Ultrahigh pressure needle type pneumatic valve selection and introduction

ultrahigh pressure needle type pneumatic valve overview
ultrahigh pressure type pneumatic valve is an important part of the meter in the piping system, mainly by the pneumatic valve and ball valve, its function is used as open or cut off the pipeline path. Needle type pneumatic valve pneumatic valve core is a very sharp cone, like needle inserted into the pneumatic valve seat, hence the name. Needle type pneumatic valve has easy installation and disassembly, fastening connections, is conducive to fire, explosion, and the advantages of high compression capacity, sealed performance is good, is power stations, oil refining, chemical industry and instrument measuring an advanced pipeline connection mode of pneumatic valve. Needle type pneumatic valve has good sealing and long service life, even if the sealing surface damage, also need to replace quick-wear part only, can continue to use.
ultrahigh pressure needle type pneumatic valve selection principle:
and low temperature medium pipeline system and device, appropriate chooses and cryogenic needle type pneumatic valve pneumatic valve cover.
and refining unit of catalytic cracking unit of piping system, can choose lifting lever needle type pneumatic valve.
and chemical systems, such as acid and alkali corrosive medium device and pipeline system, appropriate chooses of austenitic stainless steel, teflon for pneumatic type pneumatic valve seat sealing of all stainless steel needle.
, metallurgy system, power system, petrochemical plant, city heating system of the pipeline system of high temperature medium or device, can choose metal sealing needle type pneumatic valve.
and refined oil transmission pipeline and storage equipment, selection of welding connection pin type pneumatic valve.
the pipeline, city gas and natural gas, the selection of flange connection and inner threaded needle type pneumatic valve.
, oxygen pipeline system, the strict degreasing process.
ultrahigh pressure needle type pneumatic valve installation notice:
, installation position and height, import and export direction must comply with the design requirements, pay attention to the medium flow direction should be consistent with the pneumatic valve body the direction of the arrow, the connection should be firmly connected.
a visual inspection must be conducted before installation, pneumatic valve, pneumatic valve nameplate shall comply with the terms of the current national standard.
and pressure is greater than to work. MPa and pneumatic valve with the function of cutting on ZhuGanGuan, strength and strict performance test should be done before the installation, qualified rear must use.
, strength test, the test pressure for the nominal pressure. Times, duration of not less than min, pneumatic valve shell, packing should be no leakage as qualified.
, leak test, the test pressure for the nominal pressure. Times; The duration of the test in accordance with the provisions of the national standard.