation valve Installation and maintenance

December 13, 2018

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 that the…

Automatic Recirculation Valves Installation

December 13, 2018

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 the case that…

Model code of gate valve

October 31, 2018

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 lin…

Forged steel gate valve use characteristics and installation

October 10, 2018

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 not enough, the…

Common faults of gate valves and their solutions

October 10, 2018

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 …

Why natural gas pipelines must use forged steel ball valves

October 10, 2018

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 conseque…

Cavitation in Control valve

June 20, 2018

About Control Valve

From Wikipedia, the free encyclopedia 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 enab…

About Control Valve

June 20, 2018

We Do Prefer Friendly Competition

We do prefer friendly competition in the valve industry, we are doing our best to improve ourselves, include product quality, after-sale services. Also we are trying best to reduce the cost.…

We Do Prefer Friendly Competition

June 20, 2018

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 dictates it needs o…

What Is A Centrifugal Pump Minimum Flow Bypass Line?

June 20, 2018

Comparisons of Pneumatic Ball Valves and Electric Ball Valves

Pneumatic 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 …

Comparisons of Pneumatic Ball Valves and Electric Ball Valves

June 14, 2018

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 the stem.In addi…

Float Ball Valve design feature

May 31, 2018

Three protection ways for pump

Continuous circulating system Minimum requirement of continuous circulating system pump is unrelated with the discharge of Process flow changes system. After setting of minimum flow, thro…

Three protection ways for pump

May 30, 2018

Centrifugal pumps require protection

If you use centrifugal pumps for any liquid-boiler feed water, condensate, or process fluids, a significant investment has been made in the pump, driver and related controls. Minimum flow pr…

Centrifugal pumps require protection

May 30, 2018

What are ARV or ARC valves

ARV valve stands for Automatic Recirculation Valve. An automatic recirculation valve is a multifunctional valve whose primary purpose is to ensure that a pre-determined minimum flow is assur…

What are ARV or ARC valves

May 30, 2018

Pump Run Out Protection

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 of the pump. Dama…

Pump Run Out Protection

May 22, 2018

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. Tot…

Usage of Valve Standards in China

May 14, 2018

How can the valve industry healthy and orderly development of

In recent years, the valve market competition is more and more fierce. Excessive competition in the market lead to the healthy and orderly development of enterprises are hard to come by. Ent…

How can the valve industry healthy and orderly development of

May 09, 2018

Valve products in China

Details of product category in China valve: the valve can be according to the needs of different industries can be divided into 10 categories, more than 3500 varieties, more than 40000 speci…

Valve products in China

May 09, 2018

China's valve industry development situation is grim

Understands from China general machinery industry association branch valve, China valve market turnover of up to 50 billion yuan a year, but has more than 100 one hundred million yuan market…

China's valve industry development situation is grim

May 09, 2018

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 valves will…

Automatic Recirculation Valves Start Up

May 09, 2018

Pump Run Out Protection

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 of the pump. Dama…

Pump Run Out Protection

March 30, 2018