These pumps, using no electrical components are useful if you have to sample in an intrinsically safe way. Stainless steel foot valves are re-usable as they can be cleaned in a dishwasher making them more cost effective than plastic valves which cannot be effectively cleaned, so could cause sample contamination if re-used.

• Economical
• Manual operation
• Suitable for environmental analysis in groundwater wells with diameters from 9mm to 22mm
• A simple and inexpensive groundwater research pump for well development and purging
• Low risk of cross contamination as sample is not in contact with air
• Stainless steel valve can be easily decontaminated
• Light weight
• Easy to install
• Can be used in wells with shaft type covers as well as from street type well covers