Explanation and Characteristics of the Usage and Structure of Flat Gate Valves

Flat gate valve is a sliding valve whose closing part is a parallel gate plate. Its closing part can be a single gate plate or a double gate plate with supporting mechanism in between.

The clamping force of the gate plate on the valve seat is controlled by the pressure of the medium acting on the floating gate plate or floating valve seat. If it is a double gate flat gate valve, the supporting mechanism between the two gate plates can supplement this clamping force. Let Carbo bronze gate valve china summary for you.

Characteristics of flat gate valve

• The valve seat adopts the floating valve seat structure of O-ring seal and pre-tightening force, which makes the inlet and outlet of the flat gate valve double-sealed in both directions. The opening and closing torque of this structure is only half of that of a conventional valve, which can achieve easiness in opening and closing the valve;

• When fully opened, the passage is smooth and straight, with extremely low flow resistance and no pressure loss, and it can be used for clearing pipe by wool ball;
  

• It adopts a filler structure with self-sealing ability, which does not require frequent adjustment, and is extremely light in opening and closing, and the sealing is reliable. There is an auxiliary sealing grease injection structure at the packing box, and the sealing performance is absolutely reliable, truly achieving zero leakage, thus solving the problem of easy leakage at the filler of the general valve;
  

• When the flat gate valve is closed, it can automatically relieve the high pressure in the inner chamber to ensure safe use;
  

• It has a fully enclosed structure, good protective performance, and can meet the requirements of all-weather use.
  

Application of flat gate valve

• Petroleum and natural gas pipelines. Flat gate valves with flow guide holes are also convenient for clearing pipes.

• Product oil pipelines and storage equipment.
  

• Oil and gas wellhead devices, also known as valves for Christmas trees.
  

• Pipes with suspended particles in the medium.
  

• Urban gas pipelines.
  

• City water projects.
  

Advantages of flat gate valve

Low flow resistance and no contraction of its flow resistance is similar to that of a short straight pipe. Flat gate valves with flow guide holes can be installed on pipelines and directly cleaned with pipe cleaners. As the gate plate slides on the two valve seat faces, the flat gate valve can be used for media with suspended particles. The sealing surface of the flat gate valve is actually automatically positioned, and the valve seat sealing surface will not be damaged by the thermal deformation of the valve body. Moreover, even if the valve is closed in a cold state, the thermal elongation of the valve stem will not cause the sealing surface to be overloaded. At the same time, when the valve is closed, the flat gate valve without flow guide holes does not require a high-precision closing position of the gate plate, so the electric flat valve can be used to control the opening and closing position by stroke.

Selection principles of flat gate valve

• Petroleum and natural gas pipelines use single or double plate flat gate valves. If pipe cleaning is required, single or double plate flat gate valves with flow guide holes on the visible rod are used.

• Product oil pipelines and storage equipment use single or double plate flat gate valves without flow guide holes.
  

• Oil and gas wellhead devices use single or double plate flat gate valves with hidden rod floating valve seats and flow guide holes. Most of them are API16A standard, with pressure levels of API2000, API3000, API5000, API10000, API15000, and API20000.
  

• Pipes with suspending particles in the medium use knife-shaped flat gate valves.
  

• Urban gas pipelines use single or double plate soft-sealed visible rod flat gate valves.
  

• Urban water supply projects use single or double plate visible rod flat gate valves without flow guide holes.