搜索
止回閥的最常見的問題有時我們過於繁忙或專注於其他事情，我們忘記了找出原因可以幫助解決問題。常見的單向閥的問題包括噪音（水錘），振動，反向流動，堅持，滲漏，缺少內部，部件磨損或損壞。不過值得一提，通常的真正原因是選用不合式工作原理止回閥。在這種情況下，問題是該應用選型，而不是止回閥。兩個止回閥的最常見的問題是反流和水錘。在這兩種情況下，一個快速閉合閥是需要的。反向流動可能是昂貴的，尤其是如果它發生在一個泵的排出和泵旋轉後退。修理或更換泵的成本，再加上工廠停工，遠遠超過安裝正確的止回閥擺在首位的成本。與水錘，你需要一個更快的閉止回閥，防止發生壓力衝擊和由此產生的衝擊波當蝶板砸向座位，發送噪音，振動和錘擊聲，可以破裂的管道和損壞設備和管道支架。如果內部缺失或表現出磨損，有兩個因素可能發生。首先，如果選擇了單向閥不具有足夠的流量通過，以保持它對著它的停止，與較低KV/CV值的閥是需要防止的內部的移動/飄動。第二，如果單向閥是用在一個往復式空氣或氣體壓縮機的排出，需要用一個阻尼設計或緩衝器來處理高頻循環的閥。粘性可能出現污垢被困蝶板和閥體孔之間。洩漏可能發生的損壞金屬閥座或蝶板，具彈性體的軟密封材料是必要的，以防止零洩漏。Sometimeswegetsobusyorabsorbedinotherthings,weforgetthatthecausecanhelpwiththesolution.Commoncheckvalveproblemsincludenoise(waterhammer),vibration,reverseflow,sticking,leakage,missinginternals,componentwear,ordamage.However,itisworthmentioningthatnormallytherealcauseisthewrongstylecheckvalvefortheapplication.Insuchcases,theproblemistheapplication,notthecheckvalve.Twoofthemostcommonproblemswithcheckvalvesarereverseflowandwaterhammer.Inbothsituations,afast-closingvalveisdesired.Reverseflowcanbecostly,especiallyifitoccursatthedischargeofapumpandthepumpspinsbackwards.Thecosttorepairorreplacethepump,plustheplantdowntime,farexceedsthecostofinstallingtherightcheckvalveinthefirstplace.Withwaterhammer,youneedafaster-closingcheckvalvetopreventpressuresurgesandtheresultingshockwavesthatoccurwhenthediscslamsintotheseat,sendingnoise,vibration,andhammeringsoundsthatcanrupturepipelinesanddamageequipmentandpipesupports.Iftheinternalsaremissingorexhibitingwear,twofactorsmaybeoccurring.First,ifthecheckvalveselecteddoesnothaveenoughflowpassingthroughtokeepitagainstitsstop,avalvewithalowerCvisneededtopreventthemoving/flutteringoftheinternals.Second,ifthecheckvalveisusedatthedischargeofareciprocatingairorgascompressor,avalvewithadampeddesignordashpottohandlehigh-frequencycyclingisneeded.Stickingcanoccurwhenscaleordirtistrappedbetweenthediscandbodybore.Leakagecanhappenfromdamagetotheseatordiscorsimpletrashintheline.Anelastomerisneededtoprovidezeroleakage.