Burks Pump - #37CT7MKeep your business flowing with reliable, top quality Burks Pumps. With so many other challenges facing you, the last thing you want to worry about is the performance of your pump, which is exactly why you should buy a Burks Pump. In addition to outstanding craftsmanship and dependable operation. Burks Pumps have Life-Lok – the only regenerative pump with this feature – that allows external adjustment of the impeller and extends the life of the pump. Model #37CT7M 3/4 HP, Voltage 220/440 Three Phase/60Hertz, 1” Inlet 1”Outlet.