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 GPTA is a machined stainless steel centrifugal pump. GPTA is a turbine pump also known as a side channel impeller pump. The pump principle belongs to the centrifugal pump category, but unlike traditional centrifugal pumps, it can work with a high gas content, typically up to 20%. The pump characteristics provide a relatively high pressure at a relatively low flow (see brochure). These characteristics make the pump an attractive choice for pumping small gaseous flow rates from 100 l/h-3,000 l/h with pressures up to 5-7 bar.

Like all magnetic drive pumps, the pumped liquid circulates around the inner magnet. Magnetically coupled pumps cannot tolerate dry running or operation against a shut-off valve or pumping without a defined back pressure. We have relay solutions based on Cos. Phi and overcurrent that can monitor magnetically coupled pumps and disconnect and/or alarm in case of faulty operation.

Green Pump GPTA was referred to as Caster MT or Caster MTA during the Caster era.

Application: Hazardous liquids such as bases, alcohols, gasoline, general chemistry, fire and explosive liquids.