Market Prospects Of Stainless Steel Stop Valves
Stainless Globe Valve is a kind of stop valve. The specific stainless steel materials are CF8 (304), CF3 (304L), CF8M (316), CF3M (316L). Different materials can be used for water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea and other media. Stainless steel stop valves are divided into manual stainless steel stop valves, pneumatic stainless steel stop valves, and electric stainless steel stop valves. The connection methods include general stop valves, threaded stainless steel stop valves, angle stainless steel stop valves, three-way stainless steel stop valves, direct current stainless steel stop valves, insulated stainless steel stop valves, etc. The most obvious advantage is: During the opening and closing process, the friction between the valve disc and the valve body sealing surface is smaller than that of the gate valve, so it is wear-resistant.
Stainless steel stop valve advantages:
(1) The structure is simpler than the gate valve, and it is easier to manufacture and repair.
(2) The sealing surface is not easy to wear and scratch, and the sealing performance is good. There is no relative sliding between the valve disc and the valve body sealing surface during opening and closing, so the wear and scratch are not serious, the sealing performance is good, and the service life is long.
(3) When opening and closing, the valve disc has a small stroke, so the height of the stop valve is smaller than that of the gate valve, but the structural length is longer than that of the gate valve.
(4) The opening and closing torque is large, the opening and closing is more difficult, and the opening and closing time is long.
(5) The fluid resistance is large, because the medium channel in the valve body is more tortuous, the fluid resistance is large, and the power consumption is large.
(6) The direction of medium flow When the nominal pressure PN ≤ 16MPa, the downstream is generally selected, and the medium flows upward from the bottom of the valve disc; when the nominal pressure PN ≥ 20MPa, the reverse flow is generally selected, and the medium flows downward from the top of the valve disc. In order to increase the sealing performance. When in use, the stop valve medium can only flow in one direction and cannot change the direction of movement.
(7) The valve disc is often eroded when fully opened.
As an indispensable part of the valve industry, stop valves play an invaluable role in my country's industrial development. From the early days of liberation to today, the production and manufacturing methods of stainless steel stop valves have been continuously improved, but there is still a gap in the face of foreign WJ41H bellows stop valves. Foreign products have effectively occupied the valve market in my country. Because their products are indeed excellent, my country's stainless steel stop valve industry is facing a severe market crisis. The crisis has greatly stimulated domestic stop valve manufacturers and promoted the formation of a competitive competition model. Enterprises need to speed up the pace of independent research and development, actively open up new markets, expand trade channels, and lay a solid foundation for my country's valve industry to go global.