I would say treat it as you would underground fire lines. Either PVC, CPVC, copper or brass. Copper or brass may need to be coated with something. Pressure should be pretty low if you talking about air supply for a dry system, so PVC or CPVC should be fine. I would use some kind of detection tape to help protect it from being cut.
Thanks, Eric Tysinger CET NICET III - 108988 Designer - Fort Myers Branch Wayne Automatic Fire Sprinklers, Inc. 4683 Laredo Ave. Fort Myers, Florida 33905 p: (239)433-3030 x1240 f: (239)433-3263 C: (239)633-9703 -----Original Message----- From: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Charles Thurston Sent: Tuesday, September 13, 2011 11:31 AM To: sprinklerforum@firesprinkler.org Subject: Underground Air Line Hello Sprinklerforum, We have a location where the air compressor was re-located from under the building to a "Dog House" about 30 feet away across a driveway from the main building. Long story short the pipe they put in the slot cut into the driveway and refilled with cement has corroded away. Looking for recommendations as to the best pipe to put back? My customer stated they wanted pipe "that will last longer than the building does". -- Best regards, Charles mailto:charl...@mbfsg.com Confidentiality Notice: This e-mail message, including any attachments, is for the sole purpose of the intended recipients and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
