oring seal

[Henry07]

anyone has experience with oring sealing .
We have oring seal on butterfly valve disc. Flow push oring outside its groove.
there nay construction solution to solve and void this problem?

valve is used with water at max 6 bar

in the valve is generated quite hi velocity ...about 1,5 mxsec

henry

 

[caihui]

sorry, I have no idea about this matter. But I didn't see the o-ring sealed butterfly valve on plate. Is it the structure same as tri-eccentrical one?

 

[NGiLuzzu]

Henry07,
what are the current groove shape and o-ring material & section?
I believe there is a proper geometrical design and material selection capable of preventing extrusion of the seal... try also consulting o-rings Manufacturers catalogues and asking the question on the Forum819 within this site.


caihui,
I think that the valve in object is most probably a "standard" or high-performance butterfly valve (i.e. with no more than two off-sets), as the triple-offset rotary valves are usually metal seated (and then disc gasket is a metal spiral wound one).



Hope this helps, 'NGL

 

[Henry07]

correct ..the valve is a double eccentric b-fly the groove shape is square on conical taper(disc sealing aarea surface) ....

 

[NGiLuzzu]

Some more hints about o-ring grooves design:

-

http://www.parker.com/o-ring/Literature/05-5700.pdf

> > Section 5.29, pages 5-21 & 5-22;

-

http://www.pspglobal.com/problem/oversize-groove.html

;

-

http://www.ponnmachine.com/

> > MATERIALS > > Groove Design.


Hope this helps, 'NGL

 

[Henry07]

tks a lot everybody got info's needed

henry

 

[NGiLuzzu]

See also thread819-193887 within this site.

Bye, 'NGL