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KRS, Well, maybe "unauthorized" use is a little hasty. I dont know the daily use, because the DCD is the only meter on the system. We have put in for a daily logger. This business is a hospital, which is even scarier. But I have ran some numbers, and over a 6 month period, which is...

KRS, Sorry for confusion. Basically, there is no other meter on the fire lines except the bypass meter on the DCD. The guys go out and see a use on the bypass meter, record and go on. What the big deal is the amount of water that has been detected. Like 200,000 gallons. Thats too large to...

Hello, Hydrae, you are correct. We have contacted an engineer from Ames Fire Protection in California and he gave us some helpful info. Usually, DCDAs are required to carry a minimum flow of 3 gal/min through the bypass line. A flow higher than that usually opens the check valves. However...

Hello All! This is to update all who are interested. Our city has decided to provide the option of a detector check out by the curb in a can and a double check in the building. If a business can afford it, they can go with the existing option of a double check detector in a concrete vault by...

KRS Services, Yes, I would like more correspondence with you. My city's server is retarded, so I can not directly click to your e-mail link. If you could provide me with that, I will talk to you soon. Thanks again! Joy

KRS-Services, Could you possibly elaborate a tad more on how your company isolated the system? I have decided to recommend a detector check or at least a check valve in the street with the double detector in the building. We can even use meter cans for 4" and 6". We are concerned...

Thanks for all your replies. Im in Oklahoma, and frankly what Ive found for standards here is in question. USC and AWWA have helped in my research. Developers for our town have complained about the cost of these programs, stating they are a too expensive for progress. That is not true...

Hi! this may be a basic suggestion, but have you considered carbon filters placed near or over the outlet?

KRSServices, Thanks for your reply. Of course, the reason we are investigating this is because of money. A 4" DDC can be placed in a can, but 6" and larger has to be in a vault. The vault is a big majority of the expense, so if the detector is not in a traffic zone, I was...

Hi everyone! Our city is researching the issue of backflow preventors and double detector checks. The problem is, we have researched EPA, AWWA, and other agencies for standard specifications and can not find any. Basically it is up to the local authorities to determine what shall be used. If...

Saxon, Thank you for your reply. But no, Im referring to the line from the main, since that is really the only thing we are concerned with here. This fire system comes from the main with a 4" and has a single detector check before going to the fire suppression system. Quite interesting...

Hi All! This is the first question Ive posted, so please be gentle. Im reviewing plans for fire flow check valves and had a couple questions that no one @ my job can seem to answer. 1. Other than cost, why would a commercial business or a city use a 4" fire line. 2. Ive got a fire flow...