Operation and maintenance manual reduced pressure backflow. To learn more, download our new marine products brochure. These test kits are the most compact, affordable, and easy to use backflow test kits in the market. Secure your backflow devices with a backflow security device called sekureit.
City of scottsdale standard detail drawings 2300 series. Backflow preventers, double check backflow preventers flomatic. Backflow preventers have a variety of applications. Watts series 757 stainless steel flanged 175 psi backflow. Meters are simpler in that while they can be modeled as gpvs, they can simply be a minor loss on a pipe. We offer a variety of types of backflow preventers, including reduced pressure zone rpz assemblies, vacuum breakers, dual checks, and double check valve assemblies, along with accompanying test kits, valves, and enclosures.
The epa felt that metal flapgates were responsible for wasting millions of dollars annually by allowing water that did not need to be treated to backflow into treatment plants. Related projects for backflow preventer installation in oklahoma city, ok plumbers. Its a little hard to get excited about a backflow preventer, but this one was a good purchase. Learn how to eliminate paperwork, save time and improve your backflow testing accuracy with hindsites backflow testing software demo. The regulator is opened when the upstream pressure is at least 3psi5psi 0. Typically, the term backflow preventer has been used to stop backflow in a fresh water system caused by siphoning. I have 60 psi coming into my car wash via a 2 supply line. When they are both open the backflow device sprays water everywhere. How can i model a backflow preventer or reduced pressure zone rpz valve.
Call 18883966202 today, our friendly and professional staff is standing by to help you find the right parts. Viking supplynets extensive inventory of backflow valves and related devices includes leading products from wilkins, ames, watts, and. We offer a variety of types of backflow preventers, including reduced pressure zone rpz assemblies, vacuum breakers, dual checks, and double check valve. The zurn wilkins 350ada double check detector backflow preventer is ideal for fire protection applications. Drain backflow preventer, one way valve for pipes tubes in toilet bathroom floor drain seal keep out smell, 4 silicone. The pressure drop across the first check valve is approximately 6. The most effective method to prevent the sewer backflow is a simple device called a backwater valve. These test kits are the most compact, affordable, and easy to. Claval backflow preventers automatic control valves. Bronze double check valve assemblies with gear operated slow close. The wilkins 350 double check valve assembly is available in epoxy coated cast iron or stainless steel. Known as the silver eagle line of devices, the 957 is available in a number of valve and configuration options.
Double check valve assemblies backflow preventer 250 300 lf007 osy series download revit family files. The febco reduced pressure backflow preventer assembly consists of two independently operating, spring loaded check valves with a pressure differential relief valve located between the two checks. Db pipe interrupter with atmospheric vent and moving element. Testing must be performed by a certified backflow prevention tester pursuant to pennsylvania department of environmental protection regulations, part viii of document number 3833100111. Xc2 backflow software is a database software system for the administration of. If a single headloss value can be assumed, this can be modeled using a pbv that creates a specified head loss across the valve followed in line with a check valve. I also turned on the valve on the backflow device i think never done this before. We installed a 6 and a 12 backflow valve in drain lines. Prevents sewage backup into a residence or building as a result of a plugged sewer system. Means a mechanical backflow prevention device with an air inlet closed by a moving element when the device is in normal use but which opens and admits air if the water pressure upstream of the device falls to atmospheric pressure, the device being installed so that the flow of water is in a vertical downwards direction. It is illegal to install products that are not lead free in accordance with us federal or other applicable law in potable water systems anticipated for human consumption. Discounted backflow parts including ball valves, gate valves, test kits, and brass fittings.
Its metered bypass detects leaks and unauthorized water use. Oklahoma city backflow preventer installation are rated 4. Claval back flow preventers are primarily used in potable water for the health and comfort of the crew. Recently, many people have started to use the terms backflow preventer, backflow valve and backwater valve interchangeably so it may be confusing to see the backflow based terms used to describe sewage backflow prevention. Reviewed in the united states on december 11, 2017. Gf8080e the dual check valve or double backflow prevention valve is basically a stripped. Also does anyone have recommendations on what size circulators to use. Mawss testing software found on the mawss website under the cross connection. This combination fill valve and backflow preventer, 12 inch, is for use in commercial and residential hydronic heating systems to provide makeup water to the boiler, and prevent backflow when supply pressure falls below system pressure.
However, for information on listed approved backflow assemblies, contact backflow prevention at 6025342140. Red valve developed the revolutionary tideflex check valve in conjunction with the united states epa because a need was identified for a better backflow prevention device. Csa b64 series backflow preventers and vacuum breakers. The zurn wilkins 350ada double check detector backflow preventer is ideal for fire protection applications, with a metered bypass to detect leaks and unauthorized water use. Undersizing backflow preventers the foundation for cross. I need a backflow preventer on my supply line, and thought i could just use a check valve instead.
The relief valve consists of a hydraulically balanced diaphragm. Stocking a full line of backflow test kits and accessories. The bsi team is comprised of backflow industry professionals, with unparalleled experience and expertise in crossconnection control management. Watercad model with water meter and backflow preventer. Standard detail drawings 2300 series city of scottsdale. Backflow preventers selection guide engineering360. Oatey 43908 pvc backwater valve, 6inch, white pipe. The 6 deringer 20gx is designed for fire protection and waterworks applications. Local code will specify what items in your area requires which specific type of backflow prevention device. Backflow preventer on existing 6 main water treatment. Sekure it backflow theft prevention device youtube.
Backflow preventers are assemblies with two check valves and two shutoff valves that prevent reverses in process flow. Double check valve backflow prevention assembly for assemblies 3 thru 10 pdf. Honeywell bp900 backflow preventer is designed for continuous pressure applications on small supply lines. Protection agriculture, chemical or argricultural industries, collective or individual housing, workshop or business, all kinds of user are served by and linked to the same network. Today, watts operates out of north america, europe and asia and is known for setting the standard in valve technology. For additional information, request literature es709. Backflow preventer on existing 6 main backflow preventer on existing 6 main sjp8. Celcon is a registered trademark of celanese corporation. Backflow prevention device the simplest, most reliable way to provide backflow prevention is to provide an air gap. It uses an intermediate vacuum breaker to protect against backflow and back siphonage of contaminated water into portable water supplies. A dual check valve backflow preventor can be used for fire water service and can be put in a pit. Feb 02, 2010 i have 60 psi coming into my car wash via a 2 supply line.
Top backflow preventer installation services in staunton, va. I am now getting a low pressure trip on my ro machine when all of my pumps kick on during busy days. Final inspection of a completed toronto backwater valve installation. Planning and development backflow prevention program. Local code will specify what items in your area requires which. Backflow preventers are a vital component of any plumbing project with the function of keeping potable water separate from any potential hazards through many different applications. There is a 15 psi pressure drop across my watts rpz 909 backflow preventer. Top backflow preventer installation services in oklahoma. A simple but revolutionary extendable backwater valve that eliminates the need for expensive and unsightly manholes regardless of the burial depth. Backflow preventers are just minor loss elements in the model. Will an antisiphon vacuum breaker protect against a backpressure backflow condition.
A backflow prevention device is used to protect potable water supplies from contamination or pollution due to backflow in water distribution systems, water is normally maintained at a significant pressure to enable water to flow from the tap, shower, or other fixture. Double check backflow preventer, residential backflow preventer, sewage backflow preventer. This video outlines are new 2016, 25 year anniversary, backflow preventor test kits. I turned on the sprinkler valve in the utility room. An air gap is simply an open vertical space between any device that connects to a plumbing system like a valve or faucet and any place where contaminated water can collect or pool. Watts series 757 stainless steel flanged x grooved 175 psi backflow preventer.
Reduced pressure backflow preventers are best modeled using general purpose valves. Double check valve assembly backflow preventers are often found on water lines servicing fire sprinkler systems, commercial swimming pools, water treatment tanks, to name a few. Oatey 43908 pvc backwater valve, 6 inch, white pipe fittings. The wilkins 475 double check valve assembly is an epoxy coated cast iron device. Backflow parts usa is a master parts distributor and we carry backflow parts and backflow devices for watts, febco, wilkins, ames, and conbraco. If there is an increase in the downstream pressure over that of the supply pressure, the check valve would tend to modulate thus permitting the backflow of contaminated water to pass through the orifice into the potable water supply line. Watts watts valve watts valves watts backflow watts. Jan 18, 2016 this video outlines are new 2016, 25 year anniversary, backflow preventor test kits. The csa b64 series covers vacuum breakers and backflow preventers that are used in potable water supply systems to prevent crossconnections. Conbraco, febco, flomatic corporation, watts backflow prevention products.
The risks to drinking water quality from backflow contamination incidents pose a. Backflow preventer parts supplying dependable backflow. Water pressure may fail or be reduced when a water main bursts, pipes freeze, or there is unexpectedly high. Buy products related to backflow valve products and see what customers say about backflow valve products on. The best product on the market today to prevent backflow theft and protect your. Section 6 crossconnection and backflow prevention program. They may also include test cocks for each chamber within the assembly. Watts double check and reduced pressure backflow preventers. The backwater valve is ready to prevent sewer water from flowing back into the drain system. Double check valve detector backflow prevention assembly dcda. Backflow solutions, inc was founded with the express purpose of working with backflow professionals and water purveyors to provide exceptional backflow management solutions. Backflow municipal authority of westmoreland county. The most trusted backflow preventer installation services in undefined are on porch. Single sliding cover design, both checks are accessed from the top.
Valve flapper seals the system, blocking reverse flow. The model 350 is available with a number of valve options. Rectorseal 6 clean check extendable backwater valve s x s. The type 4210rs is a check valve or backflow prevention device designed to protect nitrogen and compressed air networks against backflow from directly connected systems. We offer the largest selection of backflow prevention solutions for any application. All tests and test data must be submitted by your tester using vepo crossconnex software. Backflow prevention products guide watts water technologies. The watts 957 series reduced pressure zone assemblies are a stainless steel body device.
282 1241 1053 1188 1035 251 1518 1341 222 342 1197 69 23 178 779 698 372 622 866 47 1358 582 857 415 540 308 764 1065 1404 425 1087 388 88 245 709