WHALE Aquasmart Socket White. Replacement socket for Whale Aquasmart systems. The Whale Aquasmart Socket differs to the Watermaster Sockets in that it does not have any electrical connections and also does not have a pressure switch. Can also be used as an external water socket for new installations in caravans or motorhomes where an onboard water pump is going to be used. Works in conjuction with a Whale Aquasmart filter/plug assembly. (Part No.UH0814).