That's not a recirc BOV.
The adjustable part for sound, is the red band, with holes in it, around the centre of the valve. The larger the hole used, the louder the sound. It'll probably change the characteristics of the sound too, depending on what 'setting' you use.
You can also adjust the valves 'sensitivity'. I.e. when the BOV will open. That's done bu the black adjustment screw on the top. Screw it in and the BOV will need more boost to open. Screw it out and the BOV will need less boost to open.
To connect it up, you'll need the big hose from the plenum, a cap to block the hole in the MAF to turbo pipe (this should be in the kit) and the vacuum hose from the OE BOV connected to the vacuum port on to of the BOV (labelled as 'vacuum' in the first pic above).
Once it's connected up, you can adjust it to get the sound and response you want.
Paul