Xaiv tus npauj npaim valve tsis yog catalog rho npe xwb. Ib tug 150 mm valve uas ua haujlwm zoo kawg nkaus hauv chilled- dej Hvac tuaj yeem ua tsis tau rau lub hlis thaum nug kom qhib 80℃brine nrog 2% ntsev. Siv cov ntoo txiav txim siab hauv qab no {{6} Raws li cov lus qhia kev lag luam 2025 no kom phim {- ntiaj teb raj.
1. Txhais tau lub hom phiaj
Pib nrog ua haujlwm: ntawm / tawm kev rho tawm, modulating tswj, lossis mus ncig ua si thaum muaj xwm ceev? Rau cov kev cais tawm yooj yim dn dn 40 hli (1½ nyob rau hauv.), Resilient - zaum lub xaim valve feem ntau yog tsim nyog; Rau kev txuas ntxiv nruam, xaiv ob npaug- eccentric (siab}}}}}}}}}}}}}} {{5 performance performance performance performance)) Qhov kev ua tau zoo) ntawm 30℃thiab 70℃qhib.
2. Qhov loj me rau ntws, tsis txhob quav ntxia
Txheeb xyuas CV: CV=Q / √ (δp). Example: 1 800 m³ h⁻¹ cooling water with 0.3 bar allowable drop needs Cv ≈ 3 300. A DN 300 mm centric valve delivers Cv 4 100-operating in the efficient 60–80 % range-whereas a DN 250 mm would be choked and a DN 350 mm oversized, causing poor control and seat flutter.
3. Siab & Lub Hnab Ntawv Ntsuas Kub
• 0-16 bar, -10℃mus rau 120 degree: epdm- Txoj kab ntu ntu, duged epinal valve, ductile-} hlau lub cev.
• 16-50? 16-50 txog li 250 Qib: Ob - eccentric, PTFE lossis Hlau Rooj, Cf8m Stainless Cev.
• Cryogenic Lng: Peb Triple-}}}}}}}}}}}}} {{1}- tawm. Nco ntsoov ntxiv 20% surge npoo mus rau kev ntsuas siab.
4. Cov kua zaub sib raug zoo sib xws
Dej muaj peev xwm: nsf -} 61 Epdm Liner; dej hiav txwv: nickel -} aluminin aluminium- bronze} bronze urmze discze discze discze Khoom noj khoom noj -} nbr lirner nrog stainless lub cev thiab polished disc ra tsawg dua los yog sib npaug rau 0.8 μm. Zam cov pa roj carbon steel nyob hauv chlorine {{} kev nplua nuj soligits-pitting tuaj yeem zoo perforate lub disc tsis pub dhau lub lis piam.
5. Kev Xaiv Lub Cev
Wafer hom yog qhov pheej yig thiab suits asme 125/150 lb flanges, tab sis yuav tsum muaj tag nrho} ntev bolts; Lug hom kev tso cai tuag -}} Qhov kev pab cuam kawg rau kev sib cais; U - Ntu ntu lub cev muab lub zog siab dua rau cov kab nqus tsev.
6. Kev ua raws li kev lag luam
• <2 Cycles / day: phau ntawv qib lossis cov iav iav.
• 2-60 mus / Hnub: Hnub: Pneumatic ob npaug {{2} Ua yeeb yam (1-3 s stroke, swb- muaj kev nyab xeeb nrog lub caij nplooj ntoo hlav rov qab).
• Nruam modulating: Fais actuator nrog pid tus haujlwm, qhov tseeb ± 1%, tab sis qeeb qeeb (5-30 s) thiab peev nyiaj. Nyob rau hauv cov cua tshuab hluav taws xob, cov pneumatics tseem yog lub neej ntawd vim tias lawv yog kev nyab xeeb.
7. Nruab rau Nuances
Mount lub kauj kab rov qab thaum twg ua tau; Ntsug qia ntxiab condensate thiab tuaj yeem dej khov hauv sub - xoom nroj tsuag. Ua kom muaj tsawg kawg 5 d Ncaj cov yeeb nkab ntws los kom tsis txhob muaj cov tshuaj asymmetric uas vibrates lub disc. Rau twj tso kua mis lossis luj tshib, orient lub qia txiav kom cov ntws tawm dav hlau.
8. Tus nqi Snapshot (DN 200 hli, PN 16, 2025 pricing)
Resilient centric, wafer, phau ntawv: € 220
Tib lub valve + pneumatic scotch -}}}} - muaj kev nyab xeeb: € 650
Ob npaug - eccentric, hlau rooj, hlau: {{1} {1}
Yam nyob rau hauv lub neej: a € 50 tus nqi them rau Stainless Disc them rov qab rau hauv<18 months if corrosion-related shutdowns are avoided.
Los ntawm stepping los ntawm kev ua haujlwm, CV, kev ua kua, lub cev thiab ua kom tsis muaj txiaj ntsig thiab tsis muaj qab zib {} Tsuas yog txoj cai Npauj npaim rau koj cov raj dej.
