The Carden type Universal Joint used in this pump acknowledged as far superior to the conventional single pin & bush joint, having only line contact, which is subjected to extreme concentrated load, resulting in higher wear rate. the Carden type of UJ Joint employs two sets of pins perpendicular to each other, each providing freedom of angular movement which facilitates smoother transmission of angular load and is designed to withstand the axial forces dominant in Progressive Cavity Pumps.