Isihlalo sentsimbi engatyiswangaIivalvu zeplagi eziphakamisayoZaphuhliswa kwiminyaka engaphezu kwama-80 eyadlulayo ukusombulula iingxaki zeevalvu ezikhoyo kwinkonzo yokuqhekeka kweekhataythali. Njengoko iivalvu zazisebenza kakuhle kule nkonzo, kwacetyiswa ukuba zisetyenziswe nakwezinye izicelo zehash kushishino lweekhemikhali kunye nepetrochemical. Njengoko iivalvu zazisebenza kakuhle kule nkonzo, kwacetyiswa ukuba zisetyenziswe nakwezinye izicelo zehash kushishino lweekhemikhali kunye nepetrochemical. Ukuchaza isizathu sokuba ivalvu ibe yimpumelelo kangaka, ngezantsi sichaze iimpawu zoyilo lwevalvu ukubonelela ngamandla ayo angaphakathi.

UMGAQO WOKUVULA NOKUVALA KWE-IVALVU YEPLUG YOKUPHAKELA

Ukuvulwa kwevalvu:

• 1) jika ivili lesandla ukuze iplagi iphakanyiswe ize yahlulwe nomphezulu wokutywina;
• 2) Emva koko jika i-handle lever nge-90 degrees ukuze uqhagamshele i-channel ye-plug kwi-channel yomzimba we-valve, ukuze i-plug valve ivuleke.

Ukuvalwa kwevalvu:

• 1) jika i-handle lever nge-90 degrees ukuze wenze i-plug channel ijikeleze i-valve body channel
• 2) uze ujike ivili lesandla ukuze wehle iplagi, ukuze ivalvu ivalwe.

Ngexesha lokuvulwa nokuvalwa kwevalvu, iplagi iyaphakanyiswa ize yahlulwe kwisihlalo sevalvu, ngoko ke i-torque yokusebenza incinci kakhulu, kulula kakhulu ukuyivula nokuyivala ivalvu. Kwaye umphezulu wokutywina awukhubeki ngexesha lenkqubo yokuvulwa okanye yokuvalwa. Ngoko ke ivalvu inobomi obude. Ivalvu yeplagi yokuphakamisa isibambo sesandla inesakhiwo esincinci, ivolumu encinci kunye nokumelana nolwelo oluphantsi.