Get current pricing for Neslab, Coolflow System 1 Neslab Coolflow System 1 Liquid/liquid Recirculator. 115v, 1ph, 60hz, 8 Amp. Temp. Range: +5 To +35 Deg C. Pd-2 Pump: 3.5 Gpm At 50 Psi. One Gallon Re . Product Category: Lab Equipment, Sub Category: Baths/circulators: