Analysis of extended stem gate valve manufacturers need to develop high value added gate valve in China

China's valve industry has been able to produce more than ten categories of products. Such as extended stem gate valve, globe valve, ball valve, butterfly valve, safety valve, check valve, throttle valve, plug valve, pressure reducing valve, diaphragm valve, drain valve, emergency shut-off valve, etc., the maximum operating temperature is 570 ℃, the minimum is - 196 ℃, the maximum pressure is 600MPa, and the maximum diameter is 5350mm. Although these extended stem gate valves and other products have strongly supported the domestic economic construction, we should be aware that most of our extended stem gate valves and other products are general technology content or labor-intensive products, and rarely have the international leading level. It is a pity that all the valve enterprises such as extended stem gate valve have failed in the recent bidding for the main pipeline of West to east gas transmission.

There are several ways for enterprises such as extended stem gate valve to implement technological innovation and research and develop new products. One is through cooperation with scientific research institutions of colleges and universities. For example, the main steam control valve of power station boiler developed by Dagao valve and a company affiliated to a certain institute recently is a product with international leading level. The pressure drop of extended stem gate valve is much lower than the international standard, which has a very promising prospect in the power station industry; Second, in the form of foreign cooperation or technology introduction, the cooperation between Dagao valve and a foreign company shortens the gap between us and foreign countries in products such as extended stem gate valves. In addition to the above practices, conditional extended stem gate valve manufacturers can independently develop.