I won't copy what Craig and Tom have said, only to offer my own thoughts.
If the backflow serves only one sprinkler system, the OS&Y valves there function as a system control valve. Indeed §16.9.3.3.5 in the '22 and '25 editions of -13 specifically permits them to serve as a control valve to a sprinkler system provided they are listed for fire protection. And the supervision requirements of §16.9.3.3 would apply as well.
Why are you adding a PIV, and installing a control valve at risers? Is there more than one system?
sincerely,
Ken Wagoner, SET
Parsley Consulting
3002 Younger Drive
Harrisonville, Missouri 64701-3909
Phone: (760) 745-6181
Visit the website
Parsley Consulting
3002 Younger Drive
Harrisonville, Missouri 64701-3909
Phone: (760) 745-6181
Visit the website
On 10/20/2025 10:54 AM,
[email protected] wrote:
We are trying to remove PIVs, and install a main control valves at risers. AHJ is saying we must have a PIV. Also, we have BFPs before the PIVs. Can anyone help me find in NFPA 13 or 24 the section about PIVs?
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