Quote:
Originally Posted by RNajarian
UPDATE:
I sent an email to the company that makes the frangible bulbs. Here was their response. . .
The gem F680 is UL listed for a maximum pressure of 175psi. Not Maintaining your designed system pressure will affect your system operating correctly.
So at 150 PSI it would appear the system likely will not inadvertently go off.
Gives me a little breathing room to figure out the 150 PSI issue.
|
A new install is typically tested to 200psi for 2 hours or 50psi over working pressure if the working pressure is in excess of 150psi.
I would worry about the heads, I’m sure there’s a safety factor built into that 175psi max.
Have you called zurn?
EDIT: Out of curiosity, I pulled up the specs and they recommend multiple PRV where the desired reduction is 4 to 1. That’s not your requirement but they also state that you’re not to bottom out the adjustment.
I wonder if a second PRV in series wouldn’t solve your issue.