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Prevents the damage of products from water backflowFeatures:
DAVID DEL RIO from CORAL SPRINGS, FL UNITED STATE
Experience Level: Intermediate
Not for every air pump
The product itself is a very simple design. Has a spring loaded rubber seal that gets pushed out of the way by air and seals back in place when air is shut off. However the springs pressure is too hard for the air pump to push air thru, rendering the valve useless. I even tried blowing thru it and couldn't get air to go thru. Really poor design. The spring should have a light weight. And yes, I did check which way I was pushing air since its one way only... There's a large red arrow sticker on the valve and I opened it to sure the sticker was facing the correct way; it was. So I had to just throw it away. Not worth me sending back in for a refund. What a waste!
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