Comments on: Pneumatic pinch valve, 1/2″ version http://www.thegatesofdawn.ca/wordpress/posts/2008/11/27/pneumatic-pinch-valve-2/ WARNING: This blog contains writings known to the state of California to cause cancer and birth defects or other reproductive harm. Tue, 07 Feb 2012 13:25:58 +0000 hourly 1 http://wordpress.org/?v=3.1.3 By: piper http://www.thegatesofdawn.ca/wordpress/posts/2008/11/27/pneumatic-pinch-valve-2/comment-page-1/#comment-151099 piper Wed, 30 Dec 2009 16:12:58 +0000 http://www.thegatesofdawn.ca/wordpress/?p=410#comment-151099 I haven't actually built the system around that valve design yet. The silicone tubing I used is just a fairly generic one. I just figured it would last longer than latex tubing from Home Depot, which will grow brittle just sitting there. If long life is desired, I expect you might do well with the special tubings designed for peristaltic pumps. They're extremely resilient, designed specifically for this kind of constant flexing. I haven’t actually built the system around that valve design yet.

The silicone tubing I used is just a fairly generic one. I just figured it would last longer than latex tubing from Home Depot, which will grow brittle just sitting there.

If long life is desired, I expect you might do well with the special tubings designed for peristaltic pumps. They’re extremely resilient, designed specifically for this kind of constant flexing.

]]> By: Peter Crisp http://www.thegatesofdawn.ca/wordpress/posts/2008/11/27/pneumatic-pinch-valve-2/comment-page-1/#comment-151074 Peter Crisp Wed, 30 Dec 2009 06:02:39 +0000 http://www.thegatesofdawn.ca/wordpress/?p=410#comment-151074 O found your entry from a Google search. I was wondering how the fatigue life is holding up for this valve? I think I can modify this design for animatronics applications. Thanks for the postings! Regards, Peter Crisp, Surrey, BC. O found your entry from a Google search. I was wondering how the fatigue life is holding up for this valve? I think I can modify this design for animatronics applications. Thanks for the postings! Regards, Peter Crisp, Surrey, BC.

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