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How to Design and Select Butterfly Valve
Blog, Valves Study,

How to Design and Select Butterfly Valve

1. Overview： The butterfly valve is an important device in the water supply and drainage pipeline system. With the progress of industrial technology, different requirements are put forward on the structure and performance of the butterfly valve. Therefore, the type, material and connection form should be reasonably selected according to the working conditions during design […]

Oct.06.2020
How to Select Chemical Valves Under Corrosive Media Conditions?
Blog, Valves Study,

How to Select Chemical Valves Under Corrosive Media Conditions?

For valves under corrosive medium conditions, anti-corrosion is the most critical part of chemical equipment. If the metal materials of chemical valves cannot be selected correctly, a little carelessness can damage the equipment, or cause an accident or even a disaster. According to relevant statistics, about 60% of the damage of chemical equipment is caused […]

Oct.05.2020
What is Straight-through Electromagnetic Pulse Valve？
Blog, Valves Study,

What is Straight-through Electromagnetic Pulse Valve？

General introudction to Straight-through Electromagnetic Pulse Valve: The straight-through electromagnetic pulse valve is composed of an electromagnetic pilot valve and a main valve. When energized, the iron core is sucked up by the electromagnetic force and the pilot valve port is opened to reduce the pressure of the medium in the upper cavity of the […]

Oct.05.2020
Butterfly Valve Installation & Maintenance Guide
Blog, Valves Study,

Butterfly Valve Installation & Maintenance Guide

Butterfly valve, also called flap valve, is a kind of regulating valve with simple structure COVNA Butterfly valves are used in many different fluid services and they perform well in slurry applications also. They can be used in liquids, steam, cryogenics, cooling water, air, gasses, firefighting & Vacuum services. Butterfly Valve is used in all […]

Sep.28.2020
What are the Advantages of Butterfly Valves?
Blog, Valves Study,

What are the Advantages of Butterfly Valves?

Butterfly valves can be divided into pneumatic butterfly valves, electric butterfly valves, manual butterfly valves, etc. The butterfly valve is a valve that uses a circular butterfly plate as an opening and closing part and rotates with the valve stem to open, close and adjust the fluid channel. The butterfly plate of the butterfly valve […]

Sep.25.2020
The Advantages of 2 Way Motorized Ball Valve
Valves Study,

The Advantages of 2 Way Motorized Ball Valve

COVNA GROUP manufactures 2 way motorized ball valve over 20 years. We provide different types, sizes, materials voltages motorized valves. So, let me introduce what are the advatages of the most popular 2 way motorized ball valves: 1.The external leakage is completely blocked, the internal leakage is easy to control, and the use is safe. […]

Sep.23.2020

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