Taw qhia rau kev siv, cov khoom tseem ceeb thiab cov yam ntxwv ntawm cov wafer kos valve

Kuaj valve hais txog lub valve uas cia li qhib thiab kaw lub valve nrov plig plawg los ntawm kev cia siab rau qhov ntws ntawm qhov nruab nrab nws tus kheej kom tsis txhob rov qab los ntawm qhov nruab nrab, tseem hu uakos valve, ib-txoj kev valve, rov qab ntws valve thiab rov qab siab valve. Covkos valveyog lub valve tsis siv neeg uas nws lub luag haujlwm tseem ceeb yog los tiv thaiv qhov rov qab ntawm qhov nruab nrab, qhov rov qab tig ntawm lub twj tso kua mis thiab lub cev muaj zog tsav tsheb, thiab qhov tso tawm ntawm qhov nruab nrab hauv lub thawv. Kos li qub kuj tseem siv tau rau ntawm cov kab uas muab cov cuab yeej pabcuam uas lub siab tuaj yeem nce siab dua qhov system siab.

1. TNws siv lub wafer check valve:

Covkos valve yog ntsia rau hauv lub raj xa dej, thiab nws txoj haujlwm tseem ceeb yog los tiv thaiv qhov rov qab ntawm qhov nruab nrab. Covkos valveyog lub valve tsis siv neeg qhib thiab kaw nyob ntawm qhov nruab nrab siab.Wafer check valve yog haum rau nominal siab PN1.0MPa ~ 42.0MPa, Class150 ~ 25000; nominal txoj kab uas hla DN15 ~ 1200mm, NPS1/2 ~ 48; Nruab nrab backflow. Los ntawm kev xaiv cov khoom sib txawv, nws tuaj yeem siv rau ntau yam xov xwm xws li dej, chav dej, roj, nitric acid, acetic acid, muaj zog oxidizing nruab nrab thiab uric acid.

2. Tnws cov khoom tseem ceeb ntawm covwafer check valve:

Muaj cov pa roj carbon steel, qis kub hlau, dual theem steel (F51 / F55), titanium alloy, txhuas bronze, INCONEL, SS304, SS304L, SS316, SS316L, chrome molybdenum steel, Monel (400/500), 20 # alloy, Hastelloy thiab lwm yam khoom siv hlau.

3. Cov yam ntxwv ntawm covwafer check valve:

A. Cov txheej txheem ntev yog luv, thiab nws cov qauv ntev tsuas yog 1/4 ~ 1/8 ntawm cov tsoos flange kos valve

B. Qhov loj me thiab lub teeb yuag, nws qhov hnyav tsuas yog 1/4 ~ 1/20 ntawm ib txwm flange kos valve

C. Lub valve disc kaw sai sai thiab cov dej rauj siab me me

D. Ob lub kav dej kab rov tav lossis ntsug kav siv tau, yooj yim rau nruab

E. Cov dej ntws ntws yog du thiab cov dej tsis kam yog me me

F. Kev txiav txim siab zoo thiab kev ua haujlwm zoo sealing

G. Lub valve disc mus ncig yog luv luv thiab lub zog kaw yog me me

H. Tag nrho cov qauv yog yooj yim thiab compact, thiab cov duab zoo nkauj

I. Lub neej ua haujlwm ntev thiab txhim khu kev qha

4. TNws feem ntau faults ntawm check valve yog:

A. Lub valve disc tawg

Lub siab ntawm qhov nruab nrab ua ntej thiab tom qab kos valve yog nyob rau hauv lub xeev ntawm kev sib npaug thiab kev sib nrig sib "pom". Lub valve disc feem ntau raug ntaus nrog lub rooj zaum valve, thiab lub valve disc ua los ntawm qee yam khoom siv (xws li cam khwb cia hlau, tooj dag, thiab lwm yam) tawg. Txoj kev tiv thaiv yog siv lub tshev valve nrog lub disc ua cov khoom siv ductile.

B. Nruab nrab backflow

Lub sealing nto puas lawm; impurities raug kaw. Los ntawm kev kho lub sealing nto thiab ntxuav impurities, backflow tuaj yeem tiv thaiv.