If the top valve is closed and the only pressure to be released is in the drip drum, is that enough volume that a second valve is needed? Would it be safe to simply plug the bottom of the drip drum instead of using a plug and valve? (the plug would only be removed when the top valve is closed)
Matt Grisé PE*, LEED AP Sales Engineer Alliance Fire Protection *Licensed in KS & MO 913.888.0647 ph 913.888.0618 f 913.927.0222 cell www. AFPsprink.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Tim Frankenberg Sent: Tuesday, July 13, 2010 10:44 AM To: [email protected]; [email protected] Subject: RE: Drum Drip- why 2 valves? Brad, If the container is plugged and the top valve open, it is exposed to system pressure which could be anything from 10 to 50 psi. That plug would be under that pressure and pose a dangerous removal. Regards, Tim Frankenberg -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Brad Sent: Tuesday, July 13, 2010 10:38 AM To: [email protected]; 'Sprinklerforum' Subject: RE: Drum Drip- why 2 valves? But with the top valve closed, there is no system pressure. -----Original Message----- From: [email protected] [mailto:[email protected]] Sent: Tuesday, July 13, 2010 10:35 AM To: Sprinklerforum; [email protected] Subject: Re: Drum Drip- why 2 valves? Limit the volume trapped when you pull the plug. WIth out it, it makes mess and can be dangerous if the system has high pressure for some reason. Sent from my BlackBerryR smartphone with Nextel Direct Connect -----Original Message----- From: "Brad" <[email protected]> Sender: [email protected] Date: Tue, 13 Jul 2010 10:27:40 To: <[email protected]> Reply-To: [email protected], [email protected] Subject: Drum Drip- why 2 valves? Why is the 'bottom' valve req'd? The 'top' valve is normally open-- close it, remove the plug, drain the drum, replace the plug, open the valve. Is there some practical reason for the bottom valve? _______________________________________________ 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) _______________________________________________ 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)
