Serving as vigilant monitors for systems under pressure, safety valves are crucial for warding off excess pressure threats. They operate silently in various fields, especially within the industrial and chemical sectors. Triggered to release fluids when specific pressure limits are surpassed, they avert possible disastrous outcomes. Choose Shengao's safety valves to fortify your system's resilience and security.
The valve stem opening or closing stroke is relatively short and has a very reliable disconnection function. Due to the movement pattern of the valve disc, the change of the valve seat opening is proportional to the valve disc stroke, so it is particularly suitable for flow regulation. Therefore, this type of gate valve is particularly suitable for cutting off, regulating and throttling.
The valve stem drives the valve disc to move up and down to open and close.
Use fluid movement to drive the opening, with small flow resistance (a few special stop valves are high in and low out)
The valve body of the Globe valve can be cast or forged. There are many types to choose, depending on the actual working conditions. According to the valve body type, our company is mainly divided into angle type, Y type and T type
As a key part of the stop valve, the valve disc is also an internal part for opening and closing and pressure control. When sealing, it is connected with the base sealing ring to achieve the sealing effect. There are flat and conical sealing forms.
The valve stem of the stop valve drives the valve disc by selecting the lifting movement when opening and closing, and the handwheel is fixed on the top of the valve stem to achieve the purpose of connecting or cutting off the medium. According to the thread position on the valve stem, it is divided into upper threaded valve stem or lower threaded valve stem.
According to the design characteristics of the stop valve, the sealing surface is mainly divided into flat seal and cone seal, and the material can also be divided into metal and non-technical seal.
Simple structure, convenient to manufacture and maintain.
The working stroke is small and the opening and closing time is short.
Good sealing performance, small friction between sealing surfaces and long service life.
Special design, very suitable for frequent operations and high pressure differences.
Diverse applications, suitable for on/off and throttling tasks.
Directional flexibility, Can be installed in various directions without affecting performance.
The fluid resistance is large and the force required to open and close is large.
Not suitable for media with particles, high viscosity, and easy coking.
Poor adjustment performance.
Size and weight: Generally larger and heavier than similar butterfly valves or ball valves.
Operating speed Compared with quick-acting valves, it takes longer to open or close.
Operating torque Compared with other valves, more torque or force may be required to adjust.