Piston kos li qub yog qhov tseem ceeb tshwj xeeb ntawm kev nqa daim tshev valve. Ob leeg cia siab rau txoj kev txav ntsug ntawm lub valve disc kom qhib thiab kaw, tab sis piston kos li qub tau ua kom zoo rau hauv cov qauv thiab kev ua haujlwm, tshwj xeeb tshaj yog nyob rau hauv cov lus teb ceev thiab dej rauj.
Ib txwmnqa check li qubcia siab rau lub valve disc tus kheej qhov hnyav kom poob thiab foob. Lawv muaj cov qauv yooj yim thiab txhim khu kev qha sealing, ua rau lawv haum rau me me -inch, siab - cov kav dej. Txawm li cas los xij, lawv qhov kev kaw nrawm yog cuam tshuam los ntawm hydrodynamics, ua rau lawv yooj yim rau dej rauj. Lawv muaj nyob rau hauv hom ntsug thiab kab rov tav, nrog rau cov lus qhia kev teeb tsa txwv (nruab rau cov kav dej ntsug, kab rov tav rau kab rov tav kav).
Piston check li qub, ntawm qhov tod tes, ntxiv ib qho tsis siv neeg lub cev uas muaj lub piston thiab lub tog raj kheej ntawm lub valve disc, feem ntau nrog kev pab lub caij nplooj ntoos hlav. Qhov no tso cai rau kom ceev thiab du valve kaw thaum nruab nrab ntws tus nqi txo, txo qhov cuam tshuam thiab dej rauj cuam tshuam. Lawv tshwj xeeb tshaj yog haum rau cov xwm txheej uas yuav tsum muaj siab rau kev tiv thaiv kev rov qab thiab kev ruaj ntseg, xws li cov twj tso kua dej tawm thiab siab - nce dej siab.
Txawm hais tias cov qauv yog me ntsis nyuaj, lawv muab kev sib khi zoo dua thiab cov lus teb sai dua. Feem ntau xav tau ntsug installation kom ntseeg tau tias kev ua tau zoo.
Tsis meej pem Ntawm Lift vs. Piston Check Valves?Tau txais Peb Cov Kev Xaiv Pro Matrix & Cov Kws Qhia Tawm Tswv Yim Hnub no.
Core Mechanical Features Sib piv
| Parameter | Lift Check Valve | Piston Check Valve |
| Disc Design | Mushroom los yog Poppet hom disc | Plunger-style piston nrog ntev kev taw qhia nto |
| Kev taw qhia Mechanism | Yooj yim central qhia tus pin | Precision - tshuab pistontxav mus rau hauv lub cev lub tog raj kheej |
| Damping nyhuv | Tsawg heev rau tsis muaj; ceev kaw | Dashpot nyhuv; muab ua- hauv buffering |
| Flow Path | S-zoo li (Globe-style) | S-zoo li (Globe-style) |
| Flow Resistance | Siab(Ntau dua li viav vias hom) | Siab heev(Me ntsis siab dua li nqa hom) |
| Txoj Cai Sealing | Relies on backpressure thiab gravity | Superior stability vim precision kev taw qhia |
Technical Specifications thiab txwv
| Parameter | Lift Check Valve | Piston Check Valve |
| Qhov Loj | Feem ntauMe Ntsuag(DN15-DN50) | Me me mus rau nruab nrab(Txog DN250) |
| Kev ntsuas siab | Siab (150-2500) | Siab heev(Class 600–4500+) |
| Mounting txoj hauj lwm | Kab rov tav pipelines nkaus xwb(Tshwj tsis yog caij nplooj ntoos hlav-loaded) | Kab rov tav pipelines nkaus xwb(Tshwj tsis yog lub caij nplooj ntoos hlav hnyav siv) |
| Cracking siab | Tsawg (yuav tsum kov yeej disc hnyav) | Siab dua (yuav tsum kov yeej piston kev sib txhuam) |
| Dej rauj / Slam | Muaj peev xwm slamming suab nrov | Ua haujlwm ntsiag to(Piston muab damping) |
| Hnav Resistance | Qhia tus pin nquag rau kev co hnav | Piston nto yog ruaj tab sis rhiab rau cov khib nyiab |
Media thiab Service Suitability
| Parameter | Lift Check Valve | Piston Check Valve |
| Hom Media | Ntxuav cov kua, roj, dej | Siab -cov pa roj, cua, chav |
| Pulsating Flow | Yooj yim rau siab - zaushais lus | ruaj khov heev(Absorbs siab pulses) |
| Media huv huv | Kev xav tau siab | Siab heev(Cov khoom tuaj yeem cuam tshuam lub piston) |
| Cycling zaus | Haum rau cov qauv voj voog | Zoo tagnrho raunquag hloovthiab fluctuating loads |
Summary Selection Guide
| Feature | Lift Check Valve | Piston Check Valve |
| Kev taw qhia | Yooj yim Pin | Precision Piston / Lub tog raj kheej |
| Pulsation tuav | Poor (Chattering) | Zoo heev (Damped) |
| Siab poob | Siab | Siab heev |
| Slamming Risk | Nruab nrab | Tsawg heev (Tseeb) |
| Zoo tshaj rau | General High -Cov kua qaub | Siab -Npaj roj, Chav, Pulsating Flow |
GNEE Check valve Hoobkas
FAQ
Lift check valve yog dab tsi?
Lift check valve yogib hom valve uas yog siv los tswj cov kev taw qhia ntawm cov dej ntws hauv cov kav dej, kom ntseeg tau tias qhov ntws tau tshwm sim hauv ib qho kev taw qhia.. Nws lub luag haujlwm tseem ceeb yog los tiv thaiv kev thim rov qab, uas tuaj yeem ua rau muaj kev sib kis, kev puas tsuaj rau lub cev, lossis kev ua haujlwm tsis zoo.
Lub hom phiaj ntawm lub piston valve yog dab tsi?
Lub piston valve yog ib yam khoom sivtswj kev txav ntawm cov kua los yog roj raws lub raj lossis cov yeeb nkab los ntawm txoj kev tawm ntawm lub piston nyob rau hauv lub chamber lossis lub tog raj kheej.