Sprinkler ordinary temperature selection criteria

Question

Sprinkler ordinary temperature selection criteria

sprinkler1000 (Mechanical)

(OP)

25 Jan 18 16:51

What would be the choice criteria between the two temperature ratings that manufacturers have for ordinary temperature (135 or 155 ºF)?

Ambient temperatures are normal. Datasheet also specifies the same máximum ambient temperature for both (100ºF).

thanks

skdesigner (Mechanical) · Answer 1 · 2018-01-25 18:23:53

Whichever one is cheaper / easier to get. Probably going to be the 155 degree every time.

TravisMack (Mechanical) · Answer 2 · 2018-01-25 18:50:37

Check carefully. Some of the ex cov are only listed QR at the 135 temp, but SR at 155 temp. That could drive some things.

Travis Mack
MFP Design, LLC
www.mfpdesign.com
"Follow" us at https://www.facebook.com/pages/MFP-Design-LLC/9221...

sprinkler1000 (Mechanical) · Answer 3 · 2018-01-25 20:13:11

Thanks both for the help.

Good point Travis. I checked that with the Victaulic sidewall EC and it appears only listed by UL for 135ºF.

TravisMack (Mechanical) · Answer 4 · 2018-01-25 21:06:17

The devil is always in the details.

Travis Mack
MFP Design, LLC
www.mfpdesign.com
"Follow" us at https://www.facebook.com/pages/MFP-Design-LLC/9221...

cdafd (Specifier/Regulator) · Answer 5 · 2018-02-01 00:41:39

I don’t know.

If your lines are at say 20 feet and you pipe down for the valve,,

Will you really get air out??

Cidona (Mechanical) · Answer 6 · 2018-02-01 00:45:08

Think you're on the wrong thread cdafd :) Will respond on the other one.

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Sprinkler ordinary temperature selection criteria