Share a Valve for Dry Sprinkler and Standpipe?

9/24/2019

Is it permissible to serve both an automatic dry sprinkler system and a dry automatic standpipe via the same dry pipe valve?

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4 Comments

Jonathan

9/24/2019 11:09:06 am

NFPA 14 (2016) 5.2.1.2.1* Not more than 750 gal (2839 L) system capacity shall be controlled by one dry pipe valve

Kman

9/24/2019 03:54:43 pm

NFPA 13 2016- 7.2.3.2 System size shall be such that initial water is discharged from the system test connection in not more than
60 seconds, starting at the normal air pressure on the system
and at the time of fully opened inspection test connection.

I guess if its under 750 Gallons and discharges in under 60 sec. for light hazard......go for it.

Dave Neesan

9/24/2019 10:22:29 pm

As long as the combined system capacity is not more than 750 gallons and if there is a separate standpipe control valve, it would be acceptable per NFPA. Separate dry pipe vales, entirely separate systems, would be a much better practice.

sean

9/25/2019 07:46:34 am

you need to meet the combination riser requirements from NFPA 14. I dont think you would be able to meet them on one shared valve.

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Share a Valve for Dry Sprinkler and Standpipe?

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