Chitsulo chosapakidwa mafutavalavu yokweza pulagiAdapangidwa zaka zoposa 80 zapitazo kuti athetse mavuto omwe analipo ndi ma valve omwe alipo kale mu ntchito yokonza ma catalyst. Popeza ma valve anali bwino kwambiri mu ntchito iyi, adalimbikitsidwanso kuti agwiritsidwe ntchito mu ntchito zina za hash mumakampani opanga mankhwala ndi petrochemical. Popeza ma valve anali bwino kwambiri mu ntchito iyi, adalimbikitsidwanso kuti agwiritsidwe ntchito mu ntchito zina za hash mumakampani opanga mankhwala ndi petrochemical. Kuti tifotokoze chifukwa chake valavu yakhala yopambana kwambiri, pansipa tafotokoza kapangidwe ka valavu kuti ipereke mphamvu zambiri mkati mwake.

MFUNDO YOTSEGULA NDI KUTSEKA KWAvalavu yokweza pulagi

Kutseka kwa valavu:

• 1) tembenuzani chogwirira ndi madigiri 90 kuti njira ya pulagi ikhale yolunjika ku njira ya thupi la valavu
• 2) Kenako tembenuzani gudumu lamanja kuti mutsike pulagi, kuti valavu itseke.

Pakutsegula ndi kutseka valavu, pulagi imakwezedwa ndikulekanitsidwa ndi mpando wa valavu, kotero mphamvu yogwirira ntchito ndi yaying'ono kwambiri, yosavuta kutsegula ndi kutseka valavu. Ndipo pamwamba pake potseka sipakhala kukanda panthawi yotsegula kapena kutseka. Chifukwa chake valavu imakhala ndi moyo wautali. Vavu yonyamulira chogwirira chamanja imakhala ndi kapangidwe kakang'ono, kamene kali ndi voliyumu yaying'ono komanso kukana madzi pang'ono.