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You either cut a hole, or when you pump the ball, put the tube in and then when it is almost out, leave it there. It should make a hissing sound and you should be able to feel some air blowing. you kill it with a kitchen knife you pop it or take the needle outof the pump to blow it up and just leave it in the Basketball

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15y ago
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15y ago

A waterpolo ball will deflate for the same reason as any other ball, i.e. if it has a puncture.

If you want to deliberately deflate a waterpolo ball then it is the same as a football, the easiest way is to get a valve used to pump the ball up, without the pump attached. This will allow the air to escape.

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14y ago

if you have a pump for the ball, then screw the needle off of the end of the pump and just stick that into the ball, it will let the air out

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Q: How do you lose air out of a water polo ball?
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