China Double Flange Butterfly Valve Factory - China Factory, Suppliers, Manufacturers

China Double Flange Butterfly Valve Factory, , , ,. The product will supply to all over the world, such as Europe, America, Australia,, ,, .

Maintenance method of industrial valves

Industrial valve is an important accessory of the industrial pipeline control medium flow, which is widely used in petroleum, chemical industry, metallurgy, electric power, paper making, pharmaceut...
Classification of Air Valves

Air valves GPQW4X-10Q are applied to the pipeline exhaust in independent heating systems, centralized heating systems, heating boilers, central air conditioners, floor heating systems, solar heatin...
Classification and working principle of valve limit switch

Classification and working principle of valve limit switch June 12th, 2023 TWS Valve from Tianjin, China Key Words: Mechanical limit switch; Proximity limit switch 1. Mechanical limit switch Usuall...
Butterfly valve knowledge discussion

In the 30s, the butterfly valve was invented in United States, introduced to the Japan in the 50s, and was widely used in Japan in the 60s, and it was promoted in China after the 70s. At present, b...
The difference between soft sealed and hard sealed butterfly valve

Hard sealed butterfly valve: Butterfly valve hard seal refers to: the two sides of the sealing pair are metal materials or hard other materials. This seal has poor sealing properties, but it has hi...
How to repair the damaged valve stem?

① Use a file to remove the burr on the strained part of the valve stem; for the shallower part of the strain, use a flat shovel to process it to a depth of about 1mm, and then use an emery cloth or...