Found something intriguing in the shop today. It is an inline filter which sounds like a good idea when you are using products like the Cuplex XT and XT DI with very small nozzles.
It has ball valves, a stainless steel mesh filter, mount, and can even be lit up like the Aquatubes.
More information can be found here. Appears to be 29.9 Euro and if you live outside the EU it is 24.22 Euro. It's made out of black delrin, plexiglas, and has G 1/8 threads.