Perhaps a small jockey pump or excess pressure pump would hold pressure if there is no leak.
Mike C Sent on the Sprint® Now Network from my BlackBerry® -----Original Message----- From: sam b <[email protected]> Date: Mon, 3 May 2010 23:08:01 To: <[email protected]> Subject: Re: Fire Pump but do you expect this to go down so much ,more than 2 bars even,.? am actually waiting for the status tonight...:) On Mon, May 3, 2010 at 11:02 PM, tom poisal <[email protected]> wrote: > sam, it is the temp rise/loss; when it gets to night time the water cools > and lowers the temp which lowers the psi/bar same with an overnight hydro > test..not much you can do about it that i know. > > > On Mon, May 3, 2010 at 2:57 PM, sam b <[email protected]> wrote: > > > Hii everyone > > > > > > My previos mail in this forum was regarding a temporary fire pump(only > > dieselPump) only. > > we have installed this fire pump for temporary fire fighting in the > site. > > The pump is 500 USGpm @ 20 Bar.(NOn Listed).The risers we have installed > up > > to 7 floors now. > > The pressure switch setting is kept such that when presuure drops below > 16 > > Bar the pump automatically starts. > > For the last 2 days we are seeing that the pump starts automatically at > > night time.In the daytime there is no considerable pressure loss also. > > our initial assesment was that it may due to air trapped inside ,as a > > result > > we installed air release valve in both risers .Also the NRV in the > > pumpdiischarge was replaced to ensure there is no leakage. > > > > Any guesses on whtmay b the reason? > > _______________________________________________ > > 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]<to%[email protected]> > <to%[email protected]<to%[email protected]> > > > > (Put the word unsubscribe in the subject field) > > > > > > -- > Tom Poisal, CET > _______________________________________________ > 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]<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)
