Seat angle for simple non return ball valve
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Re: Seat angle for simple non return ball valve
Re: Seat angle for simple non return ball valve -- neilj	Post Reply	Top of thread	Forum

Posted by: randykimball ® 12/15/2005, 23:21:11 Author Profile eMail author Edit

Angle of a conical? I'm thinking a tangent match at the diameter required to match the opening through the ball...... The worst suggestion of your lifetime may be the catalyst to the grandest idea of the century, never let suggestions go unsaid nor fail to listen to them.

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Re: Seat angle for simple non return ball valve
Re: Re: Seat angle for simple non return ball valve -- randykimball	Post Reply	Top of thread	Forum

Posted by: Walfriese ® 01/12/2006, 05:58:13 Author Profile eMail author Edit

It is depending on the product and the material of the ball. E.g. if the ball has a low shore hardness of maybe 70 or less and if you use a steep angle at a vacuum application the ball will get stuck, because the return flow will be at an extremely high velocity, if you hahe a flat angle and a hard ball like a PTFE one and you have high viscose products like shampoo ot margarine the ball will not seal at all. For simple applications like water at 2.5 m/s, the angle is nat critical. If you want to design a valve, the answer with the tangent does not really help you a lot.

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