The opening and closing part of the gate valve is a gate, and 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 gate valve is sealed by the contact between the valve seat and the gate plate, and the sealing surface is usually welded with metal materials to increase wear resistance, such as 1Cr13, STL6, stainless steel, etc. The gate has a rigid gate and an elastic gate. According to the difference of the gate, the gate valve is divided into a rigid gate valve and an elastic gate valve.
Gate valve is a widely used valve. Generally, cut-off devices with a diameter of DN≥50 mm are selected for use. Sometimes gate valves are also used for cut-off devices with small diameters. Gate valves have the following advantages:
①The fluid resistance is small.
②The external force required for opening and closing is small.
③The flow direction of the medium is not restricted.
④When fully open, the erosion of the sealing surface by the working medium is smaller than that of the stop valve.
⑤The body shape is relatively simple, and the casting process is better
Cast iron flange gate valve is a kind of valve, which has the characteristics of low flow resistance, high height, and long opening and closing time. The opening and closing part of the gate valve is a gate. The movement direction of the gate is perpendicular to the direction of the fluid. The cast iron flange gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate has two sealing surfaces. The two sealing surfaces of the most commonly used model gate valve form a wedge-shaped, wedge-shaped angle valve.
Read MoreSend InquiryThere are generally two types of double disc gate vlaves, one is the wedge double disc gate valve (that is, the sealing surface of the gate and the center line of the stem are at a certain angle, there are 2.8° and 5°, different manufacturers have different designs) , The other is the parallel double disc gate valve, the gate sealing surface of this gate valve is parallel to the center line of the valve stem, and the two gates are separated in a K shape.
Read MoreSend InquiryThe soft sealing gate valve is suitable for non-corrosive liquid and gas medium at room temperature (≤80℃), such as clean water, air, oil, water treatment, sewage and other pipelines. The soft-seal gate valve has a very good sealing effect, almost Achieve zero leakage.
Read MoreSend InquiryThe electric stainless steel gate valve adopts a metal hard seal, and the sealing effect is reliable; the electric stainless steel gate valve has good performance and beautiful shape. The surface of the stem of the electric stainless steel gate valve is nitridated, which has very good effects on wear resistance and corrosion resistance. The electric stainless steel gate valve uses an elastic gate structure with very low friction and is equipped with an impact manual. It can be turned on and off easily.
Read MoreSend Inquiry