Amavalvu okuhlola, aziwa nangokuthi ama-valve angabuyi (ama-NRV), ayingxenye ebalulekile yanoma yiluphi uhlelo lwezimboni noma lwezindawo zokuhlala. Zisetshenziselwa ukuvimbela ukubuyela emuva, ukuqinisekisa ukusebenza kahle kwesistimu nokuvimbela umonakalo.

Ama-valve okuhlola asebenza kahle kalula. Ukucindezela okudalwe uketshezi olugeleza ohlelweni lwamapayipi kuvula i-valve, futhi noma yikuphi ukugeleza okubuyela emuva kuvala i-valve. Ivumela uketshezi ukuthi lugeleze ngokuphelele lungavimbeli ukuya ohlangothini olulodwa futhi luvale ngokuzenzakalelayo lapho ukucindezela kuncipha. Nakuba lokhu kulula, kunezinhlobo ezahlukene zama-valve okuhlola anemisebenzi ehlukene kanye nezicelo. Wazi kanjani ukuthi yiluphi uhlobo lwe-valve yokuhlola ongayisebenzisa emsebenzini noma kuphrojekthi yakho? Ukuze sikusize wenze ukukhetha okufanele, nansi eminye imininingwane ngezinhlobo ezivame kakhulu zama-valve okuhlola.

I-valve yokuhlola i-Swing
I-White PVC Swing CheckSwing Check Valve isebenzisa idiski ngaphakathi kwevalvu ukuze ivumele noma imise ukugeleza ohlelweni lwamapayipi. Uma uketshezi lugeleza ngendlela efanele, ingcindezi iphoqa i-disc ukuthi ivuleke futhi igcine ivuliwe. Njengoba ingcindezi iyancipha, i-valve disc iyavala, ivimbele ukugeleza okubuyela emuva koketshezi. Ama-valve okuhlola ama-Swing atholakala ngezinhlobo zezinto ezibonakalayo, kufaka phakathi i-PVC, i-CPVC, icacile, kanye nezimboni.

Kunezinhlobo ezimbili zama-valve okuhlola ama-swing okufanele sigxile kuwo:

• I-Top Hinged - Kule valve yokuhlola i-swing, i-disc ixhunywe phezulu kwe-valve nge-hinge evumela ukuthi i-disc ivuleke futhi ivale.

• I-Swashplate - Le valve yokuhlola i-swing iklanywe ngendlela evumela ukuthi i-valve ivuleke ngokugcwele futhi ivale ngokushesha ekucindezelweni okuphansi kokugeleza. Ikwenza lokhu isebenzisa idiski emise okwe-dome elayishwe entwasahlobo ukuze ivumele ivalvu ukuthi ivaleke ngokushesha kune-valve enehenjisi ephezulu. Ukwengeza, i-disc kule valve yokuhlola iyantanta, ngakho-ke uketshezi lugeleza phezulu nangaphansi kwendawo yediski.
Lezi zinhlobo zama-valve okuhlola zivame ukusetshenziselwa ukuvimbela izikhukhula ezinhlelweni zokukhucululwa kwendle kanye nezicelo zokuvikela umlilo. Asetshenziswa ezinhlelweni ezihambisa uketshezi, amagesi nezinye izinhlobo zemidiya.

Phakamisahlola i-valve
Ama-valve okuhlola ama-Lift afana kakhulu nama-globe valves. Basebenzisa ama-pistons noma amabhola esikhundleni sama-disc asetshenziswa ama-valve okuhlola ajikelezayo. Amavalvu okuhlola okuphakamisa asebenza kangcono ekuvimbeleni ukuvuza kunamavalvu okuhlola ngokushwibeka. Ake sibheke lawa ma-valve okuhlola ama-lift amabili:

• I-Piston - Lolu hlobo lwe-valve yokuhlola lwaziwa nangokuthi i-valve yokuhlola ipulaki. Ilawula ukugeleza koketshezi kumasistimu amapayipi ngokusebenzisa ukunyakaza okuqondile kwepiston ngaphakathi kwegumbi lamavalvu. Kwesinye isikhathi i-piston inesiphethu esinamathiselwe, esisiza ukuthi ihlale endaweni evaliwe lapho ingasetshenziswa.

Sula Ivalufu ye-PVC yokuhlola Ibhola • Ivalvu yebhola - Ivalvu yokuhlola ibhola isebenza kalula kusetshenziswa amandla adonsela phansi. Uma kunokucindezela okwanele oketshezini, ibhola liyaphakanyiswa, futhi lapho ukucindezela kuncipha, ibhola ligoqa phansi futhi livale ukuvuleka. Ama-valve okuhlola amabhola atholakala ngezinhlobonhlobo zezinto ezibonakalayo nezinhlobo zesitayela: I-PVC: icacile nempunga, i-CPVC: inhlanganisela yangempela futhi ihlangene.

Phakamisahlola ama-valvezisetshenziswa ezindaweni eziningi ezimbonini eziningi. Uzowathola ezindaweni zokuhlala nezimboni. Zisetshenziswa embonini yokudla neziphuzo, embonini kawoyela negesi, nasembonini yasolwandle, ukubala ezimbalwa.

I-valve yokuhlola i-Butterfly
I-valve yokuhlola uvemvane ihlukile ngoba i-disc yayo empeleni igoqa phakathi ukuze ivumele uketshezi ukuba lugeleze. Lapho ukugeleza kubuyiselwa emuva, ama-halves amabili aphinde avule ukuze avale i-valve evaliwe. Le valve yokuhlola, eyaziwa nangokuthi i-double plate check valve noma i-valve yokuhlola i-disc yokugoqa, ifanele izinhlelo zoketshezi ezinomfutho ophansi kanye nezinhlelo zamapayipi egesi.

I-valve yokuhlola iglobhu
Ama-valve okuhlola wokuvala akuvumela ukuthi uqale futhi umise ukugeleza ohlelweni lwamapayipi. Zihlukile ngoba zikuvumela ukuthi ulawule ithrafikhi. I-valve yokuhlola i-globe ngokuyisisekelo iyi-valve yokuhlola enokulawula kokukhipha eyeka ukugeleza kungakhathaliseki ukuthi ikuphi ukugeleza noma ingcindezi. Uma ingcindezi iphansi kakhulu, i-valve yokuhlola ivala ngokuzenzakalelayo ukuvimbela ukugeleza emuva. Lolu hlobo lwe-valve yokuhlola lungasebenza ngokusebenzisa isilawuli sangaphandle kunokulawula ukudlula, okusho ukuthi ungasetha i-valve endaweni evaliwe kungakhathaliseki ukugeleza.

Ama-valve okuhlola i-Globe asetshenziswa kakhulu ezinhlelweni zokubhayela, izitshalo zikagesi, ukukhiqizwa kukawoyela kanye nezicelo zokuphepha ezinomfutho ophezulu.

Imicabango yokugcina kuma-Check Valves
Uma kuziwa ekuvimbeleni ukubuyela emuva, ayikho inketho ngaphandle kwe-valve yokuhlola. Manje njengoba wazi kancane ngezinhlobo ezahlukene zama-valve okuhlola, kufanele ukwazi ukunquma ukuthi iyiphi elungele isicelo sakho.