Stainless Steel Stop Valve Material Introduction And Characteristics
Stainless Gate 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, DC stainless steel stop valves, insulated stainless steel stop valves, etc. The most significant advantage is that 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 points:
The structure is simpler than the gate valve, and it is easier to manufacture and repair.
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.
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.
The opening and closing torque is large, the opening and closing is more laborious, and the opening and closing time is long.
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.
When the nominal pressure PN of the medium movement direction is ≤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. To increase the energy of the seal. When in use, the stop valve medium can only move in one direction and cannot change the direction of movement.
The valve disc is often eroded when fully opened.
As an indispensable part of the valve industry, the stop valve plays a vital role in the industrial development of my country. From the early days of liberation to today, the production and manufacturing model of stainless steel stop valves has 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 serious market crisis. The crisis has greatly stimulated domestic stop valve manufacturers and prompted the formation of a competitive competition model. Enterprises need to step 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.