In our jurisdiction the backflow would be required where it enters the building from underground.
A long run of black steel pipe is not allowed without a BFP assembly. Art Tiroly ATCO Fire Protection/Tiroly 24400 Highland Rd CLE 44143 216-621-8899 216-570-7030 cell From: Sprinklerforum [mailto:[email protected]] On Behalf Of Kyle.Montgomery Sent: Wednesday, December 06, 2017 3:05 PM To: [email protected] Subject: High-Rise with Secondary Water Supply I’m working on a high-rise that has two water supply lead-ins. One comes in adjacent to the pump room, but the secondary supply has to run 200+ feet through the building. The plan was to have the backflow preventors in the fire pump room. Am I violating any code requirements and/or good design practices by doing this? (Note: I know that I’ll need an appropriate distance between the backflows and the pump suction and/or to use OS&Y valves). A couple of potential concerns have been raised: 1. 200-plus feet of “unmonitored” pipe running through the building. I guess there is some concern you could have a leak and not have any kind of alarm. Is there any code requirement to have a flow switch within a certain distance from where the water supply enters the building? 2. Are there specific code requirements for the pipe type between the underground lead-in and the backflow prevention device? We’ve been asked to provide galvanized pipe in similar scenarios before, but it was suggested that that might not be AWWA-compliant. Thanks for your input. Kyle Montgomery cid:[email protected] Aero Automatic Sprinkler Co. 21605 N. Central Ave. Phoenix, AZ 85024 Direct: 623.580.7820 Cell: 602.763.4736 [email protected] --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus
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