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Lift chèk valv

Valv la chèk leve se yon aparèy kontwòl koule unidirectional ki otomatikman ouvè ak fèmen atravè presyon mwayen yo anpeche repòl, lajman ki itilize nan sistèm endistriyèl ak sivil tiyo. Estrikti debaz li yo konprann yon kò valv, disk, chèz, ak mekanis k ap gide, opere sou balans ki genyen ant presyon likid ak fòs gravitasyonèl disk la.
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Lè medya koule pi devan, presyon an likid genyen batay gravite disk la, pouse li vètikal anwo nan sifas la sele chèz yo louvri pasaj la ak rezistans minim. Yon fwa koule a sispann oswa ranvèse, disk la gout sou chèz la anba gravite ak backpressure, fòme yon sele sere yo bloke koule ranvèse. Sa a konsepsyon asire yon gwo zòn sele kontak ant disk la ak chèz, pèmèt pèfòmans ekselan sele ki satisfè estanda strik tankou ANSI/FCI 70-2 Klas VI pou tou pre-zewo fwit.
Pou seleksyon materyèl, kò valv yo souvan te fè nan fè jete, asye jete, oswa asye pur pou adapte yo ak presyon diferan ak kondisyon tanperati. Disk ak chèz itilize alyaj difisil, kawotchou, oswa PTFE ki baze sou karakteristik medya amelyore mete ak rezistans korozyon. Pou egzanp, nan aplikasyon pou petrochimik ak medya korozivite, yon kò en-asye pè ak yon sifas PTFE sele asire rezistans segondè presyon ak pwoteksyon korozyon. Nan sistèm rezèv dlo, tiyo chèk jete-fè yo ofri fyab ekonomik pou koule dlo unidirectional.
Konpare ak tiyo chèk balanse, tiyo chèk leve bay pi bon poze sele men ak pi wo rezistans koule. Yo bezwen tou oryantasyon enstalasyon strik - enstalasyon vètikal sou tuyaux orizontal oswa tuyaux vètikal ak koule medya anwo -asire disk la opere nòmalman atravè gravite. Malgre limit sa yo, prevansyon siperyè yo ak prevansyon repak yo fè yo chwa ki pi pito pou senaryo ki gen gwo sele-demann tankou tuyaux vapè, pwoteksyon ponp priz, ak rezèv dlo bilding ki wo, jwe yon wòl enpòtan nan asire sekirite sistèm ak operasyon ki estab.
June 27, 2025
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