XDEEP Complete OPV
XDEEP Complete OPRV (screwed) - one part connects onto the BCD wing and the other part screws into it to create the seal. Fits the thread for all xDEEP and Tecline BCDs and many other brands.
The diameter of the top screw area 50mm (2"). Rubber plug at base approx 35mm (< 1.5"). Use as a replacement for a damaged OPRV or keep one as a spare, just in case.