both opponents on the turn are loose passives.

Full Tilt Poker
Limit Omaha Ring game
Limit: $0.50/$1
9 players
Converter

Pre-flop: (9 players) Hero is MP2 with 2 A 3 3
UTG folds, UTG+1 calls, MP1 calls, Hero raises, MP3 folds, CO calls, 2 folds, BB calls, UTG+1 calls, MP1 calls.

Flop: Q 2 6 (10.5SB, 5 players)
BB checks, UTG+1 checks, MP1 checks, Hero bets, CO calls, 2 folds, MP1 calls.

Turn: J (6.75BB, 3 players)
MP1 checks, Hero checks

I never know what to do in these spots.

If we're the only nut low draw, is there value in a bet?

tough one...with the button or hu I probably bet to represent a Q and slow down if raised, but with 2 callers, a player behind and 2 3s in my hand I think you have to check the turn here.