You ask if it is ever allowed. That answer is yes. You can use ¾" CPVC, Copper and maybe even a few other types of pipe. Those are just the ones that pop into my head initially. If you are talking black or galvanized steel pipe, then no, it is not acceptable in a new system.
Travis Mack, SET M.E.P.CAD | Instructor / Support 181 N. Arroyo Grande Blvd. #105 I Henderson, NV 89074 www.mepcad.com<http://www.mepcad.com/> | m: 480.547.9348| Whatspp: +14805479348 Email: [email protected] AutoSPRINK | AutoSPRINK FAB | AutoSPRINK RVT | AlarmCAD From: Brian Harris <[email protected]> Sent: Wednesday, August 9, 2023 10:49 AM To: [email protected] Subject: [Sprinklerforum] 3/4" Nipple Is it ever allowed in a new system to use a ¾" nipple to a 1" x ¾" reducer, then to a 1" Sprig? I say no unless it's a revamped system. Brian Harris, CET BVS Systems Inc. bvssystemsinc.com<http://bvssystemsinc.com/> Phone: 704.896.9989 Fax: 704.896.1935
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