Small Liquid Diaphragm Pump. Dec. 9, 2004. The NF5 pumps liquids and liquid/gas mixtures at 50 ml/min. The pump can pull water up 13 ft (12-in. Hg) and discharge at 15 psig. Staff.

It's estimated that 60% of the total ownership costs of a diaphragm pump are due to downtime, and two of the leading causes are freezing and stalling.