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This situation was not envisioned (or even allowed) when the appendix information was written. The appendix information provided has not caught up with use of PRVs. Keep in mind the appendix is not the code, just recommendations. In this case your trying to apply a recommendation that does not...

Does anyone have practical experiance using amp reading to at least reasonable approximate flow from a fire pump? In a situation that metering flow with a pitot is limited for a highrise standpipe acceptance test. I have testing flow meter for top outlet with residual, but measuring flow from...

Yes, I ordered one last night. Going to try the dremel impact style.

I would fill it out for them, and ask them to sign it.

I will let you know how this works out. The problem I'm running into now is the machine, and all of the 20 knockoffs on Amazon seem to be limited to 200mm x 130mm, or about 8" x 5". I can find old style aluminum placards that are 5 x 7, but they won't fit on the machine because they are...

Thanks for the link cdafd, I just wasn't coming up with the correct search terms to find something. I have over 30 to make for this project, this looks like a good deal.

Has anyone had to provide "mechanically embossed hydraulic placards"? any productive ideas besides ordering blank metal signs and a letter stamping kit from amazon? I will need to provide about 35 of these. The engineer will not be bothered with common sense on this one.

I like the look of this as well. Anyone using this in union markets? Kind of looks like a "pre-trimmed" device.

1/2" valve is too small, and the supplied info on this topic is a bit of a mess. My experience from using the Cla-Val pilot type PRVs is that one size less than 1/2 the size of the main valve will get the job done. I have noticed that if you look up listing on the FM Global Approval Guide, the...

Does any know the source of the reason I'm starting to see requirements for 2.5" "hove valves" at man doors in warehouses? I say "hose valves" because they are asking for 2.5" pipe to one valve, and 4" to multiple valves with no hydraulic requirements like a standpipe. We have never seen these...

Hilti Kwik-Bolt TZ seems to have the least embedment depth I have found. Only one that may be practical on some projects. Cost is about 4 times the wedge and sleeve anchors we were using. Per NFPA 13, 2013 Section 9.3.5.12.7.1 (seismic since 2010?) and 9.3.7.8 (new for hangers in 2013) the key...