Ufaka umgca omtsha wamanzi kwaye uthatha ivalvu yePVC. Kodwa ukuba awuyazi imida yoxinzelelo lwayo, usengozini yokuqhuma okukhulu, izikhukula ezinkulu, kunye nexesha elibizayo lokungasebenzi kwenkqubo.

Ivalvu yebhola ye-PVC yeShedyuli 40 eqhelekileyo idla ngokulinganiselwa ukuba ikwazi ukusingatha ubuninzi be-150 PSI (iiponti nge-Square Inch) kwi-73°F (23°C). Olu xinzelelo luyehla kakhulu njengoko ubushushu bamanzi busanda, ngoko ke kubalulekile ukujonga iinkcukacha zomenzi.

Elo nani, i-150 PSI, yimpendulo elula. Kodwa impendulo yokwenyani iyinkimbinkimbi ngakumbi, kwaye ukuyiqonda kubalulekile ekwakheni inkqubo ekhuselekileyo nethembekileyo. Ndihlala ndixoxa ngale nto noBudi, umphathi wokuthenga e-Indonesia. Uqeqesha iqela lakhe ukuba libuze abathengi kungekuphela nje ukuba “luluphi uxinzelelo olufunekayo?” kodwa nokuba “lingakanani iqondo lobushushu?” kunye nokuthi “uyimisa njani indlela ehamba ngayo?” Ipompo ingenza uxinzelelo luphakame kakhulu kunomndilili wenkqubo. Ivalvu yinxalenye nje yenkqubo yonke. Ukwazi ukuba ingakanani uxinzelelo enokuluphatha akupheleli nje ekufundeni inombolo; kumalunga nokuqonda indlela inkqubo yakho eza kuziphatha ngayo kwihlabathi lokwenyani.

Ingakanani inqanaba loxinzelelo lwevalvu yePVC?

Ubona u-“150 PSI” eprintwe kwivalvu, kodwa oko kuthetha ukuthini ngokwenene? ​​Ukuyisebenzisa kwiimeko ezingalunganga kunokubangela ukuba ingasebenzi, nokuba uxinzelelo lubonakala luphantsi.

Umlinganiselo woxinzelelo lwevalvu yePVC, edla ngokuba yi-150 PSI kwiShedyuli 40, lolona xinzelelo lwayo luphezulu lokusebenza olukhuselekileyo kubushushu begumbi. Njengoko ubushushu bunyuka, iPVC iyathamba kwaye amandla ayo okuphatha uxinzelelo ehla kakhulu.

Cinga ngomlinganiselo woxinzelelo njengamandla alo kwimeko efanelekileyo. Kubushushu begumbi obukhululekileyo obuyi-73°F (23°C), ivalvu yePVC emhlophe eqhelekileyo iqinile kwaye iqinile.I-PVC yi-thermoplastic, oko kuthetha ukuba iyathamba xa ishushu. Le yeyona ngcamango ibalulekileyo ekufuneka uyiqonde: kufuneka "unciphise" uxinzelelo xa kushushu kakhulu. Umzekelo, kwi-100°F (38°C), loo valve ye-150 PSI inokuba ikhuselekile ukuya kuthi ga kwi-110 PSI. Xa ufika kwi-140°F (60°C), umlinganiselo wayo ophezulu uhlile waya kuthi ga kwi-30 PSI. Yingakho i-PVC eqhelekileyo isetyenziselwa kuphela imigca yamanzi abandayo. Ukuba kushushu kakhulu okanye kushushu kancinci, ungajongaIshedyuli 80 yePVC(ngesiqhelo ingwevu emnyama), eneendonga ezityebileyo kunye nomlinganiselo ophezulu woxinzelelo lokuqala.

Uvavanyo loxinzelelo lwePVC xa kuthelekiswa nobushushu

Ingakanani imida yoxinzelelo lwevalvu yebhola?

Uyazi ukuba uxinzelelo oluzinzileyo lwenkqubo yakho lungaphantsi komda ngokukhuselekileyo. Kodwa ukuvalwa kwevalvu ngequbuliso kunokubangela ukunyuka koxinzelelo oludlula loo mda, okubangela ukuqhekeka kwangoko.

Umda woxinzelelo ochaziweyo ngowoxinzelelo olungashukumiyo, olungelulo olothusayo. Lo mda awujongi amandla aguqukayo afanaisando samanzi, ukunyuka koxinzelelo ngequbuliso okunokwaphula ngokulula ivalvu elinganiswe ukuba inamandla aphezulu kakhulu.

Ihamile yamanzi ngumbulali othuleyo wezinto zombhobho. Khawuthelekelele umbhobho omde ozele ngamanzi uhamba ngokukhawuleza. Xa uvala ivalvu, onke loo manzi ashukumayo kufuneka ame ngoko nangoko. Umfutho udala i-shockwave enkulu ebuyela umva ngephayiphu. Olu xinzelelo lunokuba luphindwe kahlanu ukuya kwi-10 kunoxinzelelo oluqhelekileyo lwenkqubo. Inkqubo esebenza kwi-60 PSI inokuhlangabezana noxinzelelo lwe-600 PSI okwethutyana. Akukho valivu yebhola yePVC eqhelekileyo enokumelana noko. Ndisoloko ndixelela uBudi ukuba akhumbuze abathengi bakhe abakontraka ngale nto. Xa ivalvu isilela, kulula ukutyhola imveliso. Kodwa rhoqo, ingxaki luyilo lwenkqubo olungabalulekanga kwihamile yamanzi. Eyona ndlela ilungileyo yokuthintela kukuvala iivalvu kancinci. Nokuba unevalivu yebhola ejika ikota, ukusebenzisa isiphatho kakuhle kwimizuzwana emibini endaweni yokusivala kwenza umahluko omkhulu.

Ingakanani i-PVC enokumelana noxinzelelo?

Ukhethe ivalvu echanekileyo, kodwa kuthekani ngombhobho? Inkqubo yakho inamandla kuphela xa iqhagamshelo layo libuthathaka, kwaye ukusilela kombhobho kubi njengokusilela kwevalvu.

Ubungakanani boxinzelelo olunokumelana ne-PVC buxhomekeke "kwishedyuli" okanye ubukhulu bodonga. Umbhobho we-PVC oqhelekileyo we-Schedule 40 unemilinganiselo ephantsi yoxinzelelo kunembhobho we-Schedule 80 onodonga olutyebileyo nolusebenza kakhulu kwimizi-mveliso.

Yimpazamo eqhelekileyo ukugxila kuphela kumlinganiselo wevalvu. Kufuneka ulungelelanise izinto zakho. Umbhobho weSchedule 40 weesentimitha ezi-2, umbhobho omhlophe oqhelekileyo owubonayo kuyo yonke indawo, uhlala ulinganiswe malunga ne-140 PSI. Umbhobho weSchedule 80 weesentimitha ezi-2, onodonga olutyebileyo kwaye uhlala ungwevu omnyama, ulinganiswe ngaphezu kwe-200 PSI. Awunakunyusa umthamo woxinzelelo lwenkqubo yakho ngokusebenzisa ivalvu enamandla. Ukuba ufaka ivalvu yeSchedule 80 (elinganiswe yi-240 PSI) kumbhobho weSchedule 40 (elinganiswe yi-140 PSI), uxinzelelo oluphezulu olukhuselekileyo lwenkqubo yakho luseyi-140 PSI kuphela. Umbhobho uba likhonkco elibuthathaka. Kuyo nayiphi na inkqubo, kufuneka uchonge umlinganiselo woxinzelelo lwenxalenye nganye—iipayipi, izixhobo, kunye neevalvu—kwaye uyile inkqubo yakho malunga nenxalenye elinganiswe kancinci.

Uthelekiso lweShedyuli yePipe (Umzekelo: iPVC ye-intshi ezi-2)

Ngaba iivalvu zebhola zePVC zilungile?

Ujonga ivalvu yeplastiki ekhaphukhaphu uze ucinge ukuba ivakala ingabizi. Ngaba ungathemba ngokwenene ukuba le nxalenye ingabizi kakhulu inokuba yinxalenye ethembekileyo kwinkqubo yakho yamanzi ebalulekileyo?

Ewe, umgangatho ophezuluIivalvu zebhola zePVCZilunge kakhulu kwinjongo yazo. Ixabiso lazo alikho kumandla angaqhelekanga, kodwa kukungakhuseleki kwazo ngokupheleleyo ekungcoleni, nto leyo eyenza zithembeke ngakumbi kunesinyithi kwiindawo ezininzi.

Ingcamango "yokuba itshiphu" ivela ekuthelekiseni i-PVC nesinyithi. Kodwa oku akunantsingiselo. Kwiindlela ezininzi zokusetyenziswa kwamanzi, ingakumbi kwezolimo, ekukhuliseni amachibi, okanye kwiinkqubo zamachibi, ukugqwala yeyona nto iphambili yokusilela. Ivalvu yobhedu okanye yesinyithi iya kugqwala kwaye ibambe ngokuhamba kwexesha. Ivalvu yePVC esemgangathweni, eyenziwe nge-resin eyi-100% eyi-virgin enezihlalo ze-PTFE ezigudileyo kunye nee-O-rings ezingafunekiyo, ayizukusebenza. Iya kusebenza kakuhle iminyaka emininzi kwindawo enokutshabalalisa isinyithi. IBudi iphumelela kubathengi abangathandabuzekiyo ngokutshintsha ifreyimu yombuzo. Umbuzo awuthi "ingaba iplastiki ilungile ngokwaneleyo?" Umbuzo ngulo "ingaba isinyithi singasinda kulo msebenzi?" Ukulawula amanzi abandayo, ngakumbi apho kukho iikhemikhali okanye ityuwa, ivalvu yePVC eyenziwe kakuhle ayisiyondlela ilungileyo nje kuphela; lukhetho olukrelekrele, oluthembekileyo, nolunexabiso eliphantsi ixesha elide.

Isiphelo

Ivalvu yebhola yePVC inokusingatha i-150 PSI kubushushu begumbi. Ixabiso layo lokwenyani lixhomekeke ekumelaneni nokugqwala, kodwa soloko ujongana nobushushu kunye nehammer yamanzi ukuze kubekho inkqubo ekhuselekileyo nehlala ixesha elide.