when you flop the nuts

okay, easy first HH. How do you get more value? No interest in pot....

PokerRoom No-Limit Hold'em, $0.50 BB (9 handed) FTR converter on zerodivide.cx

MP2 ($12.10)
MP3 ($36.65)
CO ($3.00)
Button ($7.70)
SB ($30.75)
BB ($6.15)
UTG ($24.50)
Hero ($23.25)
MP1 ($14.85)

Preflop: Hero is UTG+1 with 9:spade:, K:spade:.
1 fold, Hero calls $0.25, 3 folds, CO checks, Button calls $0.25, SB completes, BB checks.

Flop: ($1.75) K:club:, 9:diamond:, K:diamond: (5 players)
SB checks, BB checks, Hero checks, CO checks, Button checks.

Turn: ($1.75) 2:spade: (5 players)
SB checks, BB checks, Hero bets $0.5, CO folds, Button folds, SB folds, BB folds.

Final Pot: $2.25

In this situation, I'd wait until the river to hopefully allow someone to hit the diamond draw, set, etc.