Before Frozen Dave became an SH wizard, he'd have chimed in here about the "mini-dams" that get created when roll-grooved piping has condensation puddling both in the pipe ends uphill from the groove intruding up into the bottom of the pie, as well as the water sitting in the gasket. Potential for corrosion and freeze/break. Not much we'll be doing about the puddling on the bottom of the pipe, short of using Sch40 and cutgrooving (or thread it!) but the area on the bottom of the coupling may be subject to a freeze/break.
Since he's native North Dakota, I'll defer to his expertise and experience with cold far surpassing anything I'd tolerate before moving south. Mark, you're entitled to an opinion on this and have remained in the same tundra. Do you experience problems from liquids accumulating in these lower areas? I can't ask Dave now, he'd suggest clean agent or Hi-Ex. glc -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of John Denhardt Sent: Friday, December 11, 2009 9:21 AM To: [email protected] Subject: RE: tri seal gaskets Any gasket that is listed for dry pipe service may be used. Most manufacture's recommend using one but the other "less expensive" gaskets are usually listed for dry pipe service. John John August Denhardt, P.E. Strickland Fire Protection Incorporated 5113 Berwyn Road College Park, Maryland 20740 Office Telephone Number: 301-474-1136 Mobile Telephone Number: 301-343-1457 FIRE SPRINKLERS SAVE LIVES -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Bob Caputo Sent: Tuesday, December 08, 2009 5:35 PM To: [email protected] Subject: RE: tri seal gaskets Other than NFPA 13, section 6.5.3.3 "Grooved fittings, including gaskets used on dry-pipe, preaction, and deluge systems, shall be listed for dry pipe service" ? -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Robert Thompson Sent: Tuesday, December 08, 2009 1:43 PM To: [email protected] Subject: tri seal gaskets Is there a code that required couplings to have tri seal gaskets in dry systems? Thank you Robert Thompson DAKOTA FIRE PROTECTION 1710 N. Washington Street Grand Forks ND 58206-5327 Phone # (701) 772-8820 Fax # (701) 772-7932 Email [email protected] _______________________________________________ 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)
