https://www.sylpump.com/product/borewell-pump/dc-deep-well-pump.html。

1. The volume ratio of solid impurities in the mecdium shall not exceed 0.1%, and the particle size shall not exceed 0.2mm

2. Mecdium temperature not more than +20c

3. PH value of medum is between 6.5-8.5

4. The deepest depth of submergence shall not exceed 20 m,and the shalowest depth shall not be less than5m