... Maximum Passage for suspended solids diameter 2 mm. PH value in water is 4-10.0. Structural Characteristic: Stainless Steel ... Stainless Steel, Half Open Type With Thermal Overload Protector In Single Phase Motor. Application:QDX series small stainless steel ... ,small volume,convenient usage,which have been widely applied in well pumping,rivering pumping,irrigation and drainagein breeding industry, ...