Lub siab ruaj ntseg valve (acronym PSV) yog ib qho khoom siv tsis siv neeg uas muaj qhov nkag thiab qhov hluav taws xob, feem ntau nyob rau sab laug. each lwm yam (ntawm 90 °), muaj peev xwm ntawm txo qhov siab hauv ib qhov system.
Cov duab ntawm sab laug sawv cev rau ib qho kev kos duab ntawm lub valve kev nyab xeeb, siv los ua lub cim hauv cov duab kos duab ntawm cov tshuab thermo-hydraulic.
Kev nyab xeeb li qub yog cov khoom siv thaum muaj xwm txheej ceev rau cov kua dej uas muaj zog, uas txiav ua haujlwm thaum lub teeb siab dhau lawm. Cov li qub no yog tswj hwm los ntawm ib lub teb chaws thiab thoob ntiaj teb standARDS. Peb cov li qub yuav tsum muaj qhov loj me, kuaj, nruab thiab tswj hwm raws li cov cai tam sim no thiab raws li tau teev tseg hauv peb phau ntawv qhia.
Besa® kev nyab xeeb li qub yog qhov tshwm sim ntawm ntau yam kev paub dhau los, txij li xyoo 1946 txog rau tam sim no, nyob rau hauv ntau yam kev thov thiab ua kom txaus siab rau tag nrho cov kev cai ntawm kev ua haujlwm. qhov tseeb siab ntaus ntawv tiv thaiv. Lawv muaj peev xwm zoo kawg nkaus uas tsis pub tshaj qhov siab tshaj plaws uas tau tso cai, txawm tias tag nrho lwm cov khoom siv kev nyab xeeb uas tau teeb tsa saum toj kawg nkaus tau ua tsis tiav.
Cov khoom tseem ceeb ntawm kev nyab xeeb valve tau qhia hauv daim duab:
Nco ntsoov ntawm daim ntawv thov thiab kev siv ntawm lub disc lever
Lub disc nqa qib yog ib qho khoom siv uas muaj kev ruaj ntseg valve tuaj yeem nruabped nrog, uas tso cai rau phau ntawv ib feem nqa ntawm lub disc. Feem ntau, lub hom phiaj ntawm qhov kev ua haujlwm no yog ua rau - thaum lub sijhawm ua haujlwm valve - kev khiav tawm ntawm lub tshuab process kua nyob rau hauv thiaj li yuav ntxuav qhov chaw ntawm lub rooj zaum thiab disc, txheeb xyuas qhov ua tau "sib nqus". Lub maneuver ntawm manually raising lub shutter, yuav tsum tau nqa tawm nrog lub valve kom raug ntsia rau hauv lub system nyob rau hauv lub lag luam thiab nyob rau hauv lub xub ntiag ntawm ib tug tej yam nqi siab, nyob rau hauv thiaj li yuav tau txais txiaj ntsim los ntawm kev siv lub siab. process kua los txo tus neeg siv phau ntawv siv zog.
1
Lub cev lub cev
2
Nozzle
3
Disc
4
Phau Ntawv Qhia
5
Caij nplooj ntoos hlav
6
Siab adjusting ntsia hlau
7
Qib
Keeb kwm ntawm kev ruaj ntseg valve
Ntau xyoo dhau los, nyob rau hauv txoj kev ntawm cov teb chaws Asia thaum ub, puffed mov tau siv los ua los ntawm kev siv lub lauj kaub hermetically kaw nyob rau hauv uas cov nplej nplej tau muab tso rau hauv nrog dej. Los ntawm rotating lub lauj kaub tshaj qhov hluav taws kub lub siab nyob rau hauv nws nce vim evaporation ntawm lub ntxiabped dej. Thaum cov nplej siav lawm, lub lauj kaub tau qhwvped nyob rau hauv ib lub hnab thiab qhib, ua rau muaj kev tswj tawg. Qhov no yog ib txoj kev txaus ntshai heev, vim hais tias tsis muaj lub valve muaj kev nyab xeeb, muaj kev pheej hmoo ntawm tag nrho cov khoom tawg tsis txhob txwm. Cov txheej txheem no feem ntau tau hloov tom qab Tsov Rog Ntiaj Teb Zaum II los ntawm cov tshuab ua haujlwm tau zoo dua tuaj yeem tsim cov nplej tsis tu ncua.
Thawj qhov kev nyab xeeb li qub yog developed nyob rau hauv lub xyoo pua 17th los ntawm kev ua qauv qhia los ntawm Fabkis inventor Denis Papin.
Rov qab rau cov hnub ntawd, kev nyab xeeb li qub tau ua haujlwm nrog lub zog thiab a counterbalance hnyav (uas tseem muaj nyob niaj hnub no) txawm hais tias, nyob rau niaj hnub no, lub siv lub caij nplooj ntoos hlav es tsis txhob hnyav hnyav tau dhau los ua neeg nyiam thiab muaj txiaj ntsig.
Dab tsi yog qhov kev nyab xeeb valve rau?
Lub ntsiab kev nyab xeeb li qub 'lub hom phiaj yog los tiv thaiv tib neeg lub neej los ntawm kev tiv thaiv ib qho kev ua haujlwm, ua haujlwm ntawm lub siab, los ntawm kev tawg.
Qhov no yog vim li cas nws tseem ceeb heev kom lav tias kev nyab xeeb li qub ib txwm ua haujlwm, vim tias lawv yog cov khoom siv kawg hauv cov kab ntev uas tuaj yeem tiv thaiv kev tawg.
Cov duab hauv qab no qhia txog qhov tshwm sim loj heev ntawm qhov tsis raug qhov loj me, nruab lossis tsis tu ncua kev nyab xeeb valve:
kev ruaj ntseg valve muaj nuj nqi
Kev nyab xeeb valve siv qhov twg?
Txhua qhov txhia chaw qhov siab tshaj plaws kev khiav hauj lwm siab txaus ntshai yuav tsum tau tshaj, kev ruaj ntseg li qub yuav tsum tau ntsia. Ib qho system tuaj yeem nkag mus rau hauv overpressure rau ntau yam.
Cov laj thawj tseem ceeb cuam tshuam txog ib tsis tswj qhov kub nce, ua expansintawm cov kua dej nrog qhov tshwm sim ntawm qhov nce siab, xws li hluav taws kub hauv lub cev lossis kev ua haujlwm tsis zoo ntawm lub tshuab cua txias.
Lwm qhov laj thawj, uas qhov kev nyab xeeb valve ncaws hauv, yog a tsis ua haujlwm ntawm cov cua compressed los yog fais fab mov, tiv thaiv kev nyeem kom raug ntawm cov sensors ntawm kev tswj ntsuas.
Tseem ceeb kuj yog thawj lub sij hawm thaum pib qhov system thawj zaug, los yog tom qab nws tau nresped tau ntev.
Qhov kev nyab xeeb valve ua haujlwm li cas?
- Lub siab siv los ntawm cov kua dej hauv lub cev valve ua rau ntawm qhov chaw ntawm lub disc, ua kom muaj zog F.
- Thaum F reaches tib yam li lub caij nplooj ntoos hlav quab yuam (lub caij nplooj ntoos hlav yog mounted nyob rau hauv lub valve thiab yav tas los kho los ntawm compression rau ib tug predetermined nqi), lub plug pib nqa tawm ntawm lub sealing cheeb tsam ntawm lub rooj zaum thiab process Cov kua dej pib ntws (qhov no tsis yog, txawm li cas los xij, qhov siab tshaj plaws ntawm lub valve).
- Nyob rau ntawm lub sijhawm no, ib txwm, lub siab ntws mus txuas ntxiv, ua rau, nrog rau qhov nce ntawm 10% (hu ua overpressure) piv rau cov teeb tsa siab, qhov kev nqa tam sim ntawd thiab ua tiav ntawm lub valve disc, uas tso tawm. process nruab nrab los ntawm lub valve qhov tsawg kawg nkaus cross-section.
- Thaum lub peev xwm ntawm qhov kev nyab xeeb valve yog sib npaug rau qhov ntws ntws tawm, lub siab hauv cov khoom tiv thaiv tseem nyob tas li. Txwv tsis pub, yog tias lub peev xwm ntawm kev ruaj ntseg valve siab tshaj qhov ntws tawm, qhov siab hauv cov khoom siv yuav txo qis. Nyob rau hauv cov ntaub ntawv no, lub disc, uas lub caij nplooj ntoos hlav quab yuam tseem ua, pib txo nws lifting (piv txwv li qhov deb ntawm lub rooj zaum thiab lub disc) kom txog rau thaum lub passage seem ntawm lub valve kaw (feem ntau yog ib tug txo - hu ua blowdown - sib npaug rau. 10% tsawg dua qhov teeb tsa siab) thiab process kua tsis ntws tawm.
Muaj pes tsawg hom kev ruaj ntseg li qub?
Nyob rau hauv cov ntsiab lus ntawm Cov cuab yeej siv siab (acronym PRD), qhov kev sib txawv tseem ceeb tuaj yeem ua rau ntawm cov khoom siv uas kaw dua thiab cov ntawd txhob kaw dua tom qab lawv txoj haujlwm. Hauv thawj pab pawg peb muaj rupture discs thiab tus pin ua cov khoom siv. Hauv qhov sib piv, pawg thib ob tau muab faib ua ncaj-loading thiab tswj cov khoom siv. Kev nyab xeeb li qub yog ib feem ntawm cov khoom siv uas kaw dua tom qab lawv cov haujlwm ua haujlwm los ntawm ib lossis ntau qhov chaw.
Tsis tas li ntawd, kev sib txawv ntxiv tuaj yeem ua tau raws li kev ua haujlwm ntawm cov li qub. Raws li peb tau pom los ntawm daim duab, muaj nqa tag nrho kev ruaj ntseg li qub thiab sib npaug kev ruaj ntseg li qub, kuj hu ua nyem li qub.
kev nyab xeeb nyem valve kev nyab xeeb nyem valve kev nyab xeeb nyem valve
kev nyab xeeb nyem valve kev nyab xeeb nyem valve kev nyab xeeb nyem valve
kev ruaj ntseg valve vs nyem valve
Dab tsi yog qhov txawv ntawm qhov kev nyab xeeb li qub thiab cov pob nyem nyem?
Siab ruaj ntseg li qub (lub npe PSV) thiab siab nyem li qub (acronym PRV) feem ntau tsis meej pem vim lawv muaj cov qauv zoo sib xws thiab kev ua tau zoo. Qhov tseeb, ob qho tib si li qub tau tso tawm cov kua dej thaum lub siab tshaj qhov teeb tsa tus nqi. Lawv qhov sib txawv feem ntau tsis quav ntsej, zoo li lawv sib pauv hloov tau hauv qee qhov kev tsim khoom. Qhov sib txawv tseem ceeb tsis yog nyob rau hauv lawv lub hom phiaj, tab sis nyob rau hauv hom kev ua haujlwm. Rau hauv qabstand qhov sib txawv ntawm ob, peb yuav tsum tau mus rau hauv cov lus txhais tau muab los ntawm ASME (American Society of Mechanical Engineers) Boiler & Pressure Vessel lossis BPVC .
cov kev ruaj ntseg valve yog ib qho khoom siv tswj tsis siv neeg siab ua haujlwm los ntawm lub siab zoo li qub ntawm cov kua dej ntws ntawm lub valve, siv rau kev siv roj lossis chav siv, nrog "nqa tag nrho” kev ua.
cov nyem valve (tseem hu ua 'overflow valve') yog ib qho khoom siv tsis siv neeg siab nyem ua haujlwm los ntawm lub siab zoo li qub ntawm lub valve. Nws qhib proportionally thaum lub siab tshaj qhov qhib quab yuam, feem ntau yog siv rau cov dej siv.
Zoo tshaj qhov ntau
Accessories rau kev nyab xeeb li qub
Kev nyab xeeb li qub nrog ntsuas / tiv thaiv hauv qab
Bellows hauv kev nyab xeeb valve muaj cov haujlwm hauv qab no:
1) balancing bellows: lav qhov kev nyab xeeb valve txoj haujlwm kom raug, tshem tawm lossis txwv qhov cuam tshuam ntawm backpressure, uas tuaj yeem raug yuam los yog tsim, kom muaj nuj nqis nyob rau hauv lub valve cov kev txwv.
2) kev tiv thaiv hauv qab: tiv thaiv spindle, spindle qhia thiab tag nrho cov kev ruaj ntseg valve lub sab sauv (nrog rau lub caij nplooj ntoos hlav) los ntawm kev sib cuag nrog process Cov kua dej, ua kom txhua qhov kev txav mus los muaj kev ncaj ncees thiab pab kom tsis txhob muaj kev puas tsuaj vim yog cristallization lossis polymerisation, corrosion lossis puas ntawm cov khoom siv sab hauv, uas tuaj yeem cuam tshuam qhov kev nyab xeeb ntawm lub valve txoj haujlwm raug.
Kev nyab xeeb valve equipped nrog pneumatic actuator
Lub pneumatic actuator tso cai rau tag nrho disc nqa, tswj chaw taws teeb thiab ntawm nws tus kheej los ntawm kev ua haujlwm siab process kua los.
Kev nyab xeeb valve equipped nrog disc thaiv cov cuab yeej
Besa tuaj yeem muab nws txoj kev nyab xeeb li qub nrog "test gag", uas muaj ob lub hau, ib qho liab thiab ib qho ntsuab. Cov ntsia hlau liab, ua ntev dua li ntsuab, thaiv qhov rais ntawm lub disc, tiv thaiv lub valve los ntawm qhib.
Kev nyab xeeb valve equipped nrog pneumatic valve equipped nrog lift indicator
Qhov taw qhia nqa kev ua haujlwm yog txhawm rau txheeb xyuas lub disc nqa, piv txwv li lub valve qhib.
Kev nyab xeeb valve equipped nrog vibrations stabilizer
Lub vibration stabilizer txo mus rau qhov tsawg kawg nkaus oscillations thiab vibrations uas tuaj yeem tshwm sim thaum lub sij hawm relieving, ua rau lub valve ua haujlwm tsis zoo.
Resilient foob kev nyab xeeb li qub
Txhawm rau kom tau txais kev sib khi zoo dua ntawm qhov chaw disc thiab lub rooj zaum, nws muaj peev xwm muab lub valve nrog lub foob zoo. Qhov kev daws teeb meem no yog ua tom qab Technical Department tsom xam thiab txiav txim siab txog kev tawm dag zog: siab, kub, xwm thiab lub cev ntawm lub cev process nruab nrab.
Resilient foob tau txais nrog cov ntaub ntawv hauv qab no: viton ®, NBR, neoprene ®, Kalrez ®, Kaflon ™, EPDM, PTFE, PEB™
Kev nyab xeeb li qub nrog lub tsho cua sov
Nyob rau hauv cov ntaub ntawv uas muaj kuab heev, nplaum los yog muaj peev xwm crystallising media, kev nyab xeeb valve tuaj yeem muab nrog lub tsho cua sov, uas yog cov ntaub ntawv stainless hlau welded rau ntawm lub valve lub cev, ntim nrog cov kua dej kub (steam, dej kub, thiab lwm yam.) lav lub process media flowability ntawm lub valve.
Stellited sealing nto
Txhawm rau kom tau txais kev txhim kho corrosion zoo dua thiab hnav tsis kam ntawm disc thiab lub rooj zaum sealing nto, ntawm kev thov lossis tom qab Tech. Dept. tsom xam, kev ruaj ntseg li qub yog muab nrog disc thiab lub rooj zaum muaj stellited sealing nto. Cov tshuaj no yog pom zoo nyob rau hauv cov ntaub ntawv ntawm kev kub siab thiab kub qhov tseem ceeb, abrasive media, xov xwm nrog cov khoom, cavitation.
Combined daim ntawv thov kev ruaj ntseg li qub thiab rupture disc
Besa® kev nyab xeeb li qub yog tsim rau installation ua ke nrog rupture discs teem ib sab ntug dej los yog downstream ntawm lub valve. Rupture discs siv nyob rau hauv xws li daim ntawv thov yuav tsum tau guaranteed tsis-fragmenting, los ntawm cov yam ntxwv point of view. Rau cov dej dynamics, ntawm qhov tod tes, ib qho kev sib tsoo disc uas nyob rau ntawm lub valve yuav tsum tau muab tso rau hauv xws li:
- rupture disc ntws diameters loj dua los yog sib npaug rau kev ruaj ntseg valve lub nominal inlet txoj kab uas hla
- tag nrho lub siab poob (xam los ntawm lub nominal txaus muaj peev xwm multiplied los ntawm 1.15) los ntawm cov kev tiv thaiv tank inlet mus rau lub valve inlet flange yog tsawg tshaj li 3% ntawm kev ruaj ntseg valve lub zoo teem siab. Qhov chaw nruab nrab ntawm lub rupture disc thiab lub valve yuav tsum tau muab tso rau hauv 1/4 "pipe hauv xws li ib txoj hauv kev los xyuas kom meej tias atmospheric siab zoo thiab ruaj ntseg. Rau qhov tseeb sizing ntawm discs nyob rau hauv cov nqe lus ntawm cov dej dynamics, qhov tseem ceeb Fd (EN ISO 4126-3 Nplooj 12. 13) yuav tsum muab coj mus rau hauv tus account, thiab yuav tsum tau muab coj los ua 0. 9.
Daim ntawv thov ntawm qhov sib tsoo disc sab sauv ntawm lub valve kev nyab xeeb tuaj yeem pom zoo rau cov xwm txheej hauv qab no:
- thaum ua hauj lwm nrog aggressive media, cais inlet sab ntawm lub valve lub cev los ntawm continuos tiv tauj nrog process kua, tsis txhob siv cov khoom kim heev;
- Thaum muab cov hlau nplaum, kom tsis txhob muaj qhov sib tsoo ntawm cov kua nruab nrab ntawm lub rooj zaum / disc.
Cov ntawv pov thawj thiab kev pom zoo
Besa® kev nyab xeeb li qub yog tsim, manufactured thiab xaiv raws li cov European Cov Lus Qhia 2014/68/EU (New PED), 2014 / 34 / EU (ATEX) thiab API 520 526 thiab 527. Besa® cov khoom kuj tau pom zoo los ntawm RINA® (Besa yog ib tug lees paub raws li cov chaw tsim khoom) thiab DNV GL®.
Thaum thov Besa muaj kev pab tag nrho rau cov kev ua tau zoo ntawm kev xeem los ntawm lub cev tseem ceeb.
Ntawm no hauv qab no koj tuaj yeem pom peb cov ntawv pov thawj tseem ceeb tau txais rau kev nyab xeeb li qub.
Besa kev ruaj ntseg li qub yog CE PED ntawv pov thawj
cov PED Cov lus qhia muab rau cov cim ntawm cov khoom siv siab thiab txhua yam uas qhov siab tshaj plaws tso cai siab (PS) ntau dua 0.5 bar. Cov khoom siv no yuav tsum muaj qhov loj me raws li:
- thaj chaw ntawm kev siv (siab, kub)
- hom kua siv (dej, roj, hydrocarbons, thiab lwm yam)
- qhov loj / siab piv xav tau rau daim ntawv thov
Lub hom phiaj ntawm Cov Lus Qhia 97/23/EC yog ua kom muaj kev sib haum xeeb rau txhua txoj cai ntawm lub xeev uas koom nrog European Community ntawm cov cuab yeej siv siab. Tshwj xeeb, cov txheej txheem rau kev tsim, tsim khoom, tswj, kev sim thiab thaj chaw ntawm daim ntawv thov raug tswj. Qhov no tso cai rau kev khiav dawb ntawm cov khoom siv siab thiab cov khoom siv ntxiv.
Cov lus qhia yuav tsum ua raws li cov kev cai tseem ceeb ntawm kev nyab xeeb uas cov neeg tsim khoom yuav tsum ua raws li cov khoom lag luam thiab kev tsim khoom process. Cov chaw tsim khoom yuav tsum tau kwv yees thiab txo qhov kev pheej hmoo ntawm cov khoom tso rau hauv kev ua lag luam.
Certification process
Lub koom haum ua kev tshuaj xyuas thiab kev tswj hwm raws li ntau theem ntawm kev saib xyuas ntawm lub tuam txhab cov txheej txheem zoo. Ces, lub PED Lub koom haum tso tawm CE daim ntawv pov thawj rau each hom thiab cov qauv ntawm cov khoom thiab, yog tias tsim nyog, kuj rau kev kuaj zaum kawg ua ntej commissioning.
cov PED lub koom haum ces mus nrog:
- Kev xaiv cov qauv rau daim ntawv pov thawj / labeling
- Kev tshuaj xyuas cov ntaub ntawv technical thiab cov ntaub ntawv tsim
- Lub ntsiab lus ntawm kev soj ntsuam nrog cov neeg tsim khoom
- Kev txheeb xyuas ntawm cov kev tswj hwm no hauv kev pabcuam
- Lub cev ces muab daim ntawv pov thawj CE thiab daim ntawv lo rau cov khoom tsim
PED PHEEJICIM PED WEBSITE
Besa kev ruaj ntseg li qub yog CE ATEX ntawv pov thawj
ATEX - Cov khoom siv rau cov huab cua uas muaj peev xwm tawg tau (94/9/EC).
"Cov Lus Qhia 94/9/EC, paub zoo dua los ntawm cov ntawv sau ATEX, tau siv nyob rau hauv ltalis los ntawm Thawj Tswj Hwm Tsab Cai 126 ntawm 23 Lub Peb Hlis 1998 thiab siv rau cov khoom tsim los siv rau hauv qhov muaj peev xwm tawg tau. Nrog kev nkag mus rau hauv lub zog ntawm lub ATEX Cov lus qhia, cov standards yav dhau los raug muab tshem tawm thiab txij li Lub Xya Hli 1, 2003 nws raug txwv tsis pub ua lag luam cov khoom lag luam uas tsis ua raws li cov cai tshiab.
Cov Lus Qhia 94/9/EC yog 'txoj hauv kev tshiab' cov lus qhia uas lub hom phiaj tso cai rau kev txav mus los dawb ntawm cov khoom hauv zej zog. Qhov no ua tiav los ntawm kev sib haum xeeb raws li txoj cai kev nyab xeeb, ua raws li kev pheej hmoo raws li txoj hauv kev. Nws kuj tseem xav kom tshem tawm lossis, tsawg kawg, txo qhov kev pheej hmoo uas tshwm sim los ntawm kev siv qee yam khoom hauv lossis cuam tshuam rau qhov muaj peev xwm tawg tau. Qhov no
txhais tau hais tias qhov yuav tshwm sim ntawm huab cua tawg yuav tsum tau txiav txim siab tsis yog ntawm "ib-tawm" hauv paus thiab los ntawm qhov kev xav zoo li qub, tab sis tag nrho cov kev ua haujlwm uas yuav tshwm sim los ntawm process yuav tsum tau muab coj mus rau hauv tus account.
Cov Lus Qhia npog cov khoom siv, txawm tias nyob ib leeg lossis ua ke, npaj rau kev teeb tsa hauv "zones" cais raws li kev phom sij; cov txheej txheem tiv thaiv ua haujlwm kom nres lossis muaj kev tawg; Cheebtsam thiab cov khoom tseem ceeb rau kev ua haujlwm ntawm cov khoom siv lossis cov tshuab tiv thaiv; thiab tswj thiab kho cov cuab yeej kev nyab xeeb muaj txiaj ntsig los yog tsim nyog rau kev nyab xeeb thiab txhim khu kev qha ntawm cov cuab yeej siv lossis kev tiv thaiv.
Ntawm cov txheej txheem tshiab ntawm Cov Lus Qhia, uas suav nrog txhua qhov kev phom sij tawg ntawm txhua yam (hluav taws xob thiab tsis yog hluav taws xob), cov hauv qab no yuav tsum tau hais txog:
- Kev taw qhia txog kev noj qab haus huv thiab kev nyab xeeb tseem ceeb.
- Kev siv tau rau ob qho tib si mining thiab cov ntaub ntawv saum npoo.
- Kev faib cov khoom siv rau hauv pawg raws li hom kev tiv thaiv tau muab.
- Kev saib xyuas kev tsim khoom raws li lub tuam txhab ua haujlwm zoo.
Cov Lus Qhia 94/9/EC faib cov cuab yeej ua ob pawg loj:
- Pawg 1 (Qeb M1 thiab M2): cov cuab yeej siv thiab kev tiv thaiv kev npaj rau siv hauv mines
- Pab Pawg 2 (Qeb 1,2,3): Cov cuab yeej siv thiab kev tiv thaiv kab mob tsim los siv rau saum npoo. (85% ntawm industrial ntau lawm)
Kev faib tawm ntawm thaj chaw teeb tsa ntawm cov khoom siv yuav yog lub luag haujlwm ntawm tus neeg siv kawg; yog li ntawd raws li qhov kev pheej hmoo ntawm cov neeg siv khoom (xws li zone 21 lossis zone 1) cov chaw tsim khoom yuav tsum muab cov khoom tsim nyog rau thaj tsam ntawd.
ATEX PHEEJICIM ATEX WEBSITE
Besa kev ruaj ntseg li qub yog RINA ntawv pov thawj
RINA tau ua haujlwm raws li lub koom haum pov thawj thoob ntiaj teb txij li xyoo 1989, raws li qhov tshwm sim ncaj qha ntawm nws cov keeb kwm kev cog lus los tiv thaiv kev nyab xeeb ntawm tib neeg lub neej hauv hiav txwv, tiv thaiv cov khoom ntiag tug thiab tiv thaiv cov marine ib puag ncig, hauv kev txaus siab ntawm zej zog, raws li tau teev tseg hauv nws Txoj Cai, thiab hloov nws txoj kev paub, tau txais ntau tshaj li ib puas xyoo, mus rau lwm qhov chaw. Raws li lub koom haum muab ntawv pov thawj thoob ntiaj teb, nws tau cog lus los tiv thaiv tib neeg lub neej, khoom vaj khoom tsev thiab ib puag ncig, hauv kev nyiam ntawm zej zog, thiab siv nws ntau pua xyoo ntawm kev paub rau lwm yam.
RINA PHEEJRINA WEBSITE
Eurasian Conformity cim
cov Eurasian Conformity cim (EAC, Russia: Евразийское соответствие (ЕАС)) yog daim ntawv pov thawj los qhia cov khoom lag luam uas ua raws li tag nrho cov kev cai ntawm Eurasian Customs Union. Nws txhais tau tias cov EAC-marked cov khoom ua tau raws li tag nrho cov kev cai ntawm cov txheej txheem kev coj ua thiab tau dhau tag nrho cov txheej txheem ntsuas kev ua raws.
EAC PHEEJEAC WEBSITE
Besa kev nyab xeeb valves lub ntsiab teb ntawm daim ntawv thov
https://www.youtube.com/watch?v=q-A40IEZlVY
Txij li thaum 1946
Hauv teb nrog koj
BESA tau raug tsim kev nyab xeeb li qub rau ntau xyoo, rau ntau yam kev teeb tsa, thiab peb cov kev paub dhau los muab kev lees paub zoo tshaj plaws. Peb ua tib zoo kawm each system thaum lub sij hawm hais lus, nrog rau cov kev cai tshwj xeeb lossis kev thov, kom txog rau thaum peb pom cov kev daws teeb meem zoo tshaj plaws thiab qhov tsim nyog tshaj plaws rau koj lub installation.
1946
Foundation xyoo
6000
Qhuav muaj peev xwm
999
Cov neeg siv khoom nquag
