RE: Best Pressure Loss RPDA

5-6 PSI in an RPDA may be pushing your dreams a bit too much, but the C500 4" is 7-8 psi in H and N configurations between 150-300 gpm. -Original Message- From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of 321 via Sprinklerforum Sent: Thursday,

Re: Best Pressure Loss RPDA

On Thursday, April 1, 2021, 05:26:26 PM EDT, 321 wrote: - Forwarded Message - From: 321 To: Sprinklerforum Sent: Thursday, April 1, 2021, 04:57:40 PM EDTSubject: Best Pressure Loss RPDA What is the lowest PSI loss RPDA Backflow that anyone has found in 6" and 4".

Re: Best Pressure Loss RPDA

Yes...they specify OS&Y Valves. They also go with the RPDA because believe it or not...there is no place in the Florida Keys that is greater than 1700 feet from Salt Water. They a rightfully concerned about Saltwater Intrusion into the water system. ALL of the potable water in the Keys originate

RE: Lowest PSI RPDA Backflow

Try the Ames C500. -Original Message- From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of 321 via Sprinklerforum Sent: Thursday, April 01, 2021 2:30 PM To: sprinklerforum@lists.firesprinkler.org Cc: 321 Subject: Lowest PSI RPDA Backflow What is the

Re: Best Pressure Loss RPDA

OS&Y valves Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT 860-535-2080 (tel:860-535-2080) (ofc) 860-554-7054 (tel:860-554-7054) (fax) 860-608-4559 (tel:860-608-4559) (cell) > > On Apr 1, 2021 at 5:29 PM, (mailto:sprinklerforum

Lowest PSI RPDA Backflow

What is the lowest PSI loss RPDA Backflow that anyone has found in 6" and 4". I'm doing several jobs here in the Keys that I need to feed residential buildings and Ordinary GP 1 situations. Per Florida Keys Aqueduct Authority, all Backflows must be RPDAs and have Os&Y Gates. I like and have used

Re: Best Pressure Loss RPDA

M400 or c400 Sent from my mobile device Please excuse spelling, grammar, and auto correction. Mark Phillips Branch Manager Fire Sprinkler Design, Install, Inspections Service, Backflows, Fire Alarm Inspections 832-101 Purser Drive Raleigh NC 27603 Phone: 919-779-4010 Fax : 919-779-4014 Cell : 91

Fw: Best Pressure Loss RPDA

- Forwarded Message - From: 321 To: Sprinklerforum Sent: Thursday, April 1, 2021, 04:57:40 PM EDTSubject: Best Pressure Loss RPDA What is the lowest PSI loss RPDA Backflow that anyone has found in 6" and 4". I'm doing several jobs here in the Keys that I need to feed residential bu

RE: Head or Not?

Thank you Cary - that's a big emotional load off my shoulders. Our staff will be specifying Viking and Globe going forward... SL -Original Message- From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Cary Webber via Sprinklerforum Sent: Thursday,

RE: Head or Not?

No one 'perceives' you as a grumpy old guy Steve...we all know you're one... Cary Webber CFPS Director, Technical Services Reliable Automatic Sprinkler Co., Inc. 1470 Smith Grove Road, Liberty, SC  29657 Tel: 864-843-5161 -Original Message- From: Sprinklerforum On Behalf Of Steve

RE: Head or Not?

At the risk of being perceived as a grumpy old guy, I must nonetheless point out that per the NFPA Manual of Style and definitions found in NFPA 13, there is no such thing as a Sprinkler Head. They are "sprinklers". The term head is only officially used in the context of measuring pressure a

RE: Head or Not?

Mike- Excellent point, I skimmed right over the wording of 8.5.3.2.3. Thank you. Brian Harris, CET BVS Systems Inc. bvssytemsinc.com -Original Message- From: Sprinklerforum On Behalf Of Mike Morey via Sprinklerforum Sent: Thursday, April 01, 2021 9:52 AM To: sprinklerforum@lists.firespr

RE: Head or Not?

If the soffit is 3' wide then none of the obstructions against the wall allowances apply, you would have to either meet the requirements of table 8.6.5.1.2 or add a head under it. The counter top either has floor under it, or has cabinets under it, in the case of cabinets while you don't protec

RE: Head or Not?

I could have been clearer. The reason I asked is the soffit is 3'-0" wide but is over a counter top and I was wondering if that makes a difference whether a head is needed as I was taught years ago that "we protect floor space" Brian Harris, CET BVS Systems Inc. bvssytemsinc.com -Origin

Re: Head or Not?

The answer is located in the handbook commentary of 8.6.5.1.2 (4) and it states "Many situations in construction exist where soffits might actually be built out many feet below the sprinklers. A common example is a plant shelf. The intent of 8.6.5.1.2 is not to apply the soffit rule in these cas

RE: Head or Not?

You've protected the space under the soffit if your installation is acceptable based on that figure. The only question would be if the counter creates an obstruction below it. Presumably it's not >4' wide which would be the only trigger I could see for that being an issue. Mike Morey CFPS 32

Re: Head or Not?

Also dimensions might help > > On Apr 1, 2021 at 9:31 AM, (mailto:sprinklerforum@lists.firesprinkler.org)> wrote: > > > > In the absence of language about what that obstruction is, and what might be > below it, it seems clear the intent is to allow omission

RE: Head or Not?

In the absence of language about what that obstruction is, and what might be below it, it seems clear the intent is to allow omission of protection below. Cary Webber CFPS Director, Technical Services Reliable Automatic Sprinkler Co., Inc. 1470 Smith Grove Road, Liberty, SC  29657 Tel: 864-843

Head or Not?

NFPA-13 (2013) Figure 8.6.5.1.2(c) Would a head be required under the soffit if the soffit is over a counter? Floor space is protected from heads at the deck. Brian Harris, CET BVS Systems Inc. Design Manager bvssystemsinc.com Phone: 704.896.9989 Fax: 704.896.1935