Height Requirements for Riser Components

1/24/2019

For fire sprinkler riser assemblies that include a control valve, waterflow switch, check valve, inspector's test and drain, or a dry/pre-action system valve, are there any height requirements or limits with any of these components?

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3 Comments

Wayne Ammons

1/24/2019 07:41:56 am

System valves and gauges are required to be accessible for operation, inspection, tests, and maintenance.

The definition of "accessible" is open to interpretation. NFPA appendices refer to 7 ft. above the floor as an accessible location. I have also seen valves located higher that require the use of step ladders or even a lift be deemed accessible.

When designing system risers, I always try to limit any valve height to approximately 7 ft., within reach of an average height person. I will also mention the minimum distance requirement of 24" between vane type water flow switches and valves or drains seems to be typical and is stated on manufacturer's data sheets.

Nimal Tissa Wijetunga

1/24/2019 11:53:32 am

I maintained at 1200 mm to 1400 mm from the grade level.

Ivonn link

1/24/2019 02:00:26 pm

System valves and gauges are required to be accessible for operation, inspection, tests, and maintenance.

I tried to put in drawings details from the riser with the control valve at 4 - 5 ft, also the inspection, test and drain

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Height Requirements for Riser Components

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