Hansen Hermetic Liquid Refrigerant Pumps offer a simple, proven design which is quiet and compact. These pumps have no shaft seals to leak to atmosphere. The rotor of the direct drive motor is inside of a stainless steel "can" while the external electrical stator is surrounded by an additional pressure-tight housing to further ensure against any possible loss of fluid.
These carefully designed and manufactured Constant Flow Regulators accurately control the flow rate from refrigerant liquid pumps. They modulate to maintain a pre-calibrated ideal constant flow of refrigerant independent of pressure changes.
The Pump Guardian is a fully integrated controller designed specifically for use with industrial refrigeration pumps. Intended to safeguard refrigerant liquid pumps and to alert plant operators to improper or harmful operating conditions as they occur.