The 310E 1.0 horse power water pump, made by DXD can be used to create those wonderfully relaxing jets of water in a whirlpool bath, spa or hot tub.This is a DXD 310 E pump which is used on hot tubs, pools and whirlpool baths. This is a suitable replacement for DXD model 310E pumps.The pump comes with two white union connectors (measurements below), which can be seen in product images.DXD 310 E Technical InformationDiameter of the Female Pump Union Connector That Connects to the Water Pump: 55.5mm / 2.185" inches (2 and 3/16" inches)Diameter of the Two Threaded Connectors on the Pump: 62.5mm / 2.46" inches (2 and 29/64" inches)Horse Power (HP): 0.75Power: 0.75 kW (or 180 watts)Volts: 230V / 50 HzProtection Grade: IP 55Maximum Lift (i.e. the maximum height the pump can pump water to): 10.0mImpeller Rotation Speed (RPM): 2850Maximum Water Flow (Litres Per Minute): 300Insulation Class: BGross Weight: 8.0 kgPump Union Connector: 2 1/2" inch to 2" inch connector (click here to see further information on this pump union)Can be used in a swimming pool as well as a spa, and it quite common in Chinese spa manufacturers.We deliver the DXD 300 E pump worldwide.