Super-Sub 12 volt Well Sampling Pumps
Geotechnical Services model 921 Super-Sub Pumps run off of a 12-volt car battery.
The 921 Super-Sub Self-venting Submersible Pump is a completely sealed unit, designed to be run submersed in fresh water, saltwater and diesel.
Super sub Pumps, a.k.a. Whaler Pumps - Super Sub #921 (price sheet pdf)

This Self-venting Submersible Electric
pump is a completely sealed unit, designed to be run submersed in
water. Fully immersed in water the pump is primed and gives instant
delivery of water. It can be run for long periods in water but it
is recommended that running periods should be restricted to a maximum
of 15 minutes. #921 Super-Sub pumps are guaranteed for 1 year against
defects in materials and workmanship.
Warranty: #921 Super-Sub pumps are guaranteed for 1 year against defects in materials and workmanship provided the pump case is not opened or the pump otherwise abused.
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