True, in my case they did, but if they just specified coupling on Travis' job, maybe they know the break will avoid the entire system being one huge antenna. Hopefully the wall is not metal stud!
-----Original Message----- From: George Church [mailto:[email protected]] Sent: Thursday, November 04, 2010 12:48 PM To: [email protected] Subject: RE: NON-METALLIC COUPLING And it may be they need non-metallic the length of the wall thickness -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Brad Casterline Sent: Thursday, November 04, 2010 1:38 PM To: [email protected]; [email protected] Subject: RE: NON-METALLIC COUPLING Good deal-- Ron F. idea of di-electric would probably work physically-- stop the flow of electrons-- but they are not 'non-metallic'. -----Original Message----- From: Travis Mack, SET [mailto:[email protected]] Sent: Thursday, November 04, 2010 12:32 PM To: [email protected] Subject: Re: NON-METALLIC COUPLING I was able to calc it down with a short piece of 3" CPVC pipe. Then just use the CPVC x Grooved adapters. Hopefully this will fly. It is all light hazard. On 11/4/2010 10:30 AM, Ron Greenman wrote: > 3" max on CPVC. > > On Thu, Nov 4, 2010 at 10:00 AM, Brad Casterline > <[email protected]> wrote: >> Do you mean the room is some kind of secure communications? I did one >> recently- No metallic PENETRATION of the walls- (like an antenna) - I guess >> a non metallic coupling would be like breaking the antenna- I went >> steel up >> to the wall, steel to cpvc, cpvc through the wall, then back to >> steel. Is 4" >> cpvc made? >> >> -----Original Message----- >> From: Travis Mack, SET [mailto:[email protected]] >> Sent: Thursday, November 04, 2010 11:07 AM >> To: [email protected] >> Subject: NON-METALLIC COUPLING >> >> I am working on a military project. I have to provide a non-metallic >> coupling on one side of wall. It is a penetration into a secured area. >> Any ideas on what to use as a non-metallic coupling for 4" sch 40 pipe? >> >> -- >> Please feel free to call if you have any questions or comments. >> >> Sincerely, >> >> Travis Mack, SET >> MFP Design, LLC >> 2508 E Lodgepole Drive >> Gilbert, AZ 85298 >> Office (480) 505-9271 >> Fax (866) 430-6107 >> >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum >> >> For Technical Assistance, send an email to: [email protected] >> >> To Unsubscribe, send an email >> to:[email protected] >> (Put the word unsubscribe in the subject field) >> >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum >> >> For Technical Assistance, send an email to: [email protected] >> >> To Unsubscribe, send an email >> to:[email protected] >> (Put the word unsubscribe in the subject field) >> > > _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
