GREEN PUMPS formerly Caster pumps produces magnetically coupled pumps in stainless steel and plastic. The magnetically coupled pump is shaft sealless and therefore emission-free. The pumps meet the requirements of the 1990 EPA Clean air directive. The magnetically coupled pump solution is a cost-effective way to get around complicated shaft sealing solutions, typically in connection with hazardous liquids.

Green Pump GPC is a machined centrifugal pump in PP (Polypropylene) or PVDF (Teflon). Green pumps GPC is a chemistry standard centrifugal pump. The pump principle is based on a stationary shaft around which a closed impeller rotates. As in all magnetic drive pumps, the pumped liquid circulates around the inner magnet. Magnetically coupled pumps cannot tolerate dry running or operation against a closed valve (Q min. issue) or pumping without a defined back pressure (Q max. issue). We have relay solutions based on Cos. Phi and overcurrent relay solutions that can monitor magnetically coupled pumps and disconnect them and/or alarm in case of Q min/Q max errors.

Green Pump GPC was referred to as Caster MC and Caster MCA during the Caster era.

Application: Hazardous liquids such as acids, bases, distillate, sterile water, alcohols, gasoline, fire and explosive liquids. Green Pumps GPC is available in capacities from approx. 1.5 m3/h to 100 m3/h. For particularly cold liquids down to -50 C (only on request!) we recommend that the NH3 magnetic coupling is rented. T(max) up to 60 C (PP) /120 C (PVDF) (only on request).