The gate valve is a control element in the liquid transportation system, which has the effects of stopping, adjusting, draining, avoiding backflow, stabilizing tube, separating or overflowing pressure relief, etc. Large-size gate valves used for liquid control components, ranging from easy shut-off valves to various gate valves commonly used in very intricate automated control systems, are very diverse in types and specifications.
The gate valve is a gate for opening and closing. The movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled.
The stem of china DIN3352 F4 resilient seated gate valve adopts stem seal structure, and the stem seal adopts three O-rings structure. The third O-ring can reduce the pressure at the gland, and at the same time, it can realize the replacement of the upper two seal rings when the pipeline has medium pressure. Compared with the stuffing box structure, the O-ring sealing structure can effectively reduce the opening and closing torque of the valve.
The core parts of the Best DIN3352 F4 resilient seated gate valve mainly include valve body, bonnet, stem and gate.The sealing of the whole Best DIN3352 F4 resilient seated gate valve mainly depends on the contact between the rubber gate and the casting. The rubber has a small amount of elastic deformation due to stress to achieve good sealing effect. The sealing is reliable, and can achieve zero leakage. The friction coefficient is very small, the wear is small, the torque of the valve is small when it is opened and closed, the operation is light, the service life is long, no pollution, corrosion resistance and the appearance is beautiful.
The sluice gate valve should be installed vertically (that is, the valve stem is in the vertical position and the handwheel is at the top).
The specifications and categories of DIN3352 F4 resilient seated gate valve shall meet the requirements of the pipeline design documents.
For a general overview in terms of operation:DIN3352 F4 resilient gate valve (DIN3352F4) consists of two parts:The upper part of DIN3352 F4 consists of 2-pronged pin socket with a rubber gasket (DIN3352F4) or a brass cover (DIN3352F4).