Papita zaka zoposa 50 kuchokera pamene valavu ya gulugufe yopangidwa ndi katatu inayamba kugwiritsidwa ntchito, ndipo yakhala ikupangidwa mosalekeza m'zaka 50 zapitazi. Kugwiritsa ntchito mavalavu a gulugufe kwakhala kukuchitika m'mafakitale ambiri. Vavu yoyambirira ya gulugufe imagwiritsidwa ntchito pongolumikiza ndi kulumikiza zinthu zamadzi. Kapangidwe kake ka katatu kopangidwa ndi katatu kamawonjezera ntchito ya valavu ya gulugufe. Yakhala imodzi mwa mavalavu omwe amagwira ntchito bwino kwambiri pansi pa mikhalidwe yovuta kwambiri m'malo ovuta kwambiri mu zida zamapaipi a mafakitale.

Monga momwe dzinalo likusonyezera, ma offsets atatu odziyimira pawokha adapangidwa ngati ma valve. Kusasinthasintha katatu kumatanthauza:

• Kuchotsera 1

Mzerewo umayikidwa kumbuyo kwa malo otsekera kuti pakhale njira yopitilira yokhala ndi mpando.

• Kuchotsera 2

Shaft imayikidwa mbali imodzi ya pakati pa chitoliro/valavu kuti pasakhale kukangana pakati pa chisindikizo ndi mpando.

• Kuchotsera 3

Mizere yapakati ya mpando ndi chosindikizira imakhala yolunjika poyerekeza ndi mzere wapakati wa chitoliro/valavu. Chosinthira chachitatu ichi chimachotsa kukanda. Ngodya iyi ya chosindikizira, pamodzi ndi zotchingira ziwiri za eccentric shaft, imalola diski kutseka mpando popanda kukangana.

Kapangidwe ka mipando kameneka kamalolanso kutseka kofanana, motero kutseka kolimba pakapangidwe ka mipando yachitsulo. Kapangidwe kameneka ndi kotsika mtengo komanso kotsika mphamvu (kosavuta kuigwiritsa ntchito), poyerekeza ndi mavavu ena okhala ndi zitsulo.

Ma offsets atatu nthawi zambiri amagwiritsidwa ntchito pazinthu monga nthunzi yothamanga kwambiri (yoposa 150 PSI), nthunzi yotentha kwambiri, mpweya wotentha kwambiri ndi mafuta, kugwiritsa ntchito kutentha kwambiri ndikwabwino pa valavu yamtunduwu chifukwa mpando wachitsulo umafunika pamwamba pa mpando wofewa.