Lub valve kev nyab xeeb yog ib qho khoom siv tsis siv neeg kev nyab xeeb uas tuaj yeem tso tawm sai sai thaum lub siab siab dhau los tiv thaiv kev sib tsoo tawg.Nws yog txoj kab kawg ntawm kev tiv thaiv kev sib tsoo ntawm lub tshuab hluav taws xob hluav taws xob thiab tseem yog ib qho tseem ceeb ntawm cov cuab yeej siv los ua kom lub neej muaj kev nyab xeeb thiab cov khoom siv ruaj khov.Feem ntau hais lus, lub tshuab hluav taws xob yuav tsum tau nruab nrog tsawg kawg ob qhov kev nyab xeeb li qub.Feem ntau hais lus, qhov ntsuas kev hloov pauv ntawm qhov kev nyab xeeb valve yuav tsum tsawg dua li qhov ua tau zoo tshaj plaws ntawm lub tshuab hluav taws xob ua haujlwm kom ntseeg tau tias kev ua haujlwm li qub ntawm qhov siab tshaj plaws.
Kev saib xyuas thiab kev saib xyuas ntawm kev nyab xeeb li qub kuj tseem ceeb heev.Thaum siv, qhov tseeb thiab rhiab heev ntawm qhov kev nyab xeeb valve yuav tsum tau kuaj xyuas tsis tu ncua, thiab kev saib xyuas yuav tsum tau ua nruj me ntsis raws li cov lus qhia rau kev siv thiab tu phau ntawv.Yog tias pom pom tias tsis ua haujlwm lossis ua haujlwm tsis zoo hauv qhov kev nyab xeeb valve, nws yuav tsum tau hloov lossis kho lub sijhawm kom ntseeg tau tias kev ua haujlwm nyab xeeb ntawm lub tshuab hluav taws xob.
Yog li ntawd, qhov kev nyab xeeb valve nyob rau hauv lub chav generator yog ib qho khoom siv tseem ceeb.Nws tsis yog tsuas yog kab kawg ntawm kev tiv thaiv kom muaj kev nyab xeeb ntawm cov neeg ua haujlwm, tab sis kuj yog ib qho kev ntsuas tseem ceeb los tiv thaiv kev ncaj ncees thiab kev ua haujlwm ruaj khov ntawm cov khoom siv.Txhawm rau kom muaj kev nyab xeeb ntawm lub tshuab hluav taws xob ua haujlwm, peb yuav tsum tau them sai sai rau ntau yam xws li kev xaiv, kev teeb tsa, kev saib xyuas thiab kev saib xyuas ntawm qhov kev nyab xeeb valve.