Oberdorfer has a well-earned reputation for manufacturing extremely high quality bronze pumps. The N202M pumps come with 2-hole mounting flanges and 5-hole mounting flanges. 2-hole models have a slotted drive shaft and an oil cup; 5-hole models have a drive shaft with a male tang.Direction of shaft rotation determines inlet and outlet ports.
2-bolt or 5-bolt flange mounting with Up direction inlet & outlet ports
Port size for all pumps listed: 3/8" female NPT inlet and outlet
Old-style #6597 cover plate has a raised casting on the outside, and is smooth on the inside - seals with a paper gasket
New-style (approx. post 2003) #6597B cover plate is smooth on both sides - seals with an O-ring in the pump body
#10725 Repair Kit includes Impeller, lip seals, retaining ring, and both an O-ring and a paper gasket for either style cover plate
#11691 Repair Kit includes the above, as well as a carbon bearing