Valve controls the flow of liquids and gases through pipes and tubes. In pipeline systems, valve controls the flow of liquids and gases. It includes types of China Gate Valve, China Ball Valve, China Butterfly Valve,butterfly valve, gate valve, check valve, globe valve, ball valve, air valve, solenoid valve, pressure reducing valve and others. They are so much part of our lives, even though they are not much talked in the daily life. We hardly think twice of them. But a faulty valve in a plane, a ship, a machine or a plant could be catastrophic. Valves must be precision-made and trouble-free, whether it’s small enough to fit inside the blood vessel, or as big as a bike.

A valve which regulates the flow or pressure of a fluid has a lot of different types of valves for different types of dimensions. It could be small or big. A valve manipulates a flowing fluid, such as gas, steam, water, or chemical compounds, to help offset the load disturbance by opening, closing, or partially obstructing various passageways. Passage ways are clear or not by turning on or off a valve or more. Depend on its material, a valve is divided into cast iron valves, cast steel valves, stainless steel valves, forged steel valves, forged iron valves, chromium molybdenum steel valve, chrome molybdenum vanadium steel valves, dual-phase steel valves, plug valves, and others.

There is much room for expansion in the valve industry at the present. The main factors of the expansion include the growing energy demand, sustained increase in global population and urbanization in developing countries, the process of industrialization after the financial crisis. This trend has been growing steadily for years. Currently, the world's major economies have already entered the economic recovery cycle, the valve industry was showing a steady upward growth therewith.