Advantage
1. Small flow resistance. The medium channel inside the valve body is straight, the medium flows in a straight line, and the flow resistance is small.
2. Less effort when opening and closing. It is compared with the stop valve, because whether it is open or closed, the direction of movement of the gate is perpendicular to the direction of medium flow.
3. Large height and long opening and closing time. The opening and closing stroke of the gate is relatively large, and the lifting is carried out by the screw.
4. Water hammer is not easy to produce. The reason is the long closing time.
5. The medium can flow in any direction on both sides, easy to install. Both sides of the gate valve channel are symmetrical.
6. The structural length (the distance between the two connecting end faces of the shell) is small.
7. The shape is simple, the length of the structure is short, the manufacturing process is good, and the scope of application is wide.
8. Compact structure, good valve rigidity, smooth passage, small flow resistance, stainless steel and hard alloy sealing surface, long service life, PTFE packing, reliable sealing, light and flexible operation.

Shortcoming
It is easy to cause erosion and scratches between the sealing surfaces, and it is difficult to maintain. The size is large, it needs a certain amount of space to open, and it takes a long time to open and close. The structure is more complicated.

ZHEJIANG QIAI TUBING INDUSTRY CO.,LTD was established in 1996, is professional China Plumbing Pipe Fittings Manufacturers and Plumbing Pipe Fittings factory. QIAI Based on excellent management,relying on the perfect quality system .All the productions passed by ISO9001 international quality management systerm,Certificated by CE.Our main products include: PP-R pipes and fittings,Aluminum pipes and fittings, PE-RT pipes and fittings,Brass Fittings,Water and Gas Valves, Stainless Steel Corrugated Flexible Gas hose, wholesale Plumbing Pipe Fittings, and so on.At present, the company's product sales network has spread all over the world, establish and improve the quality, efficient and fast professional marketing management team and service support system for the vast number of users, welcome!