Hard-sealed gate valves have the following notable product features: The weight of hard-sealed gate valves is approximately 20% to 30% less than that of traditional gate valves, which is attributed to their use of high-grade ductile iron
The main body makes installation and maintenance more convenient.
The opening and closing part of this valve is a gate plate, and the movement direction of the gate plate is perpendicular to the direction of the fluid. Hard-sealed gate valves can only achieve the functions of fully open and fully closed, and do not have the ability to regulate and throttle.
The gate has two sealing surfaces. The Angle formed by the two sealing surfaces of the common wedge-shaped gate valve varies with the valve parameters, usually 50 degrees, and 2 degrees 52 minutes when the medium temperature is not high.
There are usually trapezoidal threads on the lifting rod. Through the nut of the valve and the guide groove on the valve body, the rotational motion is converted into linear motion, thereby transforming the operating torque into the operating thrust.
When the valve is opened, the fluid passage is completely unobstructed when the height to which the gate is lifted is 1:1 times the valve diameter. However, in actual operation, this location is difficult to monitor directly. tong
The top point of the valve stem is often used as a mark, that is, the position where it cannot be opened, as the fully open position. To prevent the locking phenomenon caused by temperature changes, it is generally reversed by 1/2 to 1 turn after reaching the top position.
As the position of the fully open valve.
The hard-sealed gate valve adopts a flat-bottomed gate seat design. The same flat-bottomed design as that of the water pipe machine is less likely to cause debris accumulation, ensuring smooth fluid flow.
The gate plate has undergone overall inner and outer rubber treatment with rubber. Advanced rubber vulcanization technology from Europe is adopted to ensure the precise geometric dimensions of the vulcanized gate plate, and the rubber is combined with the ductile iron gate plate
It is firm, not easy to fall off, and has good elastic memory performance.
The valve body is made by precision casting process, ensuring the valve