I would say that test pipe would do the job, based on what it says in 6.10.4:
6.10.4 When the drain required in 6.9.1 is arranged as a test connection, a separate test connection shall not be required. Larry Keeping From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> On Behalf Of James Litvak Sent: September-20-18 11:00 AM To: sprinklerforum@lists.firesprinkler.org Subject: 13R Test and Drain Question On a 13R system, 6.9.2 specifies that the drain piping must be at least 1" nominal size. If a residential system riser has a 1" drain pipe to outside that has either a test valve with a 1/2" orifice or terminates at a broken sprinkler with a 1/2" orifice, does that drain piping still meet the requirements of 6.9.2?
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