Ngaba uzibuza ukuba ivalvu yePVC ingakwazi na ukumelana noxinzelelo lwenkqubo yakho? Impazamo inokukhokelela ekuqhumeni okubizayo kunye nexesha lokungasebenzi. Ukwazi umda woxinzelelo ngqo linyathelo lokuqala lokufakelwa ngokukhuselekileyo.

Uninzi lweevalvu zebhola zePVC ezisemgangathweni zilinganiswe ngoxinzelelo oluphezulu lwe-150 PSI (iiponti nge-intshi yesikwere) kubushushu obuyi-73°F (23°C). Olu vavanyo luyehla njengoko ubungakanani bombhobho kunye nobushushu bokusebenza bunyuka, ngoko soloko ujonga iinkcukacha zomenzi.

Ndikhumbula incoko noBudi, umphathi wokuthenga eIndonesia othenga amawaka eevalvu kuthi. Wanditsalela umnxeba ngenye imini, ekhathazekile. Omnye wabathengi bakhe, owayesebenza kwikontrakta, wayenevalvu engasebenzi kakuhle xa kwakufakelwa enye. Udumo lwakhe lwalusengozini. Xa sasiphanda, safumanisa ukuba inkqubo yayisebenza kakuhle kancinci.ubushushukunesiqhelo, okwaneleyo ukwehlisa ukusebenza kwevalvuuvavanyo loxinzelelongaphantsi koko bekufunwa yinkqubo. Yayiyinto elula ukuyiphosa kwelokulibala, kodwa yagxininisa ingongoma ebalulekileyo: inani eliprintiweyo kwivalvu alilo ibali liphela. Ukuqonda ubudlelwane phakathi koxinzelelo, ubushushu, kunye nobukhulu kubalulekile kuye nabani na ofumana okanye ofaka ezi zinto.

Ingakanani uxinzelelo olunokuphathwa yivalvu yebhola yePVC?

Ubona umlinganiselo woxinzelelo, kodwa awuqinisekanga ukuba luyasebenza na kwimeko yakho ethile. Ukucinga ukuba inani elinye lihambelana nazo zonke iisayizi kunye namaqondo obushushu kunokukhokelela ekungaphumelelini okungalindelekanga kunye nokuvuza.

Ivalvu yebhola yePVC idla ngokuphatha i-150 PSI, kodwa le yiCold Working Pressure (CWP). Uxinzelelo lokwenyani enokuliphatha luyehla kakhulu njengoko ubushushu bolwelo bunyuka. Umzekelo, kwi-140°F (60°C), umlinganiselo woxinzelelo unganqunyulwa phakathi.

Into ebalulekileyo ekufuneka uyiqonde apha yile nto siyibiza ngokuba yi-“ijika lokunciphisa uxinzelelo.” Ligama lobuchwephesha elithetha ingcamango elula: njengoko i-PVC isiya ifudumala, iya ithamba kwaye ibuthathaka. Ngenxa yoku, kufuneka usebenzise uxinzelelo oluncinci ukuze uyigcine ikhuselekile. Cinga ngebhotile yeplastiki. Xa ibanda, iyaqina kakhulu. Ukuba uyishiya emotweni eshushu, iyathamba kwaye ithambile. Aivalvu yePVCisebenza ngendlela efanayo. Abavelisi banikezela ngeetshathi ezikubonisa ukuba ingakanani na ingcinezelo enokusingathwa yivalvu kumaqondo obushushu ahlukeneyo. Njengomthetho, xa unyuka nge-10°F ngaphezu kobushushu obuqhelekileyo (73°F), kufuneka unciphise uxinzelelo oluphezulu oluvumelekileyo malunga ne-10-15%. Yingakho ukufumana kumvelisi obonelela ngokucacileyoidatha yobugcisaibaluleke kakhulu kwiingcali ezifana noBudi.

Ukuqonda ulwalamano phakathi kobushushu kunye nobungakanani

Ngaphezu koko, iivalvu ezinkulu zobubanzi zihlala zinezinga loxinzelelo eliphantsi kunezincinci, nokuba zikwizinga lobushushu elifanayo. Oku kungenxa yefiziksi; indawo enkulu yomphezulu webhola kunye nomzimba wevalvu kuthetha ukuba amandla apheleleyo asetyenziswa luxinzelelo makhulu kakhulu. Soloko ujonga izinga elithile lobungakanani obuthile obuthengayo.

Ingakanani imida yoxinzelelo lwevalvu yebhola?

Uyazi umda woxinzelelo lwe-PVC, kodwa oko kuthelekiswa njani nezinye iindlela? Ukukhetha izinto ezingafanelekanga kumsebenzi oxinezelekileyo kunokuba yimpazamo ebiza kakhulu, okanye enobungozi.

Umda woxinzelelo lwevalvu yebhola uxhomekeke ngokupheleleyo kwizinto ezisetyenziswayo. Iivalvu zePVC zezeenkqubo zoxinzelelo oluphantsi (malunga ne-150 PSI), iivalvu zebronze zezoxinzelelo oluphakathi (ukuya kuthi ga kwi-600 PSI), kwaye iivalvu zentsimbi engagqwaliyo zezokusetyenziswa koxinzelelo oluphezulu, ezidla ngokudlula i-1000 PSI.

Le yincoko endihlala ndinayo nabaphathi bokuthenga abafana noBudi. Nangona ishishini lakhe eliphambili likwi-PVC, abathengi bakhe ngamanye amaxesha banemisebenzi ekhethekileyo efunaukusebenza okuphezuluUkuqonda yonke imakethi kumnceda ukuba akhonze abathengi bakhe ngcono. Akathengisi nje imveliso; unika isisombululo. Ukuba umakhi usebenza kumgca wokunkcenkceshela oqhelekileyo, i-PVC yeyona ifanelekileyo,ukhetho olungabizi kakhuluKodwa ukuba loo kontraka mnye usebenza kwisikhululo samanzi esinoxinzelelo oluphezulu okanye kwinkqubo enamaqondo obushushu aphezulu, uBudi uyazi ukuba angacebisa enye indlela yesinyithi. Olu lwazi lummisa njengengcali kwaye lwakha ukuthembana kwexesha elide. Asikuko ukuthengisa ivalvu ebiza kakhulu, kodwakuneneivalvu yomsebenzi.

Ukuthelekisa Izixhobo zeValve yeBhola eqhelekileyo

Ukhetho olufanelekileyo luhlala luxhomekeke kwiimfuno zokusetyenziswa: uxinzelelo, ubushushu, kunye nohlobo lolwelo olulawulwayo.

Njengoko ubona, iintsimbi ezifana nobhedu kunye nentsimbi engatyiwayo zinamandla okutsalwa aphezulu kunePVC. La mandla angaphakathi azivumela ukuba zithwale uxinzelelo oluphezulu ngaphandle komngcipheko wokuqhuma. Nangona zibiza kakhulu, zilukhetho olukhuselekileyo noluyimfuneko xa uxinzelelo lwenkqubo ludlula imida yePVC.

Ingakanani uxinzelelo lomoya oluphezulu kwi-PVC?

Usenokulingeka ukuba usebenzise i-PVC engabizi kakhulu kwintambo yomoya ecinezelweyo. Le yingcinga eqhelekileyo kodwa iyingozi kakhulu. Ukungaphumeleli apha akusikuko ukuvuza; kukuqhuma.

Akufuneki usebenzise iivalvu zebhola zePVC okanye imibhobho eqhelekileyo yomoya ocinezelweyo okanye nayiphi na enye igesi. Uxinzelelo lomoya oluphezulu olucetyiswayo yi-zero. Igesi ecinezelweyo igcina amandla amakhulu, kwaye ukuba iPVC ayisebenzi, inokuqhekeka ibe zizixhobo ezibukhali neziyingozi.

Esi sesona silumkiso sibalulekileyo sokhuseleko endisinika amaqabane am, kwaye into endiyigxininisa kwiqela likaBudi ukuze liqeqeshwe. Ingozi ayiqondwa kakuhle ngumntu wonke. Isizathu ngumahluko ophambili phakathi kolwelo kunye neegesi. Ulwelo olufana namanzi aluxinzelelwa. Ukuba umbhobho wePVC obambe amanzi uyaqhekeka, uxinzelelo luyehla ngoko nangoko, kwaye ufumana ukuvuza okanye ukuqhekeka okulula. Nangona kunjalo, igesi ixinzelelwa kakhulu. Ifana nomthombo ogciniweyo. Ukuba umbhobho wePVC obambe umoya oxinzelelweyo uyasilela, onke loo mandla agciniweyo akhutshwa ngaxeshanye, nto leyo ebangela ukuqhuma okukhulu. Umbhobho awuqhekeki nje kuphela; uyaqhekeka. Ndibone iifoto zomonakalo onokubangelwa koku, kwaye ngumngcipheko ongenakuthwalwa mntu.

Ukungaphumeleli koxinzelelo lwe-Hydrostatic vs. Pneumatic

Umngcipheko uvela kuhlobo lwamandla agcinwe kwinkqubo.

• Uxinzelelo lwe-Hydrostatic (Amanzi):Amanzi akacinezeli lula. Xa isitya esiphethe amanzi singaphumeleli, uxinzelelo luyaphela ngoko nangoko. Isiphumo kukuba kuvuza. Amandla aphela ngokukhawuleza nangokukhuselekileyo.
• Uxinzelelo lwe-Pneumatic (Umoya/iGesi):Igesi iyaxinwa, igcina amandla amaninzi anokubakho. Xa isikhongozeli singaphumeleli, la mandla akhutshwa ngokukhawuleza. Ukusilela kuba yintlekele, kungekhona kancinci kancinci. Yiyo loo nto imibutho efana ne-OSHA (Occupational Safety and Health Administration) inemithetho engqongqo echasene nokusetyenziswa kwe-PVC eqhelekileyo kumoya oxinyiweyo.

Kwizicelo zomoya, soloko usebenzisa izixhobo eziyilwe ngokukodwa nezilinganiswe kwiigesi ezixinzelelweyo, ezifana nobhedu, intsimbi, okanye iiplastiki ezikhethekileyo ezenzelwe loo njongo. Ungaze usebenzise i-PVC yomgangatho weplumbing.

Ingakanani inqanaba loxinzelelo lwevalvu yebhola?

Unevalvu esandleni sakho, kodwa kufuneka wazi umlinganiselo wayo ochanekileyo. Ukungawafundi kakuhle okanye ukungawahoyi amamaki emzimbeni kunokukhokelela ekusebenziseni ivalvu engaqwalaselwanga kakuhle kwinkqubo ebalulekileyo.

Umlinganiselo woxinzelelo lixabiso elifakwe ngqo emzimbeni wevalvu yebhola. Ngokwesiqhelo libonisa inani elilandelwa ngu-“PSI” okanye “PN,” elimele uxinzelelo oluphezulu olubandayo (CWP) kubushushu obuqhelekileyo, ngesiqhelo yi-73°F (23°C).

Ndisoloko ndikhuthaza amaqabane ethu ukuba aqeqeshe abasebenzi bawo bempahla yokugcina impahla kunye nabathengisi ukuba bafunde ezi mpawu ngokuchanekileyo. Likhadi lesazisi levalvu. Xa iqela likaBudi likhupha impahla ethunyelweyo, banokuqinisekisa ngoko nangoko ukuba bayifumene.iinkcukacha ezichanekileyo zemvelisoXa abathengisi bakhe bethetha nomqambi, banokukhomba ngokwasemzimbeni umlinganiselo okwivalvu ukuqinisekisa ukuba iyahlangabezana neemfuno zeprojekthi. Eli nyathelo lilula lisusa naluphi na uqikelelo kwaye lithintele iimpazamo ngaphambi kokuba ivalvu ifike kwindawo yomsebenzi. Iimpawu zisithembiso esivela kumenzi malunga nobuchule bokusebenza kwevalvu, kwaye ukuqonda kwazo kubalulekile ekusebenziseni imveliso ngokukhuselekileyo nangokufanelekileyo. Licandelo elincinci elenza umahluko omkhulu ekuqinisekiseniulawulo lomgangatho kulo lonke uthotho lokubonelela.

Indlela Yokufunda Iimpawu

Iivalvu zisebenzisa iikhowudi ezimiselweyo ukwazisa imida yazo. Nazi ezixhaphakileyo oza kuzifumana kwivalvu yebhola yePVC:

Umzekelo, ungabona“150 PSI @ 73°F”Oku kucacile kakhulu: i-150 PSI lolona xinzelelo luphezulu, kodwa kuphela kwi-73°F okanye ngaphantsi kwayo. Ungabona“PN10”Oku kuthetha ukuba ivalvu ilinganiswe ngoxinzelelo oluqhelekileyo lwe-10 Bar. Ekubeni i-1 Bar imalunga ne-14.5 PSI, ivalvu ye-PN10 ilingana nevalvu ye-145 PSI. Soloko ukhangela zombini inani loxinzelelo kunye nalo naluphi na umlinganiselo wobushushu ohambelanayo ukuze ufumane umfanekiso opheleleyo.

Isiphelo

Umda woxinzelelo lwevalvu yebhola yePVC uhlala uyi-150 PSI emanzini, kodwa olu vavanyo luyehla xa ubushushu buphezulu. Okona kubaluleke kakhulu, ungaze usebenzise iPVC kwiinkqubo zomoya ocinezelweyo.