Needle valve working principle
Needle valve type: are an important part of the meter in the piping system, mainly cut-off valve and ball valve door, its function is used as open or cut off the pipeline path. Type needle valve with easy installation and disassembly, connecting tighten, to fire, explosion and high crushing ability, sealed performance is good wait for an advantage, is the power station, oil refining, chemical industry and instrument measuring line of an advanced connection mode of the valve gate. Needle valve sealing good, long service life, even if the sealing surface damage, also need to replace quick-wear part only, can continue to use. When installing type needle valves should make the flow of medium in line with the direction arrow on the valve body. Manual stop valve, ball valve door can be installed in any position on line. Type needle valve is a valve can accurately adjust the door USES broad, such as flame cutting with the cutting distance, the flame temperature adjustment knob is the needle valve, instrument type needle valve is an important part of the meter in the piping system, mainly cut-off valve and ball valve door, its function is used as open or cut off the pipeline path. The role of any valve door is for the cutting fluid. Depending on the valve core, can be divided into globe valve and gate valve door, plug valve, ball valve door, butterfly valve gate, needle valve, etc. Needle valve valve core is a very sharp cone, like the needle inserted into the valve seat, hence the name. Needle valve shape than other types of valve door that can tolerate more pressure, sealed performance is good, so generally used for small flow, high pressure gas or liquid medium sealing. Needle valve and pressure gauge is used the most suitable. General type needle valve type screw thread connection.