A study published this week in the journal Psychological Science finds that priming our mind with thoughts of either time or money can have a very real impact our behavior.

According to Barnant, the pumps are self-priming, can operate dry without damage, are suitable for slurries and viscous liquids, and contain no valves or seals.

In general, a foot valve can be mounted if the pump is mounted above the water level of the water inlet so as to start the pump with priming, it can also use the way of vacuum pump water leading.