If a negative pressure develops in the supply line, the loss of pressure permits the check valve to drop sealing the orifice while at the same time the vent opens admitting air to the system to break the vacuum. It cannot be used under continuous pressure. A cross-connection is a direct arrangement of a piping line which allows the potable water supply to be connected to a line which contains a contaminant. Please see the attachments. This valve is designed for continuous pressure non-health hazard applications in smaller supply lines, such as laboratory equipment, processing tanks, sterilizers, dairy equipment, and specifically for boiler feed lines. Department representatives asked the resident if she had a swimming pool, and, when she said yes, inquired how she filled the pool. Also used in . 0000014862 00000 n 4-season valve manifold & irrigation design. Plumbing codes mandate that potable water supplies be protected against backflow at all cross-connections. You must log in or register to reply here. 0000006055 00000 n Atmospheric vacuum breakers may be used only on connections to a non-potable system where the vacuum breaker is never subjected to backpressure and is installed on the discharge side of the last control valve. Looking for help with product questions, support or a quote? For general information regarding any approval certification partners identified in the specification sheet, please visit our certification partners websites: Looking for help with product questions, support or a quote? Watts Brass & Tubular #9D-M3 1/2 1/2" Backflow Preventer I had a new Watts Backflow Preventer Series 009M3QT 3/4" installed just in the last year for my irrigation system. 009M2-QT 2 - Watts Be sure to check your models number before ordering to make sure you get the right parts. Where is a hose bibb vacuum breaker used? They can be used anywhere you need to protect direct connections from foreign material that might enter the potable system in concentration which does not constitute a health hazard. Officials sent five samples from different water sources in the village to the Department of Health and Hospitals. 3 Valve No. City Water Distribution Division employees worked with a contractor to cut a section from the 8" diameter water main and replace a leaking tapping sleeve with a tee. or was I always accidently breaking it? They also ordered residents not to use their water supply, including for drinking, bathing, or cooking. 0000048711 00000 n 0000054680 00000 n A bitter taste and strong chemical odor in the water supply led a North Carolina clinic to contact the Wilson Water Distribution Division. These are pricey to replace but not so bad to fix. Backsiphonage can be created when there is a stoppage of the water supply due to nearby fire-fighting, repairs or breaks in city main, etc. CEU webinars designed to fit your busy schedule. ; It looks like you're using an ad blocker. conditions are detected. 0000017038 00000 n Backsiphonage When I installed my system in 1984, the RPPBFP was prescribed by the irrigation company that designed my system and I have not changed it. 29 0 obj <> endobj xref 29 66 0000000016 00000 n with safe, potable water. 0000031378 00000 n 0000003154 00000 n All major plumbing code bodies As water professionals, it's our duty to provide communities with safe, potable water by
