Like almost all pump firms (we do pumps not webdesign!) it's hard to search and find spares on their website. But do not despair as a Google search will take you straight to the item on the W Robinson site (among other rivals).
Unlike others sites, reasonable delivery cost which is what sold it to me and parcel arrived next day as promised.”
“The pump was delivered promptly, and has proved to be a good unit. I think that you could give more information on the pump description, of for example fittings that are part of the purchase, namely pipe fittings and suction filter. That I am sure would help customers more.”