Mzere wamkati wa tanki yosungiramo mpweya wa okosijeni umapangidwa ndi 16MnDR ndipo mzere wakunja wa thanki yosungiramo mpweya wa okosijeni umapangidwa ndi Q245R kapena Q345R. Malo osungiramo okosijeni amadzimadzi amasankha "kuphatikiza, chitetezo cha valve" pogwiritsa ntchito magulu awiri a ma valve otetezera kuti agwire ntchito limodzi, mu nthawi yoyendetsa valavu yotetezera ikhoza kutsekedwa kumbali imodzi, kuonetsetsa kuti chitetezo cha okosijeni chikugwirabe ntchito.
