12V ProActive® plastic pumps with a diameter of 36 mm, for the sampling of water in small diameter piezometers or larger but irregular diameters
If you need a diameter smaller than 1.5″, inertia valves can be used.

Smart Geo srl is the sole distributor in Italy of ProActive® products

Disclaimer: ProActive® products are to be used in water only.
They must not be modified in any way. They must not be used with or near combustibles, flammable liquids, vapors and, but not limited to, ethylene oxide, methyl chloride, pentane, petrol, diesel, benzene, acetone, ethyl alcohol, isopropyl alcohol, etc.
Any unauthorized use or modification can damage the product or cause damage to people or things and is at the risk and responsibility of the purchaser and the end user, and invalidates any type of guarantee.

Proactive Environmental Products International®