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Check valves

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whistler	28/08/2015 23:10:45
3 forum posts	What is the secret to getting stainless balls to seal in small check valves, if there is one? Are stainless balls as round as bearing quality balls? Even new purchased clacks don't seal completely.
Paul Lousick	28/08/2015 23:21:50
2276 forum posts 801 photos	Give the ball a tap with a hammer to seat it into valve body. If the valve still leaks, discard the ball as it may now be damaged by the hammer blow and replace it with a new ball. Paul. Edited By Paul Lousick on 28/08/2015 23:23:49
duncan webster	28/08/2015 23:50:59
5307 forum posts 83 photos	The seat needs to be perfectly round, drilled hole no good. Reamed or better still D bit. Having said that I use O ring seated valves, which do not leak. Anyone want the drawing send me a pm, no idea how to attach it to this site.
mick H	29/08/2015 06:39:51
795 forum posts 34 photos	Viton balls work very well in small check valves. Use a ball one size greater than the stainless. Mick

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