RE: SPRINKLERS INSIDE OVENS

I believe this question has been on the forum before and the question was WHY does one need to put sprinklers in an oven, especially if the oven temperature is only 300 degrees. Wet, dry, or pre-action, the problems are 1) the pressure rating of the components at the operating temperature of

Re: SPRINKLERS INSIDE OVENS

preaction systems are what I see for this On Wed, Oct 12, 2016 at 5:28 PM, Cesar Lira wrote: > I have a worry, > > I need to install sprinklers inside an Oven that work at 300°F. I know > that I need to use a sprinklers 360°F or high. > > But this system is tie to a same roof

RE: In-Rack Sprinkler Control Valve

I’ve seen this before. The premise is that if the ceiling system is impaired, the rack system in the same zone, being connected to a different source could still function. This one a wide open building so if you rolled up on it, there wouldn’t be an issue figuring out where the fire was.

SPRINKLERS INSIDE OVENS

I have a worry, I need to install sprinklers inside an Oven that work at 300°F. I know that I need to use a sprinklers 360°F or high. But this system is tie to a same roof grid. And my concern is that what happen with the heat, in the water, it temperature could go up to roof grid system, or

Re: In-Rack Sprinkler Control Valve

I thought the reason this was commonly done was driven by friction loss. As far as zoning alarm local jurisdictions commonly tinker with this area of model codes during adoption, and during adopting rulings. Sprinkler folks who think AHJ's do to much localizing would be shocked with what is

RE: In-Rack Sprinkler Control Valve

The building is 70,000 sq ft and a multi-tenant building Thank you James Crawford Phaser Fire Protection Ltd. Phone 604-888-0318 Fax 604-888-4732 Cel 604-790-0938 Email jcrawf...@phaserfire.ca From: Sprinklerforum

Re: In-Rack Sprinkler Control Valve

FM and xl gaps requires isolation valves and it's a good operationally practice because someone will break a head or line Sent from my Verizon 4G LTE Droid On Oct 12, 2016 5:25 PM, "Travis Mack, SET" wrote: Don't you want the racks separately controlled because they are

Re: In-Rack Sprinkler Control Valve

Why is it zoned? Just because it's bigger than 52K? One big open space? Not trying to be a smart ass (or maybe I am) but the FD won't fight a fire in zone 2 that is happening in Zone 1 bec aide an annunciation says here, not there, and it sounds like they'd be able too see the fire on entry. On

In-Rack Sprinkler Control Valve

I just came from a building where the in-rack sprinklers are connected into the adjacent roof system. The building has two roof zones, north and south, the in-racks are in the north zone but connected into the south zone (no control valve at the connection point) I have never ever thought

Re: Seeking false water flow alarm suggestions

As long as I'm paying for monitoring, I might as well have the switch. I guess I'll just get the delay switch. On 10/12/2016 10:57 AM, rongreenman . wrote: You'd need a hydro pump to overpressure your system but although your switch is doing what it should as mentioned, that switch does not

Re: Seeking false water flow alarm suggestions

You'd need a hydro pump to overpressure your system but although your switch is doing what it should as mentioned, that switch does not have a built in time delay according to earlier reply. Changing it to one with a time delay would solve the problem. But why not just disconnect it. The is no

Re: FDC on 13R

To support Steve's remarks, I submit the following picture, from FPC magazine a few years ago. food for thought? *Ken Wagoner, SET *Parsley Consulting*** *350 West 9th Avenue, Suite 206 *Escondido, California 92025 *Phone 760-745-6181* Visit our website

Re: Seeking false water flow alarm suggestions

I assume attaching a water hose to my test valve wouldn't help, as the pressure from inside and outside would be the same. How do you suggest I add pressure to my system? On 10/12/2016 9:52 AM, Steele, Andrew wrote: I've heard of contractors pumping up sprinkler systems a few lbs over

RE: Seeking false water flow alarm suggestions

I've heard of contractors pumping up sprinkler systems a few lbs over domestic supply, rather than leaving the sprinkler at supply pressure, so there is no subsequent flow alarm after running an Inspectors test. For example, our City water pressure trends up in the very late hours, then down

Re: Seeking false water flow alarm suggestions

How do you suggest rebuilding this check valve? On 10/12/2016 9:47 AM, Steele, Andrew wrote: My guess is the flow switch is doing exactly what it is supposed to do. Replacing it would give the same result as the working flow switch already there. The check valve would, if working, allow

Re: Seeking false water flow alarm suggestions

My guess is the flow switch is doing exactly what it is supposed to do. Replacing it would give the same result as the working flow switch already there. The check valve would, if working, allow water at a higher pressure into the sprinkler system leg only once and then it would check shut.

Re: Seeking false water flow alarm suggestions

So the question is... do I rebuild my check valve or do I replace my sensor with a delay sensor or both? On 10/12/2016 9:16 AM, rongreenman . wrote: You cannot get all the air out of a tree system unless you can purge every dead end. Still won't help if you have a check valve that isn't

Re: Seeking false water flow alarm suggestions

You cannot get all the air out of a tree system unless you can purge every dead end. Still won't help if you have a check valve that isn't holding. With a good check valve you will eventually get the system side up to the highest surge the city system hits. After that the surges won't push past

Re: FDC on 13R

AHJ won’t budge? It’s obvious to me there was no input obtained from the engine company. Carry extra stuff? Nah, already there on the engine as a preconnected hand line as 1.75 in. hose with 1.5 couplings. AHJ should’ve asked the engine company, would you rather connect two 2.5 hose lines

RE: FDC on 13R

I can see a single 2-1/2 so the trucks don't have to carry addition stuff, but multiple makes no sense. via Newton Mail [https://cloudmagic.com/k/d/mailapp?ct=pi=9.1.21=10.0.2=email_footer_2] On Wed, Oct 12, 2016 at 11:05 AM, Steve Leyton wrote: Okay … warning to

RE: FDC on 13R

Okay … warning to all y’all: I’ve only had one coffee and not entirely lucid yet so the following analogy may seem far-fetched. You know how when we were young and thought our parents thought and said crazy stuff? But as we get older we starting thinking and saying the EXACT SAME STUFF?

Re: FDC on 13R

I work in one area where they require a storz connection. So it looks weird to have a big 4" storz connection on a system with a 1.5" riser. Travis Mack, SET MFP Design, LLC 2508 E Lodgepole Drive Gilbert, AZ 85298 480-505-9271 fax: 866-430-6107 email:tm...@mfpdesign.com

RE: Seeking false water flow alarm suggestions

Barry, Your check valve may not be holding the pressure in completely. It's almost impossible to remove ALL the air. So now when your pump turns on, water will flow into the system because of the air pockets and activate the VS-SP. We do not allow or recommend that the flowswitch be

Re: Seeking false water flow alarm suggestions

Mike is right. However the problem relates to the draining and refill, so something has changed. It may be as simple as a check valve that was holding previously, but is not now. A possible solution would be to put a time delay relay between the VS-SP and the bell. Just a few seconds delay

Re: Seeking false water flow alarm suggestions

I'm not on municipal water. I'm on a well, but when my 2HP pressure pump kicks in, it does build pressure rapidly. I had to replace all the sprinklers early on, due to a recall, so that probably eliminated any air pockets... until this latest total drain. I'm beginning to believe the only

RE: FDC on 13R

Overkill is exactly what I was thinking too. AHJ won’t budge so Siamese it is…… Brian Harris, CET BVS Systems Inc. bvssytemsinc.com From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Todd Williams Sent: Wednesday, October 12,

RE: FDC on 13R

I have had to do this on some 13R group homes. The AHJ wouldn't accept a single 2-1/2. Seems like overkill. Two 2-1/2" connections fed from a 1500 gpm pump for a 55 gpm demand. We ran 4" to the riser room and connected with a 4 x 1-1/4 welded outlet. via Newton Mail

RE: Seeking false water flow alarm suggestions

Barry, The unwanted waterflow alarms are caused by the fact that the VS-SP does not have a retard and you are getting water surges because you are connected to a municipal water supply and have some air pockets in the sprinkler system. They are called unwanted alarms, not false alarms. The

RE: Seeking false water flow alarm suggestions

Open the system drain which is hopefully at the far end of the system while you fill to get air out Sent from my Verizon 4G LTE Droid On Oct 12, 2016 8:38 AM, "Steele, Andrew" wrote: Check valve failure, so that the sprinkler leg is no longer isolated?

Re: Seeking false water flow alarm suggestions

The check valve prevents water from coming back down and entering the home system, not the other way around, but I'm open to exploring any options. Any suggestions on how to check and repair this? I'm not sure if the picture was attached, as I can't see it here, so I'll give a link to

RE: [EXTERNAL] FM and Concealed Sprinklers

https://www.dropbox.com/sh/hrbhx9rsgiezrjr/AACbbRzFczpSvqTj5RZGLPRCa?dl=0 I put the XL spread sheets for the 'devices' in there too. It is interesting to make graphs of the bulb temp, air temp, and air velocity. anybody feel free to contact me off forum at: bcasterli...@gmail.com

RE: FDC on 13R

Double (Siamese) Brian Harris, CET BVS Systems Inc. bvssytemsinc.com From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Todd Williams Sent: Wednesday, October 12, 2016 9:11 AM To: sprinklerforum@lists.firesprinkler.org Subject:

Re: FDC on 13R

Single or double? via Newton Mail [https://cloudmagic.com/k/d/mailapp?ct=pi=9.1.21=10.0.2=email_footer_2] On Wed, Oct 12, 2016 at 8:07 AM, Brian Harris wrote: Looking for opinions. AHJ wants to swap out a single 1-1/2” FDC on a 13R system and replace it with a

RE: Seeking false water flow alarm suggestions

Check valve failure, so that the sprinkler leg is no longer isolated? -Original Message- From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Barry Levine Sent: Wednesday, October 12, 2016 1:01 AM To: sprinklerforum@lists.firesprinkler.org

FDC on 13R

Looking for opinions. AHJ wants to swap out a single 1-1/2" FDC on a 13R system and replace it with a standard 2-way (2-1/2") FDC. Thoughts, concerns, suggestions, etc. Brian Harris, CET BVS Systems Inc. Design Manager bvssystemsinc.com Phone: 704.896.9989 Fax: