Vane Type Water Flow Device
Vane Type Water Flow Device
(OP)
Does anyone here know the distance required from a paddle type flow switch and a Elbow. I try finding such code but no luck yet.
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Vane Type Water Flow Device
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Vane Type Water Flow DeviceVane Type Water Flow Device(OP)
Does anyone here know the distance required from a paddle type flow switch and a Elbow. I try finding such code but no luck yet.
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RE: Vane Type Water Flow Device
ht
6" from a fitting. 24" from valve or drain.
Travis Mack
MFP Design, LLC
www.mfpdesign.com
RE: Vane Type Water Flow Device
RE: Vane Type Water Flow Device
This data sheet is also why some engineers specify no more than 18 fps in risers.
Travis Mack
MFP Design, LLC
www.mfpdesign.com
RE: Vane Type Water Flow Device
If you only have 6 inches between valve and ell-bow you really have no other choice correct.
RE: Vane Type Water Flow Device
If the data sheet stuff is not a requirement, then I guess one could install Tyco attic heads at 12" from the roof deck and have the deflector parallel to the roof as that is how NFPA 13 says a sprinkler should be installed. However, that would be an incorrect installation and not meet the sprinkler listing requirements.
Travis Mack
MFP Design, LLC
www.mfpdesign.com
RE: Vane Type Water Flow Device
You know how I feel about SHOULD vs SHALL
RE: Vane Type Water Flow Device
And then you have the likes of this
http://www.victaulic.com/Docs/lit/10.96.pdf
My understanding is that since the manufacture has received approval based on this arrangement that it is ok to have the WFS basically right beside the valve/drains/fittings.
To be honest seeens a bit 'bogus' that the manufacturers of these Riser Control Assemblies can get approval for the WFS close to the Valve/Drain but the WFS manufacturer can't.(?)
Posible that the term 'should' was chosen over shall to allow for these type assemeblies.(?)
Also, while having the conversation :),as you mentioned there are some projects that the Engineer can specifiy to reduce the velocity in risers to comply with the maximum allowable surge stated on the datasheet. However, since this is stated on the manufacturers datasheet, with the same theory that the manufacturers recomendations become requirement for installation, then it would seem that even if the engineer has not specified a restriction on the velocity in riser, that the restriction still exists by way of the datasheet, and therefore should be standard practice anyway. (I don't usually see this happening).
Thoughts?
RE: Vane Type Water Flow Device
Our first discussion had nothing to do with approved listed devices rather than field installations. If you have to install a flow device based on the original argument what would you do? Remember that the specs said should not.
RE: Vane Type Water Flow Device
Let Travis produce his shop drawings.
RE: Vane Type Water Flow Device
RE: Vane Type Water Flow Device
RE: Vane Type Water Flow Device