Hi Ralph, I am not experience, but I want to give my opinion .I think if you make the flow from PRV to be out of network (to drain e.g.).because the purpose of this valve is open when the pressure exceed the limited of the pump. Please All, if I am wrong correct. Thank you
________________________________ From: Ralphy Henderson <[email protected]> To: [email protected] Sent: Tue, December 7, 2010 7:20:35 PM Subject: Pumps - PRV Piped Back to Source Hello, When NFPA #20 requires a pressure relief valve in accord with 5.18.1.1 for a diesel pump is it an acceptable practice to pipe the PRV discharge piping back to the source piping? The source is a city water main. I see NFPA 20 has some info on this but I've never seen it done and was wondering if this would be designed similar to a flow meter test loop? Thanks, Ralph _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
