Or ing check valve.... more Q's

Or ing check valve.... more Q's

Joined: March 1st, 2002, 12:22 am

March 27th, 2012, 7:43 pm #1

Last edited by dan_house on March 27th, 2012, 7:52 pm, edited 1 time in total.
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Joined: November 28th, 2002, 6:26 pm

March 27th, 2012, 9:48 pm #2

My suggestion for the split lockwasher is to put it between the screw head and the surrounding metal, with the O-ring around the washer - thusly - so that the screw can be adjusted for correct O-ring preload. To do it blind (e.g., down inside a valve body), you could probably simply count turns of the screw.



Steve
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Joined: November 28th, 2002, 6:26 pm

March 27th, 2012, 10:18 pm #3

...of an existing valve body that's already set up for a spring-and-plunger checkvalve, like a 39x.

Steve
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Joined: March 1st, 2002, 12:22 am

March 27th, 2012, 10:47 pm #4

My suggestion for the split lockwasher is to put it between the screw head and the surrounding metal, with the O-ring around the washer - thusly - so that the screw can be adjusted for correct O-ring preload. To do it blind (e.g., down inside a valve body), you could probably simply count turns of the screw.



Steve
Seems like a gizmo that could correct a lot of short comings, and be adapted in a number of ways to simplify some setups.

 


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Joined: March 1st, 2002, 12:22 am

March 27th, 2012, 10:48 pm #5

...of an existing valve body that's already set up for a spring-and-plunger checkvalve, like a 39x.

Steve
or are the gains not big enough to dink with?

dr_subsonic's pneumatic research lab

the Lunatic Fringe of American Airgunning
Southwest Montana's headquarters for Airgunning Supremacy
Proud Sponsor of team_subsonic
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Joined: November 28th, 2002, 6:26 pm

March 27th, 2012, 11:06 pm #6

...in a "skeleton valve" geometry where the exhaust and inlet ends of the valve are connected only by the body tube.

For example: http://www.network54.com/Forum/275684/t ... Snapshots-

Steve
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Joined: November 28th, 2002, 6:26 pm

March 27th, 2012, 11:08 pm #7

...and just plain cool airgun.

Thanks again, James!

Steve
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Joined: September 25th, 2006, 2:19 pm

March 28th, 2012, 12:34 am #8

My suggestion for the split lockwasher is to put it between the screw head and the surrounding metal, with the O-ring around the washer - thusly - so that the screw can be adjusted for correct O-ring preload. To do it blind (e.g., down inside a valve body), you could probably simply count turns of the screw.



Steve
Thinking that the 0-ring should be directed where the leak joint is.
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Joined: November 28th, 2002, 6:26 pm

March 28th, 2012, 2:18 am #9

...created by the leak joint(s)?

Please note the "(s)". The O-ring will respond to, and seal, all - regardless of how many there may be. The only limitation is the compliance and strength (to resist extrusion failure) of the ring.

Steve
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Joined: September 25th, 2006, 2:19 pm

March 28th, 2012, 2:17 pm #10

will require considerable deformation of the o-ring to seal them. Will the initial sealing capability of preload be sufficient to withstand the forces required to deform the o-ring to seal the leaks before the preload seal gives away?

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