Please check that you have not confused this pump with the similarly named but very different Hydratech Multi 4000.
This pump has been discontinued, if you require a replacement pump we can supply the nearest current model Midipond 3500 click here for details.
Sorry there are no spare parts available for this pump.
Azpack Limited, 24 Kernan Drive, Swingbridge Trading Estate, Loughborough, Leics, LE11 5JF, England. (01509) 261256