Cov hmoov txhuas hauv cov dej haus ua rau muaj kev phom sij loj rau kev noj qab haus huv, tshwj xeeb tshaj yog rau cov menyuam yaus. UK cov ntaub ntawv saib xyuas kev noj qab haus huv txuas ua rau muaj kev cuam tshuam rau neurodevelopmental deficits thiab kev coj tus cwj pwm tsis zoo.Valve fittingsua los ntawm cov khoom tsis muaj hmoov txhuas pab tiv thaiv kev sib kis. Cov khoom lag luam muaj ntawv pov thawj ua kom muaj kev nyab xeeb ntawm cov dej xau thiab tiv thaiv cov neeg muaj kev phom sij los ntawm kev phom sij.
Ntsiab Cai
- Cov khoom pov thawj uas tsis muaj txhuas-dawb valve fittings, zoo li cov uas muaj kev pom zoo WRAS, xyuas kom muaj kev nyab xeeb ntawm cov dej haus los ntawm kev tiv thaiv cov hmoov txhuas thiab ua tau raws li UK cov qauv kev noj qab haus huv.
- Xaiv cov ntaub ntawv zoo xws li DZR tooj dag, stainless hlau, lossis cov ntawv pov thawj yas ua kom lub zog ruaj khov thiab tiv thaiv dej zoo nyob rau lub sijhawm.
- Kev tshuaj xyuas tsis tu ncua thiab kev saib xyuas kom zoo ntawm valve fittings pab tiv thaiv kom tsis txhob xeb thiab xeb, ua kom lub neej ntev dua thiab tiv thaiv kev noj qab haus huv rau pej xeem.
Daim ntawv pov thawj thiab kev nyab xeeb ntawm Valve Fittings
WRAS Kev Pom Zoo thiab UK Cov Kev Cai Dej Haus
Kev pom zoo WRAS sawv ua tus qauv ntsuas kev nyab xeeb thiab ua raws li UK cov dej haus. Txoj Cai Tswjfwm Saib Xyuas Dej (WRAS) ua kom ntseeg tau tias cov khoom siv valve ua tau raws li cov kev cai nruj heev los tiv thaiv pej xeem kev noj qab haus huv. Cov khoom siv yuav tsum tsis muaj tshuaj lom thiab muaj kev nyab xeeb rau cov dej haus, tiv thaiv kev sib kis ntawm txhua theem. Cov neeg tsim khoom tsim cov li qub los tiv thaiv corrosion thiab degradation, kom ntseeg tau ntev. Ua raws li UK Water Supply (Water Fittings) Regulations tseem yuav tsum tau ua rau txhua qhov kev teeb tsa.
WRAS-pom zoo valve fittings yuav tsum ua tau raws li ob peb yam tseem ceeb:
- Kev siv cov khoom siv nyab xeeb, tsis muaj tshuaj lom neeg tsim nyog rau cov dej haus
- Mechanical haum thiab tsis kam mus corrosion
- Tsim nyog sizing kom phim cov kav dej thiab dej ntws
- Kev ntsuas kub thiab ntsuas kub uas ua raws li qhov xav tau ntawm qhov system
- Tau tshaj hom kev sib txuas, xws li BSP threaded lossis compression fittings
- Txheeb xyuas WRAS cov ntaub ntawv pov thawj ua ntej kev teeb tsa
Valve fittings uas ua tau raws li cov qauv no pab tswj cov dej kom zoo thiab kev ncaj ncees. Cov qauv tsim thiab cov ntaub ntawv yuav tsum tsis txhob hnov qab nrog dej los yog leach yam tsis zoo. WRAS daim ntawv pov thawj muab kev lees paub tias cov khoom yuav tsis cuam tshuam txog dej nyab xeeb lossis kev ntseeg siab.
Ntiaj teb no Standards rau Valve Fittings
Valve fittings siv hauv cov dej haus yuav tsum tau ua raws li cov qauv hauv tebchaws thiab thoob ntiaj teb. Ntau cov ntawv pov thawj thoob ntiaj teb lees paub ua kom cov khoom muaj kev nyab xeeb thiab kev ua tau zoo thoob plaws cheeb tsam sib txawv. Cov no suav nrog:
- Kiwa Water Mark (Netherlands): Daim ntawv pov thawj rau cov khoom hauv kev sib cuag nrog dej haus
- NSF (North America): Daim ntawv pov thawj rau cov kav dej thiab cov khoom siv hu rau cov dej haus
- WRAS (Great Britain): Daim ntawv pov thawj rau kev ua raws li UK cov cai tswj dej
- DVGW-W270 (Lub Tebchaws Yelemees): Cov ntawv pov thawj suav nrog kev kuaj kab mob bacteriological
- ACS (Fabkis): Yuav tsum tso cai rau cov ntaub ntawv hauv kev sib cuag nrog dej haus
- WaterMark (Australia thiab New Zealand): Yuav tsum tau ntawv pov thawj rau cov kav dej thiab cov khoom siv dej
| Standard Number | Kev piav qhia | Scope |
|---|---|---|
| ISO 1452-4: 2009 | Cov kav dej yas rau cov dej xa dej - PVC-U - Ntu 4: Valves | Npog cov yas tsis muaj PVC li qub uas siv hauv cov kav dej |
| ISO 1452-5: 2009 | Plastics piping systems rau dej - PVC-U - Ntu 5: Fitness rau lub hom phiaj | Ua kom lub cev muaj zog rau lub hom phiaj nrog rau li qub |
| ISO 2531: 1998 thiab 2009 | Cov kav dej hlau, fittings, accessories thiab pob qij txha rau kev siv dej | Qhia meej txog qhov yuav tsum tau ua rau cov khoom siv hlau nplaum thiab fittings |
| Daim ntawv pov thawj ISO 11177: 2016 & 2019 | Vitreous thiab porcelain enamels - Enamelled li qub thiab fittings rau cov dej haus | Cov kev xav tau zoo thiab kev sim rau enamelled li qub hauv dej |
Cov ntawv pov thawj thoob ntiaj teb xws li ISO, ASTM, ANSI / ASME, DIN, JIS, API, NSF, thiab DVGW npog ntau yam kev xav tau. Cov qauv no hais txog qhov ntev, cov khoom siv, kev sim, kev ua haujlwm, thiab kev nyab xeeb. UK cov ntawv pov thawj tshwj xeeb, suav nrog Cov Qauv Askiv (BS) thiab BSI Kitemark, tsom mus rau cov kev cai hauv tebchaws thiab kev lees paub zoo. BSI Kitemark tau lees paub ob qho tib si hauv UK thiab thoob ntiaj teb, txhawb nqa European CE daim ntawv pov thawj. UK cov qauv feem ntau sib haum nrog European thiab ISO cov qauv, tab sis khaws cov kev cai tshwj xeeb rau qee yam fittings. Kev pom zoo WRAS hais txog kev ua raws li UK cov cai tswj dej, ua kom cov khoom ua tau raws li cov qauv ntsuas thoob ntiaj teb thiab lub teb chaws.
Daim ntawv pov thawj txhais li cas rau kev noj qab haus huv thiab kev ua raws cai
Daim ntawv pov thawj ntawm valve fittings plays lub luag haujlwm tseem ceeb hauv kev ua raws li kev cai lij choj thiab kev tiv thaiv kev noj qab haus huv rau pej xeem. WRAS daim ntawv pov thawj ua kom ntseeg tau tias cov li qub tsis paug cov dej haus los yog ua rau pov tseg, ua raws li UK cov cai tswj dej. Cov neeg muab dej tso siab rau WRAS-pom zoo cov khoom kom tsis txhob muaj kev raug cai, xws li kev nplua lossis kev foob. Tsis muaj ntawv pov thawj li qub tuaj yeem ua rau muaj kev sib kis, kev ua haujlwm tsis ua haujlwm, thiab raug nplua raws cai.
| Yam | Kev piav qhia |
|---|---|
| Kev cai lij choj | Cov dej fittings yuav tsum ua raws li Kev Cai Dej Fittings los tiv thaiv kev sib kis, pov tseg, thiab siv dej tsis raug hauv tebchaws Askiv thiab Wales. |
| Lub luag haujlwm ntawm Daim Ntawv Pov Thawj | WRAS daim ntawv pov thawj muab kev lees paub tias valve fittings ua tau raws li cov qauv kev cai lij choj thiab tsim nyog rau kev teeb tsa. |
| Kev tswj hwm | UK cov chaw muab dej, xws li United Utilities, muaj lub luag haujlwm raug cai los tswj cov kev cai no los ntawm kev tshuaj xyuas cov kav dej thiab tshaj tawm cov ntawv ceeb toom rau kev tsis ua raws cai. |
| Qhov tshwm sim ntawm Kev Tsis Ua Raws Cai | Kev ua txhaum cai yog kev ua txhaum cai uas tuaj yeem ua rau raug foob, kev ua txhaum cai suav nrog kev txiav tawm ntawm cov dej, thiab kev nplua rau kev cai lij choj. |
| Txhawb Kev Ua Raws Cai | Daim ntawv pov thawj pab cov neeg muab khoom siv dej tshawb xyuas cov fittings 'ua raws, ua kom yooj yim rau kev tshuaj xyuas thiab kev tswj hwm kev tswj hwm kev noj qab haus huv rau pej xeem. |
WRAS yog lub cev lees paub ua los ntawm UK cov neeg xa dej. Lawv txhawb nqa kev ua raws li Txoj Cai Kev Siv Dej (Dej Fittings) Cov Cai. Siv WRAS-pom zoo valve fittings yog txoj kev txhim khu kev qha tshaj plaws los ua kom pom kev ua raws cai thiab zam kev pheej hmoo raug cai.
Cov ntawv pov thawj valve fittings pab cov neeg xa khoom dej kom muaj kev nyab xeeb thiab ua haujlwm tau zoo. Daim ntawv pov thawj txhawb kev soj ntsuam thiab kev tswj hwm, kom ntseeg tau tias tsuas yog cov khoom ua raws cai nkag mus rau hauv kev ua lag luam. Cov txheej txheem no tiv thaiv pej xeem kev noj qab haus huv thiab txhawb nqa kev ncaj ncees ntawm UK cov dej haus.
Xaiv Lead-Free, Zero-Leak Valve Fittings
Qhov tseem ceeb ntawm cov khoom siv lead-dawb hauv Valve Fittings
Cov ntaub ntawv tsis muaj txhuas ua lub luag haujlwm tseem ceeb hauv kev tiv thaiv pej xeem kev noj qab haus huv. UK cov kev cai, suav nrog Cov Khoom Siv Dej (Dej Fittings) Cov Cai 1999, tau teeb tsa cov qauv nruj rau cov khoom uas tuaj yeem cuam tshuam nrog dej haus. Cov neeg tsim khoom tsim lub valve fittings siv cov alloys xws li dezincification-resistant (DZR) tooj dag, uas txwv cov ntsiab lus tsis pub ntau tshaj 0.25% los ntawm qhov hnyav ntawm qhov chaw ntub dej. Txoj hauv kev no ua raws li ob qho tib si UK thiab European Union cov lus qhia, kom ntseeg tau tias cov dej haus tseem tsis muaj cov kab mob phem. DZR tooj dag muaj cov kav ntev thiab kev tiv thaiv corrosion, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau cov dej haus. Stainless hlau thiab cov yas siab heev kuj muab cov kev xaiv tsis muaj txhuas, txhawb kev ua raws thiab kev nyab xeeb mus ntev.
Tswv yim: Nco ntsoov xyuas WRAS kev pom zoo thaum xaiv valve fittings. Cov ntawv pov thawj no lees paub tias cov khoom ua tau raws li UK cov qauv kev noj qab haus huv thiab kev nyab xeeb rau cov ntsiab lus txhuas thiab cov khoom siv zoo.
Cov khoom siv lead-dawb uas siv hauv UK Dej Dej Valve Fittings:
- Dezincification-resistant (DZR) tooj dag
- Stainless hlau (qib 304 thiab 316)
- Composite plastics (xws li PVC, PTFE, thiab polyurethane)
Hom Valve Fittings rau Kev Siv Dej Haus
Valve fittings ua haujlwm sib txawv hauv UK cov dej haus. Kev xaiv nyob ntawm daim ntawv thov, xav tau kev tswj xyuas, thiab kev sib raug zoo nrog cov khoom siv. Hose fittings yuav tsum phim lub hose txoj kab uas hla kom tiv thaiv kom tsis txhob xau thiab tswj cov dej kom zoo. Cov khoom sib raug zoo tseem tseem ceeb, vim nws cuam tshuam rau kev nyab xeeb thiab kav ntev.
| Hom Valve | Kev piav qhia thiab Daim Ntawv Thov |
|---|---|
| Pob Valves | Spherical disc tswj ntws; ruaj nrog zoo sealing; zoo tagnrho rau kev kaw ntom nti. |
| Xyuas Valves | Tiv thaiv rov qab; xyuas kom meej ib txoj kev khiav; tseem ceeb rau kev tiv thaiv kab mob; ua haujlwm tau. |
| Siab Txo Valves | Txo cov dej nkag mus rau qib kev nyab xeeb; tiv thaiv cov kav dej los ntawm kev puas tsuaj thiab xau; tswj qhov system efficiency. |
| Rooj vag Valves | Siv los ua kom tsis muaj dej ntws; haum rau kev txij nkawm lossis kev kaw thaum muaj xwm txheej ceev; ruaj khov thiab ruaj ntseg sealing. |
| Npauj Npaim Valves | Tswj kev khiav nrog ib tug rotating disc; sib dua thiab raug nqi; siv rau hauv cov kav dej loj; ceev kaw. |
| Solenoid li qub | Hluav taws xob tswj; siv nyob rau hauv automated systems rau meej txaus tswj; nquag siv hauv kev lag luam / kev lag luam. |
Lub cev lub cev tuaj yeem siv tooj dag tsis muaj hlau lead, stainless hlau, lossis cov yas sib xyaw. Cov ntsaws ruaj ruaj feem ntau muaj NBR (Nitrile Buna Roj Hmab) rau cov kua nruab nrab lossis EPDM (Ethylene Propylene Diene Monomer) kom muaj cua sov siab dua. Cov ntaub ntawv pov thawj xws li PVC thiab polyurethane raug pom zoo rau cov hoses thiab couplings, ua kom muaj kev nyab xeeb thiab kav ntev.
Material Compatibility thiab Durability
Material compatibility ncaj qha cuam tshuam lub neej ntev thiab kev ntseeg siab ntawm valve fittings. Brass thiab stainless hlau muab lub zog txhua yam, tab sis kev xaiv tsis raug tuaj yeem ua rau muaj teeb meem corrosion. Dezincification-resistant tooj dag resists corrosion thiab tswj lub zog, thaum stainless hlau muaj kev tiv thaiv zoo tshwj tsis yog nyob rau hauv high-chloride ib puag ncig, qhov pitting yuav tshwm sim. Cov yas xws li PTFE xa cov tshuaj tiv thaiv zoo heev thiab tiv thaiv kev degradation.
Valve fittings raug kuaj nruj raws li WRAS daim ntawv pov thawj, suav nrog kev ntsuas kev hnov lus, kev ntsuam xyuas kev loj hlob ntawm microbial, thiab kev txheeb xyuas cov hlau rho tawm. Cov kev sim no simulate cov xwm txheej hauv ntiaj teb tiag tiag, kom ntseeg tau tias cov ntaub ntawv tsis muaj kev cuam tshuam rau cov dej zoo lossis kev ua haujlwm ntev. OEM cov koom tes txhawb nqa cov tuam txhab nrog kev txawj ntse, pab tswj cov khoom zoo thoob plaws hauv lub neej.
Nco tseg: Hybrid designs combining hlau thiab plastics optimize ob durability thiab kev ua tau zoo. Nco ntsoov xav txog cov dej chemistry thiab ib puag ncig thaum xaiv cov khoom.
Kev txhim kho, tu, thiab tiv thaiv corrosion
Kev txhim kho kom zoo thiab kev saib xyuas tsis tu ncua ncua lub neej ntawm valve fittings thiab tiv thaiv corrosion. Kev tshuaj xyuas niaj hnub pab tshawb pom cov tsos mob thaum ntxov ntawm kev hnav, xeb, lossis pitting. Cov kev kuaj pom pom kev tsis muaj xim thiab cov pa tawm ib puag ncig cov ntsaws ruaj ruaj kom ntseeg tau tias muaj kev ncaj ncees. Kev tu cov txheej txheem suav nrog kev txhuam txhua yam, tshuaj lom neeg muaj kev nyab xeeb, thiab yaug nrog dej lossis cov kuab tshuaj.
Cov neeg ua haujlwm siv cov npog tiv thaiv los tiv thaiv li qub los ntawm huab cua phem. Kev tswj ib puag ncig xws li kev tswj cov av noo thiab cov rwb thaiv tsev kub ntxiv txo qhov kev pheej hmoo corrosion. Kev siv cov tshuaj tiv thaiv corrosion-anodic, cathodic, sib xyaw, lossis volatile-tiv thaiv li qub thaum khaws cia thiab ua haujlwm. Kev kho deg zoo li epoxy, PTFE, polyamide, thiab polyurethane coatings txhim khu kev tiv thaiv corrosion.
- Kev tshuaj xyuas niaj hnub rau corrosion, hnav, thiab xau
- Ntxuav thiab yaug kom tshem tawm cov deposits
- Kev siv cov npog tiv thaiv thiab kev tswj ib puag ncig
- Daim ntawv thov ntawm corrosion inhibitors thiab nto txheej
Corrosion pheej hmoo nce nrog cov nqi qis, uas ua rau cov khib nyiab los daws thiab tsim cov crevices. Cov dej ntws ntau dua tuaj yeem ua rau yaig thiab cavitation. Ceramic linings thiab polyurethane coatings txhim khu kev tiv thaiv rau cov teebmeem no. Kev tiv thaiv kev saib xyuas thiab kev saib xyuas tus mob tseem ceeb heev rau kev ncua lub valve thiab twj tso kua mis lub neej hauv cov dej haus.
Muaj ntawv pov thawj, tsis muaj txhuas, xoom-leak valve fittings tiv thaiv pej xeem kev noj qab haus huv, txhawb dej nyab xeeb, thiab xa cov nqi mus sij hawm ntev.
| Tau txais txiaj ntsig | Kev cuam tshuam |
|---|---|
| Durability | Kev ntsuam xyuas dav kom ntseeg tau tias kev ua tau zoo thiab kev txuag dej. |
| Dej nyab xeeb | Cov khoom tsis muaj tshuaj lom, corrosion-resistant cov ntaub ntawv tiv thaiv kab mob txaus ntshai. |
| Kev ntseeg siab ntawm cov neeg siv khoom | Daim ntawv pov thawj tsim kev ntseeg siab rau cov neeg muab dej thiab kev ua haujlwm zoo. |
FAQ
WRAS kev pom zoo txhais li cas rau valve fittings?
Kev pom zoo WRAS lees paub tias cov khoom siv valve ua tau raws li UK cov qauv kev nyab xeeb dej. Lawv siv cov ntaub ntawv tsis muaj tshuaj lom thiab raug kuaj nruj heev. Cov neeg muab khoom siv dej tso siab rau WRAS-cov khoom muaj ntawv pov thawj rau kev ua raws cai.
Tswv yim: Nco ntsoov xyuas WRAS daim ntawv pov thawj ua ntej kev teeb tsa.
Cov ntaub ntawv dab tsi ua kom tsis muaj hlau lead-dawb valve fittings?
Cov neeg tsim khoom siv DZR tooj dag, stainless hlau, thiab cov ntawv pov thawj yas. Cov ntaub ntawv no tiv taus corrosion thiab tsis leaching cov teeb meem tshuaj. Lawv txhawb kev nyab xeeb dej mus ntev.
- DZR tooj dag
- Stainless hlau
- PVC thiab PTFE yas
Ntau npaum li cas cov neeg ua haujlwm yuav tsum tshuaj xyuas valve fittings?
Cov neeg ua haujlwm yuav tsum tau tshuaj xyuas lub valve fittings txhua rau lub hlis. Kev kuaj xyuas tsis tu ncua pab tshawb xyuas cov xau, corrosion, thiab hnav. Kev tshawb pom ntxov tiv thaiv kev kis kab mob thiab ua rau lub neej ntev.
| Kev soj ntsuam zaus | Pom zoo ua |
|---|---|
| Txhua 6 lub hlis | Visual check rau leaks |
| Txhua xyoo | Ntxuav thiab sim ua haujlwm |
Post lub sij hawm: Aug-13-2025