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Standard Response vs Quick Response: Visual Difference?

Standard Response vs Quick Response: Visual Difference?

Standard Response vs Quick Response: Visual Difference?

(OP)
Is there a way to tell the difference between standard response sprinklers and quick response sprinklers by looking at the them?

My guess is by looking at the fusible link. From what I notice, standard response seems to have a thicker glass bulb. However, I'm only looking at 2 sprinklers so that could be just the manufacturers design and might not have anything to do with response.

RE: Standard Response vs Quick Response: Visual Difference?

SR sprinklers have a 5mm glass bulb.

QR sprinklers have a 3mm glass bulb.  

That is standard across all manufacturers in the US.  Otherwise, you can look on the sprinkler for SIN - sprinkler identification number and find it in the manufacturer's data sheet.

RE: Standard Response vs Quick Response: Visual Difference?

(OP)
That's what I figured. Thanks to the both of you.
Travis, where can I find that in some literature or maybe NFPA?

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