Hi Philip
For the slightly earlier vans, the fuel pump relay T10 is a plug-in type mounted in the B001 Fuse/Relay/Junction box which is under a plastic cover in the engine bay on the right hand side as you look at it (UK passenger side). It is very likely that your vehicle is the same. See drawing attached.
The relay you have pictured is one of a family of universal high current relays used for central locking and possibly radiator fan control, and mounted at various places. I have no idea why many used part sellers wrongly list it as a fuel pump relay, maybe they all copy each other.
Gm6vxb recently deciphered and listed the central locking functions
134-596-40-80 (marked L1) is for two doors only
134-596-30-80 (marked L2) is for two doors plus deadlock
134-596-20-80 (marked L3) is for two front doors plus side door.
134-068-00-80 (marked L4) can work four doors