Spare parts for Big Discovery – earlier version

Find the correct part using its position in the original exploded view, catalogue code and pump version. Check the rating and generation before ordering: similar-looking parts may differ.

This page covers the earlier Big Discovery version. Compare the layout and part code with your pump; the 2023 version has a separate guide.

Original exploded view: Big Discovery – earlier version

Click the drawing to view it at full size. The numbers correspond to positions in the parts list.

Find a spare part

Impellers, diffusers and seal plates

Position	Spare part	Selection
12	X Impeller nutPart code: IHD031075	Match the code and pump version
13	Impeller and nut NEWBCC400T-MPart code: ISP050078	Match the code and pump version; replaces IHD051150

Seals and mechanical seals

Position	Spare part	Selection
2	Strainer lid and seal BIG DISCOVERYPart code: ISP050061	Match the code and pump version; replaces IHD006035
6	Drain plug and seal NEWBCCPart code: ISP040008	Match the code and pump version; replaces IHD036000
14	Mechanical seal NBCC + BCCPart code: IHD056010	Match the code and pump version
15	Housing seal NEWBCC + BDPart code: IHD021095	Match the code and pump version
16	Seal plate and seal NEWBCCPart code: ISP050084	Match the code and pump version; replaces IHD061040
30	Pump union sealBIG DISCOVERYPart code: IHD021165	Match the code and pump version
33	Pump union sealNEWBCCPart code: IHD021125	Match the code and pump version

Unions and other parts

Position	Spare part	Selection
24	Water shield NEWBCC,CALAPart code: IMT001015	Match the code and pump version
24	Slinger ring,CALA+ NEWBCC+BIGDISPart code: IMT001030	Match the code and pump version
28	Pump union nutBIG DISCOVERPart code: IHD076055	Match the code and pump version
29	Pump union tailpieceBIG DISCOVERYPart code: IHD076050	Match the code and pump version
31, 32	Pump unionNEWBCC completePart code: ISP050071	Match the code and pump version; replaces IHD076030, IHD076025

The drawing also shows components not offered separately here. The contents of each item are specified on its product page. If unsure, send us a photo of the original part and pump nameplate.