Spain had eight shots on goal to three by the Black Sticks, had 26 circle penetrations to 17 and 66 per cent of possession to 34 per cent in the opposition half, and the only four penalty corners of the match.
"It was an advantage to get a goal early and again we proved that defence is a cornerstone of our performance under pressure," Batch said.
New Zealand weren't without their chances, both Jacob Smith and Stephen Jenness going close in the second spell.
The result puts New Zealand into the finals in Delhi early next year and leaves them one win away from securing a spot at next June's World Cup in The Hague, with the top three finishers guaranteed a place in that tournament.
Ninth-ranked Belgium beat Ireland 6-3 to take their place in the semifinals, while world No 2 Australia, with a 5-1 win over India, will play Netherlands.
The world No 3 team beat France 8-4 to take their place in the last four.