... chemicals, water treatment printing, cleaning, packaging, food processing, and other areas of liquid deliveryNormal Parameters:1. Altitude: ≤ 2500 M 2. ... 6. Working way: continuous working 7. Apply the media of: acid and alkali, salt, organic solvents, oils.8. Lifetime above ... "12" means the gear of the pump with the height of 12mm, "17" means 17mm.OEM and ODM service are avaiable under ...