Jabsoc/Raritan/Groco manual jokers are basically interchangeable (some have reported
leaks, but since we never did in testing, I think they are
installation errors). The basic dimensions are:
OD 2 5/16
ID 1 5/8
Flange 3/16
Total height 1 15/16
I've seen them, and they sure looked the same, but I didn't put a tape on it.
Any
marine store should stock either
Raritan or
Jabsco; which is better? I'm starting to lean towards
Raritan (seems to last a little longer), but the
Jabsco (easier flush, better urine resistance) is good too. I'd buy 2 of anything that fits... other than Groco, which is too stiff.
Remember, the slot is vertical.
Let us know what you learn.
(It seems Defender has the kits cheaper--http://www.defender.com/product3.jsp?path=-1|51|2234284|2234293&id=213760)