Water inlet valve broke again?

About 2 weeks ago my dishwasher was pouring water into the inside of it and would not shut off (even with the door open). I had to shut off the water under the sink to get it to stop. I replaced the water inlet valve with a new one and it fixed the problem. Now it started doing the same thing. Is there any other reason this would happen or is it as simple as the new part just going bad? Thanks.