Valve ya Phaphatani Xingheniso

Manghenelo:

Valve ya phaphataniyi huma eka ndyangu wa ti valve leti vuriwakati valve ta kotara ya ku jika. Loko yi tirha, valve yi pfulekile hi ku helela kumbe yi pfala loko disc yi rhendzeleka hi kotara ya ku jika. “Phaphatani” i disiki ya nsimbi leyi vekiweke eka nhonga. Loko valve yi pfariwile, disc yi hundzuriwa leswaku yi pfalela hi ku helela ndlela yo hundza. Loko valve yi pfulekile hi ku helela, disc yi rhendzeleka hi kotara leswaku yi pfumelela ku hundza loku lavaka ku va loku nga siveleriwangiki ka mati. Valve yinga tlhela yi pfuriwa hiku engeteleka leswaku throttle flow.

Kuna tinxaka tohambana hambana ta ti valve ta maphaphatani, yin’wana na yin’wana yi lulamisiwile eka ntshikelelo wohambana hambana na matirhiselo yohambana hambana. Valve ya maphaphatani ya zero-offset, leyi tirhisaka ku olova ka rhaba, yina ntshikelelo wale hansi swinene. Valve ya phaphatani ya double offset ya matirhelo yale henhla, leyi tirhisiwaka eka tisisiteme ta ntshikelelo wale henhla nyana, yi offset kusuka eka layini yale xikarhi ya xitulu xa disc na body seal (offset yin’we), na layini yale xikarhi ya bore (offset two). Leswi swi endla leswaku kuva na cam action hinkarhi wa ntirho kuva yi tlakusa xitulu kusuka eka seal leswi endlaka leswaku kuva na friction leyintsongo kutlula leswi endliwaka eka zero offset design naswona swihunguta ntolovelo wa xona wo ambala. Valve leyi faneleke swinene eka tisisiteme ta ntshikelelo wale henhla i triple offset butterfly valve. Eka valve leyi disc seat contact axis yi offset, leyi tirhaka ku herisa kahle ku sliding contact exikarhi ka disc na seat. Eka ti triple offset valves xitulu xi endliwe hi nsimbi leswaku xinga endliwa hi muchini kufana naku fikelela bubble tight shut-off loko xihlangana na disc.

Tinxaka

1. Tivalvu ta phaphatani leti hlanganisiweke– muxaka lowu wa valve wuna xitulu xa rhaba lexi tiyeke lexi nga na disc ya nsimbi.
2. Tivalvu ta phaphatani leti nga ni swilo swimbirhi leswi nga tolovelekangiki(ti valve ta maphaphatani leti tirhaka kahle kumbe ti valve ta maphaphatani ta double-offset) – muxaka wohambana wa switirhisiwa wutirhisiwa eka xitulu na disc.
3. Tivalvu ta phaphatani leti nga ni swilo swinharhu leswi nga tolovelekangiki(triple-offset butterfly valves) – switulu swinga laminated kumbe solid metal seat design.

Tivalvu ta phaphatani ta xitayili xa wafer

Ku...wafer xitayili xa phaphatani valveyi endleriwe ku hlayisa xisirhelelo eka ku hambana ka ntshikelelo wa matlhelo mambirhi ku sivela ku tlhelela endzhaku kwihi na kwihi eka tisisiteme leti endleriweke ku khuluka ka tlhelo rin’we. Yi hetisisa leswi hi xisirhelelo lexi ringanaka swinene; i.e., gasket, o-ring, precision machined, na xikandza xa valve xa flat eka matlhelo yale henhla nale hansi ya valve.

Valve ya phaphatani ya xitayili xa lug

Tivalvu ta xitayili xa lugva na ti threaded inserts eka matlhelo hamambirhi ya miri wa valve. Leswi swipfumelela leswaku ti nghenisiwa eka sisiteme hiku tirhisa ti set timbirhi ta ti bolts naswona kungari na ti nuts. Valve yi vekiwa exikarhi ka ti flanges timbirhi hiku tirhisa sete yohambana ya ti bolts eka flange yin’wana na yin’wana. Xiyimiso lexi xi pfumelela tlhelo rin’wana na rin’wana ra sisiteme ya tiphayiphi ku tsemiwa handle ko kavanyeta tlhelo rin’wana.

Valve ya phaphatani ya xitayili xa lug leyi tirhisiwaka eka vukorhokeri bya dead end hi ntolovelo yina mpimo wa ntshikelelo lowu hungutiweke. Xikombiso, lug-style butterfly valve leyi vekiweke exikarhi ka ti flanges timbirhi yina 1,000 kPa (150 psi) pressure rating. Valve leyi fanaka leyi vekiweke hi flange yin’we, eka vukorhokeri bya dead end, yina 520 kPa (75 psi) rating. Ti lugged valves ti kondzelela swinene ti khemikhali na ti solvents naswona tinga khoma mahiselo yofika eka 200 °C, leswi endlaka leswaku yiva solution yotala.

Tirhisa eka indasitiri

Eka tiindasitiri ta mirhi, tikhemikhali na swakudya, ku tirhisiwa valve ya phaphatani ku kavanyeta ku khuluka ka swikumiwa (leswi tiyeke, leswi nga mati, gasi) endzeni ka endlelo. Ti valve leti tirhisiwaka eka ti indasitiri leti titala ku endliwa kuya hi swiletelo swa cGMP (current good manufacturing practice). Ti valve ta maphaphatani hi xitalo ati siva ti ball valve eka ti indasitiri totala, ngopfu ngopfu petroleum, hikokwalaho ka ntsengo wale hansi xikan’we naku olova ka ku vekiwa, kambe tiphayiphi letingana ti butterfly valves tinga ‘pigged’ kuva ti basisiwa.

Swifaniso