non-return backflow preventer - China Factory, Suppliers, Manufacturers

non-return backflow preventer, , , ,. The product will supply to all over the world, such as Europe, America, Australia,, ,, .

Valve Flow Characteristics

Tianjin Tanggu Water-Seal Valve Co., Ltd (TWS Valve Co., Ltd) Tianjin，CHINA 14th，August，2023 Web:www.water-sealvalve.com Valve flow characteristics curve and classification valve flow character...
Before confirm order of butterfly valve,what we should Know

When it comes to the world of commercial butterfly valves, not all devices are created equal. There are many differences between the manufacturing processes and devices themselves that change the s...
How to choose concentric flanged butterfly valve?

How to choose flanged concentric butterfly valve? Flanged butterfly valves are mainly used in industrial production pipelines. Its main function is to cut off the flow of medium in the pipeline, or...
What does a valve do?

A valve is a pipeline attachment used to open and close pipelines, control the flow direction, regulate and control the parameters (temperature, pressure and flow rate) of the conveyed medium. Acco...
Knowledge of valve maintenance

For the valves in operation, all valve parts should be complete and intact. The bolts on the flange and the bracket are indispensable, and the threads should be intact and no loosening is allowed. ...
Flow rate gauges commonly used for various media

The flow rate and velocity of the valve mainly depend on the diameter of the valve, and are also related to the resistance of the structure of the valve to the medium, and at the same time have a c...