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Technical Article

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