Ma valve owunika, omwe amadziwikanso kuti ma valve osabwerera (NRVs), ndi gawo lofunikira pamakina aliwonse a mafakitale kapena okhala. Amagwiritsidwa ntchito poletsa kubwereranso, kuonetsetsa kuti dongosolo likugwira ntchito moyenera komanso kupewa kuwonongeka.

Ma valve owunika amagwira ntchito mosavuta. Kupanikizika komwe kumapangidwa ndi madzi omwe akuyenda kudzera mu mapaipi amatsegula valavu, ndipo kutuluka kulikonse kumatseka valve. Amalola kuti madzimadzi aziyenda mopanda malire kumbali imodzi ndipo amangozimitsa pamene kuthamanga kwachepa. Ngakhale kuti izi ndi zophweka, pali mitundu yosiyanasiyana ya ma valve oyendera omwe ali ndi ntchito zosiyanasiyana komanso ntchito. Mumadziwa bwanji kuti ndi mtundu wanji wa valavu yomwe mungagwiritse ntchito pantchito kapena polojekiti yanu? Pofuna kukuthandizani kusankha bwino, nazi zina zamitundu yodziwika bwino ya ma cheki.

Valavu yoyang'ana swing
White PVC Swing CheckSwing Check Valve imagwiritsa ntchito diski mkati mwa valavu kuti ilole kapena kuyimitsa kutuluka pamapaipi. Pamene madzi akuyenda mu njira yoyenera, kupanikizika kumakakamiza diski kuti itsegule ndikutsegula. Pamene kuthamanga kumachepa, valavu ya valve imatseka, kulepheretsa kutuluka kwamadzimadzi. Ma valve a swing cheque amapezeka mumitundu yosiyanasiyana, kuphatikiza PVC, CPVC, momveka bwino, komanso mafakitale.

Pali mitundu iwiri ya ma valve oyendera omwe tiyenera kuyang'ana kwambiri:

• Top Hinged - Mu valavu yowunikira iyi, diski imamangiriridwa pamwamba pa valavu ndi hinge yomwe imalola kuti diski itsegule ndi kutseka.

• Swashplate - Chovala ichi cha swing check valve chimapangidwa m'njira yomwe imalola kuti valavu itsegule mokwanira ndi kutseka mofulumira pazitsulo zotsika. Imachita izi pogwiritsa ntchito kasupe wokhala ngati dome kuti valavu itseke mwachangu kuposa valavu yokhala ndi hinged pamwamba. Kuphatikiza apo, chimbale chomwe chili mu valavu iyi chimayandama, kotero madzi amayenda pamwamba ndi pansi pa disc.
Mitundu ya ma cheke amtunduwu imagwiritsidwa ntchito kwambiri popewa kusefukira kwamadzi m'machitidwe otayira zimbudzi ndi ntchito zoteteza moto. Amagwiritsidwa ntchito pamakina omwe amasuntha zakumwa, mpweya ndi mitundu ina ya media.

Kwezanichekeni valavu
Ma valve okweza amafanana kwambiri ndi ma valve a globe. Amagwiritsa ntchito ma pistoni kapena mipira m'malo mwa ma disc omwe ma valve ozungulira amagwiritsa ntchito. Ma valve okweza cheke ndi othandiza kwambiri popewa kutayikira kuposa ma valve cheke. Tiyeni tiwone ma valve awiri awa:

• Pistoni - Mtundu uwu wa valve check valve umatchedwanso plug check valve. Imawongolera kutuluka kwamadzi mumayendedwe a mapaipi kudzera mumayendedwe amtundu wa pistoni mkati mwa chipinda cha valve. Nthawi zina pisitoni imakhala ndi kasupe, yomwe imathandiza kuti ikhale yotsekedwa pamene sikugwiritsidwa ntchito.

Chotsani Vavu ya Mpira ya PVC • Vavu ya Mpira - Vavu yowunika Mpira imagwira ntchito mongogwiritsa ntchito mphamvu yokoka. Pakakhala kuthamanga kokwanira mumadzimadzi, mpirawo umakwezedwa mmwamba, ndipo kukanikizako kukachepetsedwa, mpirawo umatsika ndikutseka kutsegula. Ma valve cheke a mpira amapezeka mumitundu yosiyanasiyana yazinthu ndi mitundu yamitundu: PVC: yoyera ndi imvi, CPVC: yolumikizana yowona komanso yaying'ono.

Kwezanifufuzani ma valveamagwiritsidwa ntchito m'mafakitale ambiri. Muwapeza m'malo okhala ndi mafakitale. Amagwiritsidwa ntchito m'makampani azakudya ndi zakumwa, m'makampani amafuta ndi gasi, komanso m'mafakitale apanyanja, kutchulapo zochepa chabe.

Vavu yoyang'ana gulugufe
Vavu yoyang'ana gulugufe ndi yapadera chifukwa chimbale chake chimapinda pakati kuti madzi azitha kuyenda. Kuthamanga kukasinthidwa, magawo awiriwa amatsegulanso kuti asindikize valve yotsekedwa. Valve yowunika iyi, yomwe imadziwikanso kuti valavu yoyang'ana mbale ziwiri kapena valavu yopukutira chimbale, ndiyoyenera kugwiritsa ntchito makina amadzimadzi otsika komanso makina amapope a gasi.

Globe check valve
Ma valve otseka otseka amakulolani kuti muyambe ndikuyimitsa kuyenda pamapaipi. Amasiyana chifukwa amakulolani kuti muziwongolera magalimoto. Valavu yoyang'ana padziko lonse lapansi kwenikweni ndi valavu yoyang'ana yokhala ndi chiwongolero chowongolera chomwe chimayimitsa kuyenda mosasamala kanthu zakuyenda kapena kuthamanga. Kupanikizika kukakhala kochepa kwambiri, valavu yowunikira imatseka yokha kuti iteteze kubwerera. Valve yamtundu uwu imatha kugwira ntchito pogwiritsa ntchito kuwongolera kunja osati kuwongolera, zomwe zikutanthauza kuti mutha kukhazikitsa valavu pamalo otsekedwa mosasamala kanthu za kutuluka.

Ma valve cheke a Globe amagwiritsidwa ntchito kwambiri pamakina opangira boiler, malo opangira magetsi, kupanga mafuta komanso kugwiritsa ntchito chitetezo champhamvu.

Malingaliro Omaliza pa Check Valves
Pankhani yoletsa kubwereranso, palibe njira koma valavu yowunika. Tsopano popeza mukudziwa pang'ono za mitundu yosiyanasiyana ya ma cheki ma valve, muyenera kusankha kuti ndi iti yomwe ili yabwino kwambiri pakugwiritsa ntchito kwanu.