Poseidon 2. stage Doseringhous for Poseidon Jetstream.

Market as Nr: 23 on Drawing.
Included is the following part:

P2711 Switcher between - and + (Part 18)
P1851 O-ring (Part 19)
P3121 Doseringshous (Can not be bought separately) (Part 20)
P2794 Lockingscrew Part 21
P2712 Membran liftingarm (Part 22) on Drawing.

Black for main regulator!
Yellow for octopus!