Nubwo bishobora gusa nkaho ari akantu gato, ibikoresho bya O-ring bya valve ni ingenzi cyane. Ibikoresho bishobora kumenya ubushobozi bwo kwihanganira ubushyuhe bwa seal. Binaha seal ubushobozi bwo kudakoresha imiti, kandi ubwoko bumwe na bumwe bwa seal buhura n'amazi atandukanye. Ibikoresho bibiri bihuriweho na veal ya true union ball valves ni Viton na EPDM.

Viton (ifoto iri iburyo) ni rubber ikoze mu buryo bwa sintetike ifite ubushobozi bwo kurwanya ubushyuhe bwinshi n'imiti. EPDM ihagarariye Ethylene Propylene Diene Monomer kandi ifite imiterere yayo ituma iba ibikoresho bizwi cyane bya O-ring. Mu kugereranya Viton na EPDM, hari ibintu byinshi bigomba kwitabwaho: kwihanganira ubushyuhe, guhuza imiti n'igiciro. Komeza usome igereranya ryose.

Ibyuma bya EPDM bya kabutike
Rubber ya EPDM (Rubber ya EPDM) ni umupira ugoye kandi uhendutse ufite uburyo bwinshi bwo kuwukoresha. Ubusanzwe ukoreshwa mu kubungabunga igisenge bitewe n'amazi kuko EPDM ifunga neza. Ni ibikoresho bisanzwe bikoreshwa mu gufunga mu byuma bikonjesha kuko ari icyuma gikingira kandi gifite ubushyuhe buke. By'umwihariko, EPDM ikora neza mu bushyuhe buri hagati ya -49F na 293F (-45C na 145C), bigatuma iba nziza cyane gukoreshwa mu bushyuhe ubwo aribwo bwose.

Nubwo imipira myinshi irwanya ubushyuhe bwinshi, mike gusa ni yo ishobora kwihanganira ubushyuhe buri hasi nka EPDM. Ibi bituma iba amahitamo ya mbere ku muntu wese ugerageza gufunga ahantu hakonje cyangwa akoresheje ibikoresho bikonje. True Union Ball Valve ifiteImpeta za O-zifunze za EPDMIkoreshwa risanzwe rya EPDM ririmo gukingira amashanyarazi, imiyoboro y'amazi yo mu bidendezi, imiyoboro y'amazi, ibikoresho byo gukusanya imirasire y'izuba, impeta za O, n'ibindi byinshi.

Uretse kwihanganira ubushyuhe bwinshi, EPDM ifite ubushobozi bwo kurwanya ubushyuhe bwinshi. Ibi birimo amazi ashyushye, umwuka ushyushye, isabune, umuti wa potasiyumu, umuti wa sodiyumu hidroksidi, amavuta ya silikoni/amavuta, n'izindi aside nyinshi n'imiti. Ntibikwiriye gukoreshwa hamwe n'amavuta y'ubutare nk'amavuta yo kwisiga, amavuta cyangwa ibicanwa. Kugira ngo ubone uburyo bwihariye bwo guhuza imiti na EPDM, kanda hano. Iyi miterere itangaje, hamwe n'igiciro cyayo gito, ituma EPDM iba ibikoresho bizwi cyane byo gufunga.

Viton seal
Viton ni elastomer y'urubura na fluoropolymer ikoze mu buryo bwa sintetike. "Fluoropolymer" bivuze ko iki gikoresho gifite ubushobozi bwo kurwanya cyane ibintu bishongesha, aside na base. Ijambo "elastomer" rishobora guhindurwamo "rubura". Ntabwo tuzavuga ku itandukaniro riri hagati ya elastomer na rubura hano, ariko tuzaganira ku gituma Viton iba yihariye. Ibikoresho akenshi birangwa n'ibara ry'icyatsi kibisi cyangwa umukara, ariko ikiyitandukanya cyane ni ubucucike bwayo. Ubucucike bwa Viton buri hejuru cyane kurusha ubwoko bwinshi bwa rubura, bigatuma Viton seal iba imwe mu zikomeye cyane.

Viton ifite ubushobozi bwo kwihanganira ubushyuhe buri hagati ya -4F na 410F (-20C na 210C). Ubushyuhe bwinshi Viton ishobora kwihanganira butuma iba nziza cyane mu gukoresha ubushyuhe bwinshi. Viton ikunze gukoreshwa mu miringo ya O, uturindantoki twihanganira imiti n'ibindi bikoresho byabumbwe cyangwa byakuwemo. Imiringo ya O ikozwe muri Viton ni myiza cyane mu koga mu mazi, moteri z'imodoka n'uturindantoki dutandukanye.

Ku bijyanye no kurwanya ibinyabutabire, Viton ntabwo ari imwe. Irwanya ingese ituruka ku bintu byinshi by’amazi n’ibinyabutabire kurusha elastomer iyo ari yo yose idakoresha fluorine. Bitandukanye na EPDM, Viton ikorana n’amavuta, ibicanwa, amavuta yo kwisiga ndetse n’aside nyinshi zitari umwimerere. Irwanya kandi cyane gukandamizwa, ogisijeni yo mu kirere, imirasire y’izuba, imihindagurikire y’ikirere, ibicanwa bya moteri bifite ogisijeni, aromatike, fungi, ibumba, n’ibindi. Nanone irwanya gushya kurusha izindi rubber nyinshi. Soma byinshi ku byerekeye ibyo imiti ya Viton igomba gukora n’ibyo itagomba gukora.

Ikibazo nyamukuru cya Viton ni igiciro cyayo. Mu gukora, igura inshuro zigera kuri umunani z'amafaranga yo gukora ibikoresho bingana na EPDM. Iyo uguze ikintu kirimo ibikoresho bike gusa by'ibi birungo, igiciro gishobora kudatandukana cyane. Ariko iyo utumije byinshi, ushobora kwitega ko ibice bya Viton bihenze cyane kurusha EPDM.

Viton na EPDM seal
Imbonerahamwe y'urubura rwo gufunga Viton vs EPDM

None se ni ikihe gikoresho cyiza kurusha ibindi? Ibi bibazo ntabwo ari ukuri rwose. Ibi bikoresho byombi bifite uburyo bwihariye aho ari byiza, bityo byose biterwa n'akazi bigiye gukora. C yacuValves zo gusuzuma umupira wa PVCna CPVC Swing Check Valves ziraboneka hamwe na Viton seals cyangwa EPDM seals. Izi seals zikozwe mu miringa ya O-rings ishyizwe mu bikoresho. Izi valve zose zagenewe gusenywa byoroshye kugira ngo zoroshye kuzibungabunga, bityo zigire ibice bishobora gukurwaho.

Niba ukeneye valve yo gukoresha amazi, uko ubushyuhe bwaba buri kose, valve ifite agapfundikizo ka EPDM ni yo ihitamo ryiza. Uretse ubushobozi bwo kwihanganira ubushyuhe butandukanye gato, itandukaniro rikomeye hagati y’ibikoresho byombi ni ubushobozi bwabyo bwo kurwanya ubushyuhe. Viton ni nziza cyane ikoreshwa hamwe n’amavuta n’ibindi bikoresho byangiza, ariko iyo ukoresheje ikintu kitangiza nk’amazi, ubu burambe bukabije ntabwo ari ngombwa.