Our company will typical groove / weld down to 1-1/4", and thread 1". The decision on whether to groove or thread typical depend on the number of outlets. Its quicker for our installer to install one pipe verses many sticks on a single run.
On our jobs we don't typical see a limitation on the grooved size. We do see it on the pipe schedule. Jerry Van Kolken Millennium Fire Protection (760) 722-2722 From: Sprinklerforum [mailto:[email protected]] On Behalf Of Prahl, Craig/GVL Sent: Monday, November 20, 2017 11:54 AM To: [email protected] Subject: 1" grooved pipe and couplings and 2" and below grooved pipe I'm wondering what the consensus is amongst the group here on a couple issues as I look towards making some updates to our project specifications. #1, the use of 1" grooved pipe and fittings versus threaded. This would be using Sch. 40 pipe. I saw a presentation which if I were still a contractor would definitely make me take a good hard look at utilizing this technology. Do you use this or are contemplating using it? #2, the use of grooved pipe and fitting on pipe below 2" in diameter. Seems like the typical spec lists grooved for pipe above 2" but threaded below 2". Why? Why not grooved pipe below 2"? I would appreciate some thoughts and incite from those in the field. Thanks, Craig L. Prahl Fire Protection Group Lead/SME CH2M 200 Verdae Blvd. Greenville, SC 29607 Direct - 864.920.7540 Fax - 864.920.7129 CH2MHILL Extension 77540 [email protected]
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