Standard pump holders for gear pumps group 1,2,3, type L For gear pumps with rectangular flange and tapered shaft (European standard) For engines with a B5 flange Assortment : 0.22 to 22kW Cast aluminium Type 4E is equipped with a centring washer. The pump and motor combination is often mounted horizontally on top of the tank for convenient maintenance. Disassembling the pump is generally possible without removing the motor, the coupling half that is mounted on the pump fits through the hole of the bell housing. 4S type is designed without centring washer. The pump and motor combination is often mounted to the tank vertically, meaning that the pump is immersed in the reservoir In combination with elastic couplings type GE Temperature range : -30 °C to +80 °C