Migwirizano ndi matanthauzo molingana ndi EN ISO 4126-1
1) Valavu chitetezo
Vavu yomwe yokha, popanda kuthandizidwa ndi mphamvu ina iliyonse kupatula yamadzimadzi yomwe ikukhudzidwa, imatulutsa kuchuluka kwamadzimadzi kuti asapitirire kupanikizika kotetezeka kodziwikiratu, komwe kumapangidwira kutsekanso ndikuletsa kutuluka kwamadzimadzi pambuyo pake. Kupanikizika koyenera kwantchito kwabwezeretsedwa.
2) Khazikitsani kukakamizidwa
Kupanikizika kodziwikiratu komwe valavu yotetezera pansi pazikhalidwe zogwirira ntchito imayamba kutsegulidwa.
Kutsimikiza kwa kukakamiza kokhazikitsidwa: chiyambi cha kutsegula kwa valve yotetezera (nthawi yomwe madzi akuyamba kuthawa
kuchokera ku valavu yotetezera, chifukwa cha kusuntha kwa diski kuchoka pa kukhudzana ndi kusindikiza pamwamba pa mpando) kungadziwike m'njira zosiyanasiyana (kusefukira, pop, thovu), zomwe zimatengedwa ndi BESA ndi awa:
- kukhazikitsa ndi gasi (mpweya, nayitrogeni, helium): chiyambi cha kutsegula kwa valve yotetezera kumatsimikiziridwa
- pomvera kugunda koyamba komveka
- mwa kusefukira kwa madzi oyesera otuluka pampando wa valve;
- kukhazikitsa ndi madzi (madzi): chiyambi cha kutsegula kwa valavu yotetezera kumatsimikiziridwa ndi kuyang'ana koyambirira kwamadzimadzi omwe amatuluka pampando wa valve.
Kupanikizika shall kuyeza pogwiritsa ntchito choyezera cholondola cha kalasi ya 0.6 ndi sikelo yonse ya 1.25 mpaka 2 nthawi yomwe imayenera kuyezedwa.
3) Kuthamanga kwakukulu kovomerezeka, PS
Kupanikizika kwakukulu komwe zida zimapangidwira monga momwe zimapangidwira ndi wopanga.
4) Kupanikizika kwambiri
Kupanikizika kumawonjezeka pa kukakamizidwa kokhazikitsidwa, komwe valavu yotetezera imafika pamtunda wotchulidwa ndi wopanga, nthawi zambiri amawonetsedwa ngati peresenti ya kukakamiza kokhazikitsidwa.
5) Reseating pressure
Kufunika kwa mphamvu ya inlet static yomwe diski imayambiranso kukhudzana ndi mpando kapena pomwe kukweza kumakhala ziro.
6) Kuthamanga kozizira kosiyana kosiyana
Inlet static pressure pomwe valavu yotetezera imayikidwa kuti iyambe kutsegulidwa pa benchi.
7) Kuchepetsa kupanikizika
Kupanikizika komwe kumagwiritsidwa ntchito poyesa valavu yachitetezo yomwe ndi yayikulu kuposa kapena yofanana ndi kukakamiza kokhazikitsidwa kuphatikiza kupanikizika kwambiri.
8) Kumangidwanso kumbuyo
Kupsyinjika komwe kulipo pamtunda wa valve yotetezera chifukwa cha kutuluka kwa valve ndi dongosolo lotulutsa.
9) Superimposed back pressure
Kupanikizika komwe kulipo pakutuluka kwa valve yotetezera panthawi yomwe chipangizocho chiyenera kugwira ntchito.
10) Kwezani
Ulendo weniweni wa valavu ya disc kutali ndi malo otsekedwa.
11) Malo oyenda
Malo ocheperako oyenda pang'onopang'ono (koma osati malo otchinga) pakati pa malo olowera ndi mpando omwe amagwiritsidwa ntchito kuwerengera kuchuluka kwa mayendedwe ongoyerekeza, popanda kuchotsera pa chopinga chilichonse.
12) Mphamvu yotsimikizika (kutulutsa).
Kuposa gawo la mphamvu yoyezera yomwe imaloledwa kugwiritsidwa ntchito ngati maziko opangira ma valve otetezera.
