Qhov zoo thiab qhov tsis zoo ntawm npauj npaim valve

1. Qhov zoo ntawm npauj npaim valve
1. Nws yog qhov yooj yim thiab ceev qhib thiab kaw, txuag zog, tsis muaj dej tsis kam, thiab tuaj yeem ua haujlwm ntau zaus.

2. Cov qauv yooj yim, me me thiab lub teeb yuag.

3. Cov av nkos tuaj yeem thauj tau, nrog qhov tsawg kawg nkaus ntawm cov kua ntawm cov yeeb nkab qhov ncauj.

4. Nyob rau hauv tsis tshua muaj siab, sealing zoo tuaj yeem ua tiav.

5. Kev hloov kho tau zoo.

2. Qhov tsis zoo ntawm npauj npaim valve
1. Kev ua haujlwm siab thiab kev ua haujlwm kub yog me me.

2. Tsis zoo airtightness.