Needle Valve High pressure resistance
Needle valve with easy installation and disassembly, fastening connection, is conducive to fire, explosion and pressure and high pressure, good sealing performance advantages, needle valve sealing is good, long life, even if the sealing surface is damaged, only need Replace the vulnerable parts, you can continue to use.
The principle of selection of needle valve
1, low-temperature medium piping systems and devices, should use the valve with the low-temperature needle valve.
2, the refining unit of the catalytic cracking unit piping system, the choice of lift rod type needle valve.
3, the chemical system of acid and alkali and other corrosive media devices and piping systems, should use austenitic stainless steel, PTFE for the valve seat seal all stainless steel needle valve.
4, metallurgical systems, power systems, petrochemical plants, urban heating systems in the high-temperature medium of the pipeline system or device, the choice of metal-to-metal sealing needle valve.
5, the need for flow adjustment, the choice of worm gear drive, pneumatic or electric with V-shaped opening adjustment needle valve.
6, oil, natural gas pipeline, need to clean the pipeline, but also need to be buried in the ground, the choice of full diameter, all-welded structure of the needle valve; buried in the ground, select the full diameter welding connection or flange connection The ball valve.
7, refined oil pipeline and storage equipment, the choice of flange connected needle valve.
8, the city gas and natural gas pipeline, the choice of flange connection and internal thread connected needle valve.
9, the metallurgical system in the oxygen pipeline system, should be selected after a strict degreasing treatment, flange connection needle valve.
Detailed technical parameters or other product parameters can contact with the Division I.
Needle valve works
Needle valve: instrument measuring pipeline system is an important part of the main cut valve and ball valve, its function is to open or cut off the pipeline with.
The needle valve has the advantages of easy installation and disassembly, quick connection, good protection against fire, explosion resistance and pressure resistance, good sealing performance, etc. It is an advanced connection way valve in power station, oil refining, chemical device and instrument measuring pipeline The
Needle valve seal is good, long life, even if the sealing surface damage, only need to replace the vulnerable parts, you can continue to use.
When installing the needle valve, make the flow of the media in the same direction as the arrow on the valve body. In the case of
Body Material: Body Material: cast iron, cast steel, stainless steel, forged steel, chrome molybdenum steel, chrome molybdenum vanadium steel
Stem material: stainless steel
Working pressure: 1.0-50MPA
Working temperature: - 20 ℃ ~ + 440 ℃ -70 ℃ ~ -240 ℃ ≤540 ℃ ≤570 ℃
Valve diameter: DN15-DN100
Connection: Connection: flange, internal thread, needle valve external thread, welding, card sets
Drive: manual,
