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Unread 14-08-2012, 11:08
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David Doerr David Doerr is offline
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Re: Seeking SMC Pneumatics Advice

Quote:
Originally Posted by FrankJ View Post
... odd Cv value & ports size restrictions ... I try to make their job easy.
Yes, I find making the inspector's job easy makes my job easy.

A question about the 2012 port size rule (R71):
Quote:
...maximum 1/8 in. NPT port diameter...
What does that port size specification mean? The KOP supplied valve had M7 ports, not 1/8 NPT ports. Is a 1/8 NPT port bigger than an M7 port?

Would a valve with 1/4" push-to-connect ports be legal? (1/4" push-to-connect fittings work with the KOP-supplied 1/4" tubing.)

...or would we have to purchase valves with 1/8" NPT ports and then add 1/8" NPT to 1/4" push-to-connect fittings to be legal?

An installation would be a lot cleaner if the valves already had 1/4" push-to-connect ports since those interface directly with the required tubing.

Last edited by David Doerr : 14-08-2012 at 11:11. Reason: change "fittings" to "ports" for clarity