I-Female Threaded Landing Valve inika ukusebenza okuthembekileyo kwiinkqubo zokukhusela umlilo zanamhlanje. Iinjineli ziyathemba uyilo lwayo oluqinileyo kunye nokuhambelana okulula ngamaxesha kaxakeka.Ivalvu yokuHlala yohlobo lweFlange, Ivalvu yokuHlala yeNdlela ezimbinikunyeIvalvu yokuHlala yeAluminiyam yeBrassikwahlangabezana nemigangatho yokhuseleko engqongqo. Abahloli bomlilo bayayivuma le valves ukuba iyathotyelwa imithetho.

• Abacimi-mlilo baxhomekeke kwezi valve ukuze bafumane impendulo ekhawulezileyo kunye nokuhamba kwamanzi okuthembekileyo.

I-Valve yokuHlala eneMisonto yabasetyhini: Inkcazo kunye neempawu

Yintoni iValve yokuLanda eneMisonto yabasetyhini?

• IIvalvu Yokufikela Enemisonto Yabasetyhiniyivalvu ye-hydrant yephethini yeglobe yohlobo lweflange, uhlobo lwe-oblique.
• Ihlangabezana nomgangatho we-BS 5041 Part 1 wezixhobo zokukhusela umlilo.
• Uqhagamshelo lwepayipi yokuhambisa kunye nesivalo esingenanto zilandela umgangatho we-BS 336:2010.
• Le valve ihlelwa njengoxinzelelo oluphantsi, kunyeuxinzelelo oluqhelekileyo lokungena ukuya kuthi ga kwiibha ezili-15.
• I-brass isebenza njengesixhobo esiphambili sokuqina.
• Ubungakanani bokungena buyi-2.5 intshi ngeflange, kwaye ubungakanani bokuphuma buyi-2.5 intshiBS 336.
• Isebenza ngoxinzelelo olusebenzayo lwe-16 bar kwaye ivavanywa isihlalo sevalvu kwi-16.5 bar kwaye ivavanywa umzimba kwi-22.5 bar.
• Ivalvu inika isantya sokuhamba kwamanzi seelitha eziyi-8.5 ngomzuzwana kuxinzelelo lwe-outlet yeebha ezi-4.
• Yenzelwe izinyusi ezimanzi kwiinkqubo ze-fire hydrant, isebenza ngamanzi atshajwa ngokusisigxina avela kumthombo oxinzelelweyo.
• Ifanelekile kuzo zombini iinkqubo zokukhusela umlilo elunxwemeni nangaphandle kolwandle.
• Iqinisekisiwe ngokwemigangatho yokukhusela umlilo, kuquka i-BS 5041 Icandelo 1 kunye ne-BS 336:2010.

Imisebenzi ephambili kwiinkqubo zokukhusela umlilo

I-Female Threaded Landing Valve idlala indima ebalulekileyo kwiinkqubo zokukhusela umlilo. Ilawula ukuhamba kwamanzi kwiipayipi zomlilo ngexesha likaxakeka. Abacimi-mlilo basebenzisa le valve ukudibanisa iipayipi ngokukhawuleza kunye nokufikelela kumanzi axinzelelweyo. I-valve iqinisekisa ukunikezelwa kwamanzi okuzinzileyo nokuthembekileyo, okunceda amaqela ukuba aphendule ngokukhawuleza kwaye alawule imililo. Uyilo lwayo luxhasa ukusebenza okulula, nokuba phantsi kweemeko ezixinzelelekileyo. Ukuhambelana kwe-valve nee-hose fittings eziqhelekileyo kwenza ukuba ibe lukhetho olukhethwayo kwizakhiwo ezininzi nakwizibonelelo.

Iimpawu ezibonakalayo nezomzimba

Iivalvu zokumisa ezifakwe imisonto zabasetyhini zineempawu ezikhethekileyo ezizahlula kwezinye iintlobo. Ezi valve zisebenzisauqhagamshelo lwesiphelo esinemisonto yabasetyhiniezijijela kwiipayipi ezifakwe imisonto yamadoda. Iintlobo zemisonto eqhelekileyo ezifana ne-NPT, i-BSPT, okanye i-BSPP zenza isitywino esiqinileyo, esidla ngokuba neteyipu yokutywina okanye i-compound. Uyilo oluncinci alunazo iiflanges okanye imingxunya yebholiti, nto leyo eyenza ukufakwa kube lula kwiindawo ezixineneyo. Itheyibhile engezantsi igxininisa umahluko ophambili:

Imigangatho yeValve yokuHlala eneMisonto yabasetyhini kunye nokuThotyelwa kweKhowudi

Imigangatho yeHlabathi (BS 5041, EN 671-2, UL, IS 5290)

Uyilo lwabavelisiIivalvu zokuHlala eziNxibeleleneyo zaBasetyhiniukuhlangabezana nemigangatho engqongqo yamazwe ngamazwe. Le migangatho iqinisekisa ukuba iivalvu zisebenza ngokuthembekileyo kwiimeko ezingxamisekileyo zomlilo kwaye zidityaniswa ngokungenamthungo neenkqubo zokukhusela umlilo. Eyona migangatho idumileyo ibandakanya:

• I-BS 5041-1: Ichaza iimfuno zokwenza, ukuvavanya, ukumakisha, kunye nokupakisha iivalvu zokumisa. Iivalvu kufuneka zibe ne-DN65 (2 1/2”) yendoda okanye yebhinqa enemisonto okanye ii-flange inlets.
• I-BS 336: Ichaza iimfuno zoqhagamshelo lwepayipi yokukhupha kunye nezigqubuthelo ezingenanto ezineetyathanga.
• I-BS 5154: Igubungela iinkcukacha ezongezelelweyo zokwakhiwa kweevalvu kunye nokusebenza kwazo.
• I-ISO 9001:2015, i-BSI, kunye ne-LPCB: Ukubonelela ngeemvume zamazwe ngamazwe zolawulo lomgangatho kunye nokuthembeka kwemveliso.

Iivalvu zihlala zinezixhobo ezimelana nokugqwala okanye ii-epoxy coatings ezidityaniswe ne-fusion. Ezi mpawu zinceda ukugcina ukusebenza kakuhle ngokuhamba kwexesha. Nangona i-EN 671-2, i-UL, kunye ne-IS 5290 zibalulekile kushishino lokukhusela umlilo, amaxwebhu awabhekiseli ngqo kule migangatho yeeValve zokuLanda ezineMisonto yabasetyhini. Uninzi lweemvume zamazwe ngamazwe zigxile kwi-BS 5041 kunye ne-BS 336.

Qaphela: Isiqinisekiso samazwe ngamazwe siqinisekisa ukuba iivalvu ziyahlangabezana neemfuno zokhuseleko, ukuqina, kunye nokuhambelana kwiimarike zehlabathi.

Iikhowudi zaseMelika kunye neemfuneko ze-NFPA 14

E-United States, iikhowudi zomlilo zibeka iimfuno ezicacileyo zeevalvu zokufika. I-NFPA 14, i-Standard for the Installation of Standpipe and Hose Systems, ikhokela ukukhethwa kunye nokufakwa kweevalvu kwiinkqubo zokukhusela umlilo. Abahloli bajonga ukuba iivalvu ziyahlangabezana na nemigangatho yobukhulu, umlinganiselo woxinzelelo, kunye nezinto. Bakwaqinisekisa ukuba iivalvu zineentlobo ezifanelekileyo zemisonto kunye neendlela zokulawula ezinokuthenjwa.

Iiarhente zokuhlola zilandela inkqubo eneenkcukacha:

1. Qinisekisa ukuthotyelwa kwemigangatho efana ne-BS 5041 kunye neminye imiqathango yokhuseleko lomlilo efanelekileyo.
2. Ukuziphathaukuhlolwa rhoqo rhoqo kwiinyanga ezintandathuukujonga ukuvuza, ukugqwala, kunye nokusebenza ngokufanelekileyo.
3. Qinisekisa iindlela zokufakela ezichanekileyo, kuquka ukulungelelaniswa kwemisonto kunye nokutywinwa kwayo.
4. Hlola ukuqina kwezinto kunye nokumelana nokugqwala.
5. Hlola iingxelo zolondolozo kunye neziphumo zovavanyo loxinzelelo.
6. Qinisekisa iziqinisekiso ezifana neKITEMARK kunye nokuthotyelwa koxinzelelo olusebenzayo kunye neemfuno zoxinzelelo lovavanyo.

Iikhowudi zomlilo zichaza nezohlwayo zokungathobeli imithetho. Ukuba ivalvu ayihlangabezani neemfuno ezifunekayo, indawo inokujongana nemiphumo yezomthetho. Abahloli bayayinyanzelisa le mithetho ukukhusela ubomi kunye nempahla.

Iikhrayitheriya zokuthobela imithetho: Uxinzelelo, izixhobo, imicu

IiValvu zokuLanda ezineMisonto yabasetyhini kufuneka zihlangabezane neemfuno ezahlukeneyo zokuthobela imithetho ukuze ziphumelele uhlolo kwaye zisebenze ngokufanelekileyo. Ezi mpawu ziquka:

Abahloli bajonga yonke into ngexesha lokuhlolwa kokhuseleko lomlilo. Bakhangela iimpawu zokugqwala, baqinisekise ukulungelelaniswa kwemisonto, baze baqinisekise ukuba iivalvu zisebenza kakuhle. Ukufakwa ngokufanelekileyo kunye nokugcinwa rhoqo kunceda ukuqinisekisa ukuba iivalvu zihlala zithembekile kwiimeko ezingxamisekileyo.

Icebiso: Izibonelelo mazigcine iirekhodi zolondolozo ezineenkcukacha kunye neziphumo zovavanyo ukubonisa ukuthotyelwa kwemithetho okuqhubekayo ngexesha lokuhlolwa.

Iingenelo kunye nezicelo zeValve yokuHlala eneMisonto yabasetyhini

Ukuhambelana koQhagamshelo kunye nokuTshintshiselana

• Imisonto yangaphakathi ngaphakathi kwi-swivel ivumela ukudibana okuqinileyo kunye nee-couplings zendoda.
• I-swivel ithintela ukujijeka kwepayipi ngexesha loqhagamshelo, nto leyo ephucula ukusetyenziswa kwayo.
• Iindidi zemisonto eqhelekileyo ezifana ne-NH/NST, i-NPT, kunye ne-NPSH ziqinisekisa ukufana ngokuchanekileyo nezinye izinto zenkqubo.
• Ii-rocker lugs kunye nee-Higbee notches zinceda ekulungelelaniseni imisonto ngokukhawuleza, zenza unxibelelwano lukhawuleze kwaye luthembeke.
• Iigaskets ngaphakathi kwe-coupling zibonelela ngezivalo eziqinileyo zokuthintela ukuvuza.
• Iiringi zokwandisa zibopha ipayipi ngokuqinileyo, zigcina uqhagamshelo luqinile.

Uvavanyo loxinzelelo kunye nokusebenza

Ivalvu Yokumisa Intambo Yabasetyhini ixhasa uxinzelelo olusebenzayo ukuya kuthi ga kwi-20 Bar (290 PSI). Olu luhlu luphezulu luqinisekisa ukuhamba kwamanzi okuthembekileyo ngexesha leengxamiseko. Ivalvu igcina ukusebenza phantsi kweemeko ezinzima, inceda abacimi-mlilo ukulawula imililo ngokukhawuleza. Ukuhanjiswa koxinzelelo rhoqo kuxhasa ukulwa umlilo okusebenzayo kwizakhiwo eziphakamileyo nakwiindawo zokugcina impahla.

Ukuqina kwezinto kunye nokumelana nokugqwala

Ukwakhiwa kwentsimbi engagqwaliyo kunye nobhedu kunceda ivalvu ihlale ixesha elide, nokuba ikwiindawo ezinzima.

Ukufakelwa, Ukugcinwa, kunye neenzuzo zokusebenza

Ivalvu Yokumisa Intambo Yabasetyhini ifakwa lula ngenxa yemisonto kunye nobukhulu obuqhelekileyo. Izinto ezimelana nokugqwala kunye neengubo zokukhusela zinciphisa iimfuno zokugcinwa. Ivalvu isebenza ngokuthembekileyo phantsi koxinzelelo oluphezulu kwaye ihlangabezana nemigangatho eyaziwayo. Abacimi-mlilo bafumana ivalvu kulula ukuyisebenzisa kwiimeko ezingxamisekileyo, ngenxa yoyilo lwayo oluncinci kunye nokusebenza okulula.

Ufakelo oluqhelekileyo kunye nemizekelo yokuthobela ikhowudi yehlabathi lokwenyani

Izakhiwo zifaka ezi valve kwizinyuko, kwiikhabhathi zokukhupha, kwayeiinkqubo zokuphakamisa amanziIzakhiwo eziphakamileyo, iindawo zokugcina impahla, kunye namaqonga aselunxwemeni azisebenzisela ukukhusela umlilo. Abahloli bayayivuma le valve ukuba iyathotyelwa imithetho kuba ihlangabezana nemigangatho yamazwe ngamazwe kwaye inika ukusebenza okuthembekileyo.

Ivalvu Yokumisa Intambo Yabasetyhini ikhethekile njengokhetho oluthembekileyo noluhambelana nemithetho yokukhusela umlilo.

• Izinto ezihlala ixesha elide kunye noyilo olucokisekileyo ziqinisekisa ukusebenza okuthembekileyo ngamaxesha kaxakeka.
• Iziqinisekiso zamazwe ngamazwe kunye nokufakwa okulula kuxhasa ukhuseleko kuzo zonke iintlobo zezakhiwo.
• Uqhagamshelo olukhawulezayo lwepayipi kunye neendawo ezifikelelekayo zinceda abacimi-mlilo ukuba baphendule ngokukhawuleza.

FAQ

Yintoni eyenza ivalvu yokufika enemisonto yabasetyhini ifaneleke kwiikhowudi zomlilo zanamhlanje?

Abahloli bayazamkela ezi valve kuba ziyahlangabezana nemigangatho yamazwe ngamazwe. Uyilo lwazo luqinisekisa ukuhamba kwamanzi okuthembekileyo kunye nokunxibelelana okulula kwepayipi ngexesha leengxakeko.

Ngaba iivalvu zokufika ezinemisonto zabasetyhini zingafanelana neentlobo ezahlukeneyo zepayipi yomlilo?

Ewe. Iintlobo zemisonto eqhelekileyo ezifana ne-NPT, i-BSPT, kunye ne-NH/NST zivumela ezi valve ukuba ziqhagamshelane neepayipi ezininzi zomlilo ezisetyenziswa kwiinkqubo zokukhusela umlilo.

Zingaphi izihlandlo apho kufuneka zihlolwe khona iivalvu zokufikela ezinxibe imisonto zabasetyhini?

Izakhiwo kufuneka zihlole ezi valve rhoqo emva kweenyanga ezintandathu. Ukuhlolwa rhoqo kunceda ukugcina ukusebenza kakuhle nokuqinisekisa ukuba ziyathotyelwaiikhowudi zokhuseleko lomlilo.