The purge lets you blow stale smoke out of the base. A small ball or silicone valve sits in it and stops air coming back in. If the ball goes missing, wears down or rattles loose, the draw suffers, so it is one of the most useful spares to keep.
If you are not sure which size you have, measure the old ball, or look at the spares for your brand, such as Wookah spares, Dschinni spares or Kaloud spares.
Can I use a 12mm ball in a 10mm valve?
No. The ball needs to match the valve size, or it will either stick or let air through. Check the size in your shisha's details or measure the old ball.
Why does my purge leak air when I draw?
Usually the ball is worn, missing or dirty. Clean the valve, then fit a new ball or valve if it still leaks.
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