A device that allows water to go through it in one direction, but prevents it from going backwards in the opposite direction. Flow control maximizes efficiency and prolongs the life of the system. Boiler backflow preventer valve faqs bbfp requirements. Claval back flow preventers are primarily used in potable water for the health and comfort of the crew. Bronze double check valve assemblies with gear operated slow close. Watts 34 009m3 backflow preventer reduced pressure zone assembly. Celcon is a registered trademark of celanese corporation. Backflow parts usa is a master parts distributor and we carry backflow parts and backflow devices for watts, febco, wilkins, ames, and conbraco. Backflow preventers are assemblies with two check valves and two shutoff valves that prevent reverses in process flow. Maximize efficiency and prolong the life of a system by fine tuning flow and pressure for each zone. On large assemblies 21210, the model number is located on the name plate.
Lay length backflow chart american backflow specialties. Zurn industries llc backflow preventers cad details the zurn industries llc cad details below are complete drawings that can easily be downloaded, customized for your residential or commercial project, and included in your cad library for future use. A backflow preventer is like a oneway gate for water. Three ball valves for the connection of a differential pressure gauge. We offer the largest selection of backflow prevention solutions for any application. Backflow preventers selection guide engineering360. Choose, install and register a backflow prevention device suitable for your risk rating. Copy button triggers the copy to clipboard function, so it copies all the rows that exist in the page to your os clipboard and you can later paste it in some other software. Other products make reference to a vacuum break, i dont know the difference, but i can say that. For example, they are used to prevent boiler water, which. Valvcheq figure rp03 small backflow preventers emerson us. Stocking all major brands including watts, ames, febco, conbraco, wilkins, hersey, flomatic, midwest and more.
Call 18883966202 today, our friendly and professional staff is standing by to help you find the right parts. The water supply cross connection rules define cross connection as, a connection or arrangement of piping or appurtenances through which a backflow could occur. This can be either a registered break tankair gap or a double check valve with the ability. Class 125 gate valve lead free, rising stem, npt 30lf series lead free bronze rs gate valve with press connections, 200 cwp, sizes. Chapter 4 backflow prevention assemblies and devices. Febcos backflow prevention assemblies, which prevent the backward. It consists of stainless steel body construction with internal rubber components and is designed for continuous or. Watts 34 007m3qt dual check valve, backflow preventer. Backflow preventer parts supplying dependable backflow preventers and parts, knowledgeable sales department. Watts series lf007 cast copper silicon alloy fnpt 175 psi. It is a contractor favorite, providing a variety of residential and commercial customers with extreme stability, ruggedness, and ease of repair for more than 40 years. Class 125 200 cwp, 125 swp gate valve, threaded bonnet, solid disc, rising stem, npt. Home plumbing backflow prevention backflow prevention collapse all. Discounted backflow parts including ball valves, gate valves, test kits, and brass fittings.
These sturdy and reliable components are also used for seawater isolation. Combinations of male and female threads are also available. They may also include test cocks for each chamber within the assembly. Upstream of the backflow preventer is mandatory to install a strainer 577 series. Standard detail drawings 2300 series city of scottsdale. Db pipe interrupter with atmospheric vent and moving element. On small assemblies 342, the model number is cast on the body. Backflow prevention products guide watts water technologies. Zurn industries llc backflow preventers cad details. The 34 in 70xldu pressure reducing valve comes the 34 in 70xldu pressure reducing valve comes with double union fnpt connection. Find great deals on ebay for backflow preventer and backflow preventer 34. Watts double check and reduced pressure backflow preventers.
There are 3 types of backflow protection installation methods. Wilkins 34975xl2 34inch lead free reduced pressure backflow preventer. If you wish to install your own, you must make sure that your mechanism is compatible with the water source you will be using, and that you feel. Local code will specify what items in your area requires which specific type of backflow prevention device. 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. This backflow preventer quickly swaps out with the one that came with your faucet for easy use. Double check valve backflow prevention assembly for assemblies 3 thru 10 pdf. Ductile iron and stainless steel npt 175 psi backflow preventer.
Controllable, reduced pressure zone backflow preventer. Encapsulated solenoid with captive plunger used on every hunter valve provides hasslefree service. Powered by webasyst shopscript shopping cart software. Valve cartridge with integral check valve and discharge valve. A backflow preventer is designed for use with irrigation systems and water pipes, preventing water from flowing back up the pipe as you might guess. Backflow preventers have a variety of applications. Backflow solutions, inc was founded with the express purpose of working with backflow professionals and water purveyors to provide exceptional backflow management solutions. Kleenrite corporation watts 34 backflow preventer without. In turn, backflow means, water of questionable quality, wastes or other contaminants entering a public water supply system due to a reversal of flow. Backflow preventer 9d vacuum breaker 34 inch brass dual check with intermediate atmospheric vent threaded 0061888 175psi. An rpz valve is one of the safest and most reliable backflow preventer valves.
What factors can cause a backpressure backflow condition. It can also be adapted with a 14 or 38 inch tubing end and with a pipe thread end just by changing the end fitting. The regulator is opened when the upstream pressure is at least 3psi5psi 0. Watts number 909qt 34 npt reduced pressure backflow preventer with a double check valve assembly for nonhealth, low hazard crossconnections, and continuous pressure applications. Buy products related to backflow valve products and see what customers say about. 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. Cast copper silicon alloy fnpt 175 psi backflow preventer watts series lf007 epoxy coated cast iron flanged 175 psi backflow preventer watts series lf007 union 175 psi bronze double check valve assembly. The risks to drinking water quality from backflow contamination incidents pose a. It is furnished with ball type test cocks and quarterturn, fullport bronze ball valves for shutoffs. Most backflow preventers are mechanical devices which create a physical barrier to accomplish this.
Double check valve backflow preventers with water meter and. The 4 deringer 20g is designed for fire protection and waterworks applications. Most backflow preventers are used to keep unsafe water from reversing flow and entering the clean water supply. To learn more, download our new marine products brochure. Backflow preventer lf7r 34 inch lead free bronze dual check 0072204 175psi. Irrigation backflow preventers irrigation tutorials. They come equipped with a gauge, hoses and all required adapter fittings. Apollo valves model 40200tk3u backflow preventer test kit 3 valve the apollo valves backflow preventer test kits are compact, lightweight and portable testing devices.
Backpressure backflow is the reversal of normal flow in a system due to an increase in the downstream pressure above that of the supply pressure. 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. The bsi team is comprised of backflow industry professionals, with unparalleled experience and expertise in crossconnection control management. 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. Opened and closed thumb screw a couple of times and its working correctly at. Noncommunity systems that comply with subsection 4b of this section and the provisions of wac 51560600 of the upc which addresses the installation of backflow preventers at points of water use within the potable water system shall be considered in compliance with the requirements of this section. Because this item is not stocked in our warehouse, processing, transit times and stock availability will vary. This 34 x 34 in lead free dual check valve prevents the reverse flow of polluted water from entering into the drinking water supply at the service entrance or at individual outlets the valve consists of a lead free brass body construction, with two plastic replaceable check valves, and stainless steel springs. Backflow preventers of this type are suitable for the protection of drinking water systems. Its a little hard to get excited about a backflow preventer, but this one was a good purchase. Installation of a backflow prevention device water corporation. Dirtmagslim dirt separator with magnet for underboiler installation. Watts 1 reduced pressure zone backflow preventor, bronze, 009qt.
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