Ukuhlolwa ngaphambi kokufakwa kwevalvu

① Jonga ngononophelo ukuba imodeli yevalvu kunye neenkcukacha ziyahlangabezana na neemfuno zomzobo.

② Jonga ukuba isiqu sevalvu kunye nediski yevalvu ziyaguquguquka na xa zivuleka, kwaye nokuba zibambekile okanye zigobile.

③ Jonga ukuba ivalvu yonakele na kwaye ukuba imisonto yevalvu eneentambo ithe tye kwaye ayitshintshanga.

④ Jonga ukuba unxibelelwano phakathi kwesihlalo sevalvu kunye nomzimba wevalvu luqinile na, unxibelelwano phakathi kwediski yevalvu kunye nesihlalo sevalvu, isigqubuthelo sevalvu kunye nomzimba wevalvu, kunye nesiqu sevalvu kunye nediski yevalvu.

⑤ Jonga ukuba i-gasket yevalvu, ukupakisha kunye neziqhoboshi (iibholithi) zifanelekile na kwiimfuno zohlobo lwesixhobo sokusebenza.

⑥ Iivalvu zokunciphisa uxinzelelo ezindala okanye ezishiywe ixesha elide kufuneka zichithwe, kwaye uthuli, isanti kunye nezinye izinto ezimdaka mazicocwe ngamanzi.

⑦ Susa isigqubuthelo sokutywina i-port uze ujonge inqanaba lokutywina. Idiski yevalvu mayivalwe kakuhle.

Uvavanyo loxinzelelo lwevalvu

Iivalvu ezinoxinzelelo oluphantsi, oluphakathi kunye noxinzelelo oluphezulu kufuneka zivivinywe amandla kunye novavanyo lokuqina. Iivalvu zentsimbi ye-alloy kufuneka zenze uhlalutyo lwe-spectral kwiigobolondo nganye nganye kwaye zihlolisise izixhobo.

1. Uvavanyo lwamandla evalvu

Uvavanyo lwamandla evalvu kukuvavanya ivalvu ikwimeko evulekileyo ukujonga ukuvuza kumphezulu wangaphandle wevalvu. Kwiivalvu ezine-PN ≤ 32MPa, uxinzelelo lovavanyo luphindwe kayi-1.5 kunoxinzelelo oluqhelekileyo, ixesha lovavanyo alikho ngaphantsi kwemizuzu emi-5, kwaye akukho kuvuza kwigobolondo nakwi-packing gland ukuze kuqinisekiswe.

2. Uvavanyo lokuqina kwevalvu

Uvavanyo lwenziwa ngevalvu ivaliwe ngokupheleleyo ukujonga ukuba kukho ukuvuza kumphezulu wokutywina ivalvu. Uxinzelelo lovavanyo, ngaphandle kweevalvu zebhabhathane, iivalvu zokujonga, iivalvu ezisezantsi kunye neevalvu ze-throttle, ngokubanzi kufuneka lwenziwe ngoxinzelelo oluqhelekileyo. Xa lunokumiselwa Xa uxinzelelo lusebenza, uvavanyo lunokwenziwa ngokuphindwe kayi-1.25 kuxinzelelo olusebenzayo, kwaye umphezulu wokutywina wediski yevalvu uya kufaneleka ukuba awuvuzi.

Imithetho ngokubanzi yokufakelwa kwevalvu

1. Indawo yokufaka ivalvu akufuneki ithintele ukusebenza, ukuqhaqhwa kunye nokugcinwa kwezixhobo, imibhobho kunye nomzimba wevalvu ngokwawo, kwaye imbonakalo yobuhle bendibano kufuneka ithathelwe ingqalelo.

2. Kwiivalvu ezikwimibhobho ethe tye, isiqu sevalvu kufuneka sifakelwe phezulu okanye sifakelwe kwi-engile. Musa ukufaka ivalvu ngevili lesandla elisezantsi. Iivalvu, iziqu zevalvu kunye namavili esandla kwimibhobho ephakamileyo zinokufakelwa ngokuthe tye, kwaye ikhonkco elithe nkqo kwinqanaba elisezantsi lingasetyenziselwa ukulawula kude ukuvulwa nokuvalwa kwevalvu.

3. Ulungiselelo lulungelelene, lucocekile kwaye luhle; kwiivalvu ezikwi-standpipe, ukuba inkqubo iyavuma, ivili lesandla levalvu lilungele kakhulu ukusebenza kubude besifuba, ngokubanzi i-1.0-1.2m ukusuka emhlabeni, kwaye isiqu sevalvu kufuneka silandele ukufakelwa koMsebenzi.

4. Kwiivalvu ezikwimibhobho ethe nkqo ecaleni, kungcono ukuba nokuphakama okufanayo komgca ophakathi, kwaye umgama ocacileyo phakathi kwamavili esandla akufuneki ube ngaphantsi kwe-100mm; kwiivalvu ezikwimibhobho ethe tye ecaleni, kufuneka zijikeleziswe ukuze kuncitshiswe umgama phakathi kwemibhobho.

5. Xa kufakwa iivalvu ezinzima kwiimpompo zamanzi, ii-heat exchangers kunye nezinye izixhobo, kufuneka kufakwe iibrakethi zeevalvu; xa iivalvu zisetyenziswa rhoqo kwaye zifakelwe ngaphezulu kwe-1.8m ukusuka kumphezulu wokusebenza, kufuneka kufakwe iqonga lokusebenza elizinzileyo.

6. Ukuba kukho uphawu lomtolo emzimbeni wevalvu, icala lomtolo licala lokuhamba kwesixhobo sombane. Xa ufaka ivalvu, qiniseka ukuba umtolo ukhomba kwicala elifanayo nokuhamba kwesixhobo sombane kumbhobho.

7. Xa ufaka iivalvu zeflange, qiniseka ukuba ubuso bokugqibela beeflange ezimbini buhambelana kwaye buqinile, kwaye iigaskets eziphindwe kabini azivumelekanga.

8. Xa ufaka ivalvu enemisonto, ukuze kube lula ukuyiqhaqha, ivalvu enemisonto kufuneka ixhotyiswe nge-union. Indawo ye-union kufuneka iqwalasele ukulula kokugcinwa kwayo. Ngokwesiqhelo, amanzi ahamba ngevalvu kuqala aze emva koko adlule kwi-union.

Amanyathelo okufaka iivalvu

1. Izinto zomzimba wevalvu ikakhulu zenziwe ngentsimbi ephosiweyo, ebuthathaka kwaye akufuneki ibethelwe zizinto ezinzima.

2. Xa uthutha ivalvu, ungayiphosi ngokungacwangciswanga; xa uphakamisa okanye uphakamisa ivalvu, intambo kufuneka ibotshelelwe emzimbeni wevalvu, kwaye akuvumelekanga ngokungqongqo ukuyibophelela kwivili lesandla, kwisiqu sevalvu nakwimbobo yebholithi yeflange.

3. Ivalvu kufuneka ifakwe kwindawo efanelekileyo yokusebenza, ukugcinwa kunye nokuhlolwa, kwaye akuvumelekanga ngokungqongqo ukuyigquma phantsi komhlaba. Iivalvu ezikwimibhobho egqunywe ngqo okanye emiseleni kufuneka zixhotyiswe ngemithombo yokuhlola ukuze kube lula ukuvulwa, ukuvalwa kunye nokulungiswa kweevalvu.

4. Qinisekisa ukuba imisonto ayigutyungelwanga kwaye isongelwe nge-hemp, ioyile yelothe okanye iteyiphu ye-PTFE