NSEN yakonza ma valve a 2, kuphatikizapo 150LB ndi 600LB valves, ndipo onse adutsa mayeso a moto.

Chifukwa chake, certification ya API607 yomwe ikupezeka pano imatha kuphimba mzere wazinthu zonse, kuchokera kupsinjika 150LB mpaka 900LB ndi kukula 4″ mpaka 8″ ndi kukulirapo.

Pali mitundu iwiri ya satifiketi yachitetezo chamoto: API6FA ndi API607.Yoyamba imagwiritsidwa ntchito pa ma valve okhazikika a API 6A, ndipo yachiwiri imagwiritsidwa ntchito makamaka pazitsulo zogwiritsira ntchito madigiri 90 monga ma valve a butterfly ndi ma valve a mpira.

Malinga ndi muyezo wa API607, valavu yoyesedwa iyenera kuyaka palawi la 750 ℃ ​​~ 1000 ℃ kwa mphindi 30, ndiyeno muyese mayeso a 1.5MPA ndi 0.2MPA pamene valavu yakhazikika.

Mukamaliza mayeso omwe ali pamwambapa, mayeso ena ogwiritsira ntchito amafunika.

Vavu imatha kuyesedwa Pokhapokha ngati kutayikira komwe kuyeza kuli mkati mwa muyezo wa mayeso onse pamwambapa.