Ukucaciswa
a) Yenziwe nge-PC ye-resin yengilazi esobala. Ukusebenzisa i-industrial 3M glue.
Ukuphathwa okubonakalayo ukuphepha okwengeziwe, impahla eluhlaza esobala, kalula nangokucacile ukubona isimo sokushintshwa.
b) Uma usukhiyiwe, vimbela ivalvu ukuthi ingaphendulwa.
c) Isisekelo sivumela ukusetshenziswa ngama-semicircles amabili ukuze kufakwe i-valve.
d) Ifaka i-valve. Kufika ku-55 mm ububanzi no-43mm ubude.
e) Ilingana 32 mm-46 mm ivalvu yobubanzi.