HydroQuip 10-0138-K Grundfos Circulation Pump 230V 60Hz 0.75" Barbed - Hydro Quip has been providing the hot tub, spa and jetted bath industries with premium equipment systems since 1981. They have established an unmatched global reputation for superior quality, reliability and customer service. They design, manufacture, and private label custom equipment for OEMs. Their Distributor product line includes electronic and pneumatic controls, heaters and blowers.