China Ductile Iron Butterfly Valve Suppliers - Manufacturers, Factory, Suppliers from China

China Ductile Iron Butterfly Valve Suppliers, , , ,. The product will supply to all over the world, such as Europe, America, Australia,, ,, .

Pressure test method for industrial valves.

Before the valve is installed, the valve strength test and valve sealing test should be performed on the valve hydraulic test bench. 20% of low-pressure valves should be inspected randomly...
Flange Connection NRS/ Rising Stem Gate Valve From TWS Valve

When choosing a reliable, efficient flow control solution for industrial or municipal applications, rubber seated gate valves are a popular choice. Also known as NRS (Recessed Stem) Gate Valves or ...
Why do stainless steel valves also rust?

People usually think that the valve of stainless steel and will not rust. If it does, it may be a problem with the steel. This is a one-sided misconception about the lack of understanding of stainl...
Basic knowledge and precautions of valve corrosion

Corrosion is one of the most important elements that cause valve damage. Therefore, in valve protection, valve anti-corrosion is an important issue to consider. Valve corrosion form The corrosion o...
What is the purpose of a gate valve?

Soft seal gate valve is a valve widely used in water supply and drainage, industry, construction and other fields, mainly used to control the flow and on-off of the medium. The following points nee...
The classification and working principle of the butterfly valve

There are many kinds of butterfly valves, and there are many classification methods. 1. Classification by structural form (1) concentric butterfly valve; (2) single-eccentric butterfly valve; (3) d...