The Sichuan Z962Y high temperature and high pressure gate valve wholesale

 Opening and closing pieces of http://www.meidafm.com/1564.htm high temperature Z962Y high temperature and high pressure gate valve gate valve gate, perpendicular to the direction of movement of the gate with the direction of flow, the valve can only be fully open and fully closed, can not be scaling and throttling. Major domestic well-known manufacturers Kaifeng High Pressure Valve Co., Ltd., Shanghai rights Valve Equipment Co., Ltd., and Shaoyang, Hunan emerging hydropower plant machinery and equipment. The company is the Ministry of Machinery Industry, Ministry of Chemical Industry, China National Chemical Equipment Corporation sentinel production enterprises. Its products in the industry have a price advantage and technological advantages gate has two sealing surface, the most common mode of gate valve sealing surface to form a wedge, wedge angle with the valve parameters, usually 50, medium temperature does not high as 2 ° 52 '. Wedge gate valve can be made of a whole, called the rigid gate; also be made to trace deformation gate, in order to improve its process, make up the sealing surface angle deviation in the process, this gate The board called the flexible gate. Valve types, according to the sealing surface configuration can be divided into wedge gate valve and parallel gate-type valve, wedge gate valve can be divided into: single-gate, double plate and elastic ram type; parallel gate valve can be divided into single gate type and double plate. By the valve stem threads are divided into clear shot valve and the dark bar gate two. High temperature valve closed, the sealing surface can only rely on media pressure to seal, which the medium pressure to ram sealing surface pressure to the other side of the seat to ensure the sealing surface of the seal, which is self-sealing. Most of the valve is sealed by force, that is, the valve is closed, you have to rely on external forces forcibly ram pressure to the valve seat to ensure the sealing surface of the seal. High temperature gate valve with the valve stem with a straight line, called the lift rod valve (also called clear shot valve). Usually in the riser trapezoidal thread through the guide groove on the top of the valve nut and body, the rotary motion into linear motion, that is, the operating torque thrust into action. Open the valve, the valve gate valve lift height is equal to 1:1 times the diameter of the fluid channel completely, but at run time, this location can not be monitored. Actual use, the apex of stem as a sign that the fixed position, as its fully open position. Temperature appears to consider locking phenomenon, usually open to the vertex position, and then rewind 1/2-1 circle, as a fully open valve position. Therefore, the valve fully open position, according to damper position (ie, travel> OK. Some valve stem nut located at the gate, hand driven rotation of the to stem rotation of the gate to upgrade, this valve called dark bar called the rotating rod valve or gate valve recommended URL: cast iron gate www.wanhaovalve.net