non back flow preventer - Factory, Suppliers, Manufacturers from China

non back flow preventer, , , ,. The product will supply to all over the world, such as Europe, America, Australia,, ,, .

Four taboos for valve installation

1. Hydrstatic test at negative temperature during construction in winter. Consequences: because the tube freezes quickly during the hydraulic test, the tube is frozen. Measures: try to carry out hy...
Valve castings are prone to produce defects

1. The stomata This is a small cavity formed by the gas that the metal solidification process does not escape inside the metal. Its inner wall is smooth and contains gas, which has a high reflectiv...
Several quick solutions to the poor sealing performance of valves

The sealing performance of the valve is one of the main indexes to evaluate the valve quality. The sealing performance of the valve mainly includes two aspects, namely, internal leakage and externa...
Certificates required for valve industry.

1. ISO 9001 quality system certification 2. ISO 14001 Environmental Management System Certification 3.OHSAS18000 Occupational Health and Safety Management System Certification 4.EU CE certification...
Soft seal pneumatic wafer butterfly valve overview:

Pneumatic wafer soft seal butterfly valve compact structure, 90° rotary switch easy, reliable sealing, long service life, is widely used in water plants, power plants, steel mills, papermaking, che...
Butterfly valve from TWS Valve

Butterfly valves are important components in a variety of industrial applications, providing reliable, efficient flow control. When it comes to choosing the right type of butterfly valve for a spec...