I-Taboo 21

Indawo yokufaka ayinayo indawo yokusebenza

Izinyathelo: Ngisho noma ukufakwa kuyinselele ekuqaleni, kubalulekile ukucabangela umsebenzi wesikhathi eside womqhubi ngenkathi ebeka i-ivalvuukuze kusebenze. Ukuze kuvulwe futhi kuvalweivalvuKulula, kuyalulekwa ukubeka isondo lesandla levalvu ukuze lihambisane nesifuba (ngokuvamile amamitha angu-1.2 ukusuka phansi kwegumbi lokuhlinza). Ukuze kuvinjelwe ukusebenza okungekuhle, isondo lesandla levalvu yokufika kufanele libheke phezulu futhi lingathambeki. Amavalvu omshini wodonga nezinye izingxenye kufanele avumele isikhala esanele sokuba umqhubi ame. Kuyingozi kakhulu ukusebenza esibhakabhakeni, ikakhulukazi uma usebenzisa i-acid-base, imidiya eyingozi, njll.

I-Taboo 22

Amavalvu enziwe ngezinto ezibuthakathaka

Izinyathelo: Uma ufaka futhi wakha, qaphela futhi ugweme ukushaya amavalvu ezinto ezibuthakathaka. Hlola ivalvu, imininingwane, namamodeli ngaphambi kokufaka, bese ubheka noma yimuphi umonakalo, ikakhulukazi esiqwini sevalvu. Isiqu sevalvu cishe singase sigobe ngesikhathi sokuthunyelwa, ngakho-ke siphendule izikhathi ezimbalwa ukuze uhlole ukuthi siyagoba yini. Hlanza ivalvu nanoma yikuphi ukungcola. Ukuze ugweme ukulimaza isondo lesandla noma isiqu sevalvu lapho uphakamisa ivalvu, intambo kufanele iboshwe ku-flange esikhundleni sanoma iyiphi yalezi zingxenye. Ukuxhumeka kwephayiphi yevalvu kudinga ukuhlanzwa. Ukuze ususe ama-iron oxide chips, isihlabathi sodaka, i-welding slag, nezinye izinto eziningi, sebenzisa umoya ocindezelwe. Izinhlayiya ezinkulu zezinhlobo ezahlukene, ezifana ne-welding slag, zingavimba amavalvu amancane futhi zenze angasebenzi ngaphezu kokuklwebha kalula ubuso bokuvala bevalvu. Ukuze kuvinjelwe ukwakheka kwevalvu nokuphazamiseka kokugeleza kwe-medium, ukupakisha kokuvala (i-line hemp plus lead oil noma i-PTFE raw material tape) kufanele kusongwe ngentambo yepayipi ngaphambi kokufaka ivalvu yesikulufu. Qiniseka ukuthi uqinisa amabhawodi ngokulinganayo nangokulinganayo ngenkathi ufaka amavalvu acwebezelayo. Ukuze ugweme ukuthi ivalvu ingakhiqizi ingcindezi enkulu noma ingase iqhekeke, i-flange yepayipi kanye ne-flange yevalvu kudingeka zihambisane futhi zibe nesikhala esifanele. Izinto ezithambile namavalvu anamandla aphansi adinga ukunakwa okukhethekile. Amavalvu acwebezelwe ngamapayipi kufanele acwebezelwe ngamabala kuqala, kulandelwe ukuvulwa okuphelele kwezingxenye zokuvala, bese ekugcineni, ukucwebezela okufile.

I-Taboo 23

Ivalvu ayinazo izindlela zokugcina ukushisa kanye nokugcina ubanda

Izinyathelo: Amanye ama-valve nawo ayadingeka ukuthi afake izici zokuvikela zangaphandle zokulondolozwa kokushisa nokubanda. Ngezinye izikhathi ipayipi lomusi oshisayo liyangezwa kungqimba lokufakwa kokushisa. Uhlobo lwe-valve okufanele igcinwe ifudumele noma ibanda luncike ezidingweni zokukhiqiza. Ngokombono, ukugcinwa kokushisa noma ngisho nokulandelela ukushisa kuyadingeka uma indawo ephakathi kwe-valve iphola kakhulu, okuzonciphisa ukusebenza kahle kokukhiqiza noma kubangele ukuthi i-valve iqine. Ngokufanayo, lapho i-valve ivezwa, okuyinto embi ekukhiqizweni noma eholela eqhweni nakwezinye izinto ezingathandeki, i-valve idinga ukugcinwa ibanda. Izinto zokufakwa kokushisa ezibandayo zifaka phakathi i-cork, i-perlite, i-foam, ipulasitiki, i-diatomaceous earth, i-asbestos, i-slag wool, i-glass wool, i-perlite, i-diatomaceous earth, njll.

I-Taboo 24

Isicupho sesitimu asifakiwe

Izilinganiso: Amanye amavalvu anezinsimbi kanye nama-bypasses ngaphezu kwezici zokuvikela eziyisisekelo. Ukuze kube lula ukulungisa isicupho, kufakwe i-bypass. Kunezinye amavalvu afakwe i-bypass. Isimo, ukubaluleka, kanye nezidingo zokukhiqiza zevalvu kunquma ukuthi i-bypass kufanele ifakwe yini.

I-Taboo 25

Ukupakisha akushintshwa njalo

Izinyathelo: Amanye amaphakheji amavalvu asesitokweni adinga ukushintshwa ngoba awasebenzi kahle noma awahambisani ne-medium esetshenziswayo. Ibhokisi lokugxusha lihlala ligcwele ukupakisha okuvamile futhi ivalvu ivezwa ezinkulungwaneni zemidiya ehlukahlukene, noma kunjalo, lapho ivalvu isebenza, ukupakisha kumele kwenziwe ngokwezifiso kwemidiya. Cindezela iphakheji endaweni yayo ngokuhambahamba ngezindilinga. Umthungo wendilinga ngayinye kufanele ube ngama-degree angu-45, kanti imithungo yemibuthano kufanele ibe ngama-degree angu-180. Ingxenye engezansi ye-gland manje kufanele icindezelwe ekujuleni okufanele kwegumbi lokupakisha, okuvame ukuba yi-10-20% yokujula okuphelele kwegumbi lokupakisha. Ukuphakama kokupakisha kufanele kucabangele lokhu. I-engeli yomthungo yamavalvu anemigomo eqinile ingu-30 degrees. Imithungo yendilinga ihluka ngama-degree angu-120 komunye nomunye. Izindandatho ezintathu ze-O-raber (irabha yemvelo engamelani ne-alkali ebuthakathaka ngaphansi kwama-degree Celsius angu-60, irabha ye-nitrile engamelani nemikhiqizo kawoyela ngaphansi kwama-degree Celsius angu-80, kanye nerabha ye-fluorine engamelana nemidiya ehlukahlukene ebolile ngaphansi kwama-degree Celsius angu-150) nazo zingasetshenziswa, kuye ngezimo, ngaphezu kwezigcwalisi ezishiwo ngenhla. Izindandatho zesitsha se-nylon (ezingamelani ne-ammonia kanye ne-alkali ngaphansi kwama-degree Celsius angu-120), izindandatho ze-polytetrafluoroethylene ezilaminethiwe (ezingamelani nemidiya ebolile eqinile ngaphansi kwama-degree Celsius angu-200), kanye nezinye izigcwalisi ezibunjiwe. Songa ungqimba lwetheyiphu ye-polytetrafluoroethylene eluhlaza ngaphandle kwephakheji evamile ye-asbestos ukuze uqinise ukuvalwa nokunciphisa ukuwohloka kwesiqu se-valve ngenxa yesenzo se-electrochemical. Ukuze ugcine indawo ilingana futhi uyigcine ingafi kakhulu, jika isiqu se-valve ngenkathi ucindezela ukupakisha. Ungatsheki ngenkathi uqinisa i-gland ngomzamo oqhubekayo.