Specification :

4INCH SP oil cooled stainless steel submersible pump for deep well whose big difference between 4SD stainless steel submersible pump is its material and the pump body,they are
with same motor,both of them are oil cooled submersible motor,but for SD series,whose impeller is Plastic and for
SP series whose impeller is Stainless steel and for SP ,this is their big difference and of course the structure
of pump body are little different,like SD SERIES.it has suction support,strainer,shaft pin,shim,bushing ,guide bush,bearing bush ,intermediate support,diffuser cover ,sealing gasket,valve seat,outlet,velvet ,impeller
,diffuser and clamping spring.
but for SP series,they are suction
support,support,Rod,bearing bush,inlet
diffuser,shaft,plate,bushing,diffuser,o ring,o ring cover,direct cover,cable cover,check valve seat,check valve
cover,clamping ring,outlet ,stationary ring and outlet cover