casing

choose the housing material and the surface treatment and depending on the pump size possible connection variants.
default material aluminum
 G  Gray cast iron housing, drive flange and aluminum suction flange
 A  Housing made of chrome-nickel steel, drive flange and suction flange aluminum
 KA  Housing made of hardened chrome-nickel steel, drive flange and suction flange aluminum
 GD CS  Gray cast iron housing, drive flange and aluminum suction flange, design for coolant

 OX  Aluminum parts hard anodised
pressure connection:  SAE   thread