Gate Valve: Gate valve ubedo valve ma tiyo ku gate (gate plate) mi wotho iwi dhugola. Jutiyo kudu pol kare i pipelines pi poko kin piny, niwacu, oyabere nyo cego. Pol kare, gate valves epe pi yub pa pii. Gicopo tiyo kudu pi piny ma ngic man ma tek man ma tek, nimakere ku piny ma juyubu ku valve.
Ento, gate valves pol kare jutiyu kudu ngo i pipelines ma tingo slurry nyo piny ma rom kudu.
Ber:
Gwoko pii ma nok.
Mitu torque ma nok pi yabo man cego.
Ecopu tiyo kudu i yore ario mi pii, ma weko pii mol i yore ario zoo.
Ka eyabere, kabedo ma juketho i iye piny ma juketho i iye piny ma juketho i iye piny ma juketho i ie piny ma juketho i ie piny ma juketho i ie piny ma juketho i ie piny ma juketho i ie globe valves.
Kite ma yot ku yore mi yubu piny maber.
Bor pa gedo ma nok.
Peko:
Dimensions madongo man kabedo mi ketho piny mitire.
Friction man wear ma malo ikind piny ma juketho i iye i saa mi yabo man mi cego, asaga i kare ma piny lyeth.
Gate valves pol kare gitiye ku kabedo aryo ma juketho i iye, ma copo medo peko i tic, poko, man gwoko.
Saa mabor mi yabo man mi cego.
Butterfly Valve: Butterfly valve ubedo valve ma tiyo ku piny ma juku ma calu disc ma loko 90 degrees pi yabo, cego, man jwigo mol pa pii.
Ber:
Kite ma yot, dit, yot, man tiyo ku piny manok, ma weko etiye ber pi valve madongo.
Yabu man cego nyathotho ku kero ma nok mi pii.
Ecopu tiyo ku jam piny ma ucungo iwi piny ma tek man ecopu tiyo kudu pi jam piny ma nya nya man ma nya nya malubiri ku tego pa piny ma jugwoko.
Ber pi yabo, cego, man ketho cik i yore mi yamo man mi kwanyo buru. Jutiyo kudu lee i tic mi cuma, tic ma yot, kero, man yore mi petrochemical pi pipelines pa gas man pii.
Peko:
Kite ma pii mol kudu nok; ka valve oyabere ku 30%, rwom pa mol bi kadho 95%.
Eromo ngo pi pipeline ma lyethu man ma tek tek pi peko mi gedo man piny ma jutiyo kudu pi umu. Pol kare, etiwu i lyethu ma piny pa 300°C man PN40 nyo piny.
Tic mi gwoko piny ma ber ungo ka juporo ku ball valves man globe valves, ento eber ungo pi tic ma mitu ketho piny ma tek.
Ball Valve: Ball valve uai kud i plug valve, man piny ma juketho i iye ubedo sphere ma loko 90 degrees ikum axis pavalvestem ni nwangu yabo man cego. Ball valve jutiyo kudu pol kare i pipelines pi cego, poko, man loko yo pa pii. Ball valves ku V-shaped openings de gitiye ku copo mi jwigo pii maber.
Ber:
Pek pa pii ma nok (ma romo zero).
Tiyu maber i piny ma nyayu lyethu man pii ma lyethu nya yot ungo pi mako ngo i saa mi tic (labongo lubrication).
Nwangu cego maber ikind rwom matung tung pa pressure man temperature.
Yabu man cego pio pio, ku udi moko ma tiye ku kare mi yabo/cego ma nok ma romo 0.05 ku 0.1 seconds, ber pi tic ma timo tic kende kende i kom ma jube pimo ma epe ku peko ikare mi tic.
Kethu piny kende kende i kabedo mi dhu cula ku piny ma juku kudu mupira.
Sealing maber iwi thenge ario zo pa piny ma tiyo kudu.
Ungo nyai pa piny ma jugwoko kud i piny ma tiyo pio pio kani oyabe nyo cego.
Kite ma yot man ma yot, ma weko etiye kit ma ber pa valve pi jam tic ma lyethu nok.
Kum valve ma rwate, asaga in valve body ma welded, ecopu ciro peko ma aa kud i paip.
Piny ma cego copo ciro tung tung pa pressure i saa mi cego. Ball valves ma juyiko maber jucopo yiko piny, mi neno nia piny ma iye kud unyothere, ku kwo ma romo oro 30, ma weko gibedo ber pi pipelines mi oil ku gas.
Peko:
Piny ma pire tek mi juku ball valve ubedo polytetrafluoroethylene (PTFE), ma epe ku kemikol zo man etiye ku kite ma tung tung calu ve friction coefficient ma nok, tic maber, kwo ma tek, bedo maber i kabedo ma ngic, man tic maber mi juku.
Ento, kite ma PTFE nen kudu, ikinde utiye ku rwom ma malu mi nyai, bedo moth i kum pii ma ngic, man bedo moth ma ber ongo, mitu yub pa seat seals ubed malubiri ku kite eni. Pieno, ka piny ma juketho i iye ubedo matek, gen pa cinge doko tek.
Bende, PTFE utiye ku rwom ma piny mi juku lyethu man ecopu tiyo kudu piny pa 180°C kende. I ngei lyethu eni, piny ma juku kudu bidoko tidi. Ka waparu pi tic pi kare malac, pol kare jutiyo kudu ungo malu pa 120°C.
Tic pare mi gwoko piny utiye piny uloyu ikum globe valve, asaga pneumatic valves (nyoke electric valves).
Globe Valve: Etiye valve kama piny ma cego (valve disc) wotho i dyere pa kom. Aloka loka pa dhugola mi kom utiye marom ku wotho pa valve disc. Ni kum wotho ma nok mi yabo man cego pa kit valve eni man tic pare maber mi juku, man bende bedo ber pa aloka loka pa wang kom man wotho pa valve disc, eber mandha pi yub pa pii. Pieno, kit valve eni jutiyo kudu pol kare pi juku, yub, man dwoko piny.
Ber:
I kare mi yabo man cego, tego pa ngwec ikind valve disc ku sealing surface pa valve utiye nok uloyu pa gate valve, ma weko ebedo tek ni rwinyo.
Bor pa dhugola ubedo 1/4 kende pa dhugola mi kom, ma weko ebedo nok uloyu ikum valve mi dhugola.
Pol kare, kabedo acel kende ma juketho i kum valve man valve disc, ma weko bedo yot ni yubu man ni yiko.
Etiye ku kero mi juku lyethu ma malu pilembe piny ma jucwalo ubedo ku asbestos ku graphite. Globe valves jutiyu kudu pol kare pi steam valves.
Peko:
Ni lembe mi aloka loka mi yo ma mol pa pii kud i valve, rwom ma piny pa mol pa globe valve utiye malo uloyu pa kit valve mange.
Ni kadhu kud i stroke ma bor, ngwec mi yabo ubedo yot ka juporo ku ball valve.
Plug Valve: Etiye valve ma lokore ku piny ma cego i ayi pa cylinder nyo cone plug. Valve plug iwi plug valve juwire 90 degrees mi mako nyo poko kind valve body, mi nwangu yabo nyo cego pa valve. Kite pa valve plug copo bedu cylindrical nyo conical. Lembe pare urombo ku pa ball valve, ma juyubu ku plug valve man jutiyo kudu lee i tic mi oilfields man petrochemical.
Safety Valve: Etiyo calu piny ma gwoko ikum pii ma tek ikum yei, jam tic, nyo pipelines. Ka kero ma ni i iye pa jam tic, yei, nyo pipeline ukadhu wel ma juyiyu, valve ne oyabere kende kende mi wodhu kero pare zo, ma juku kero ne umedire. Ka pressure udok piny i wel ma juketho, valve ucikere ni cego kende pio pio pi gwoko tic maber pa jam tic, yei, nyo pipeline.
Steam Trap: I tero pa steam, yamu ma jukubo, man piny mukende, pii ma juyubu. Mi neno nia jam tic ne timo tic maber man maber, umitu juwodh piny ma kony man ma rac eni i kare ma mitire pi gwoko tic man tic pa jam tic eni. Etiye ku tic ma e: (1) Ecopu wodhu pii ma wok pio pio. (2) Egwoko pii ma mol kud i pii. (3) Ewodho.
Pressure Reducing Valve: Etiye valve ma dwoko piny kero mi donjo ni rwom ma mitere ni kadhu kud i aloka loka man ecungo iwi tego pa piny ne gire ni gwoko kero mi wok woko.
Check Valve: Man de julwonge ni non-return valve, backflow preventer, back pressure valve, nyo one-way valve. Valve eni gi yabere man gi cego gire ku tego ma wok kud i mol pa pii i pipeline, ma weko gibedo kit valve ma timo giri. Check valves jutiyu kudu i pipeline systems man tic migi madit utiye mi juku dwoko piny pa pii, juku dwoko cen pa pumps man driving motors, man weko container media. Check valves copo bedu bende ikum pipelines ma mio pii ni piny ma konyogi kama kero copo medere malu ikum kero pa piny. Jucopo poko gi i dul ma lokore (ma lokore nimakere ku rwom pa piny) man kit ma tingo piny (wotho malube ku axis).
Saa mi kyewo: Jun-03-2023
