Circulating Pump for High Pressure and −200 to +400°C Application

The design of a simple mechanical magnetic circulating pump is given. The pump has been used in this laboratory for a wide range of applications. A pump of this design may be immersed in a bath within the temperature range of −200 to over +400°C and will operate at pressures up to 3500 kg/cm2, dependent upon the material of construction. A most significant design feature of the pump is the achievement of both chemical and mechanical cleanliness. No lubrication is required. The pump is self-flushing with no trapping or pocketing of the circulated fluid possible. The pump is durable and reliable for long periods of operation. The drive for the pump is mounted external to the constant temperature bath, which prevents thermal transfer from the drive to the bath or the pump. The design incorporates a permanent magnet.