The new CU15 air-operated miniature diaphragm pump.
The new CU15 air-operated miniature diaphragm pump.

The Model MID and CU15 diaphragm pumps are reported to feature exceptional performance, power and strength to facilitate transfer of liquids with very high viscosity (up to 5000 cps). They are available with polypropylene or ECTFE pump bodies to ensure optimum chemical compatibility.

The pumps also feature a stall-prevention pneumatic system design which does not require lubricated air and therefore allows 'dry' operation without incurring damage. Self-priming dry capacity is 3 m, even with considerable suction head, and pump speed can be fine-tuned without pressure loss.

The standard version of both pumps is ATEX classified II 3/3 GD c IIB T135°C (for zone 2), and the optional Conduct versions are ATEX classified II 2/2 GD c IIB T135°C (for zone 1).

The Clark Solutions MID model pumps provide flow rates to 5 LPM (1.32 GPM) at pressures to 70 m (99.7 PSI), and have a maximum operating temperature of 60°C (140°F).

The CU15 model pumps provide flow rates to 17 LPM (4.49 GPM) at pressures to 70 m (99.7 PSI). Maximum operating temperature for polypropylene models is 60°C (140°F); for ECTFE models it is 95°C (203°F).