In 30s, there have been a lot of product types, the body shape is spherical spherical valve as the representative products, after 40s, angle valve, butterfly valve, diaphragm valve and ball valve have appeared, has occupied the dominant position in the market, a variety of products have been relatively complete. 60s after the emergence of the sleeve valve is soon to be seriously and become the main product of the ball valve. In 70s the emergence of the new product is a cam flexure valve, it has a large capacity, flow path is simple, unbalanced force is small, these advantages make it become the leader of the angle valve.
In this period, a variety of valves have been more perfect and form a series of. With this gas at the same time, side mounted booster valve (also known as sigma F type valve) developed, because of its unique structure, the installation height is small, can increase, so many factories and users. From the beginning of 80s, people has made all kinds of light (or fine small) valve, which is mainly characterized in the pneumatic actuator, a spring instead of a spring, like the original, the pneumatic actuator can be new appearance, it makes the regulating valve miniaturization. High capacity, the actuator actuator may replace the old heavy. Entered in 90s, due to the emergence of intelligent valve, the development of the valve to open a new page.
The pneumatic valve manufacturing industry started late, the relevant departments and factories to design and production through single seat valve, double seat control valve, three valve, pressure regulating valve, butterfly valve, long stroke actuator and valve positioner and other traditional products are still in use.
China pneumatic valve leap from the beginning of 80s, the factory has introduced many advanced technology abroad, to improve the performance of existing products, further standardization and serialization, has developed a side mounted pneumatic valve and light valve and other new products.
Now the valve market competition is fierce, manufacturers are only continuous innovation and improvement of products, in order to occupy a dominant position in the future market.