Chapter 902 Backflow and Cross Connection Prevention Bylaw refers to CSA Standard for testing (including frequency), which means that the by-law requires annual testing for lawn sprinkler systems. When it does, the pressure is going to be exerted onto the middle of the valve’s diaphragm. Test the water heater’s pressure release valve by lifting the lever and allowing it to snap back. Be sure the valve to the sprinkler system valve is off in addition to the supply valve from the house. For more information on backflow preventers and requirements, contact us by phone at 519-741-2600 ext. Once the mainline has charged and there is no evidence of leaks, open the ball valve on the Backflow device all the way. [21] 4840 or by email . Connectors are assigned a gender, abbreviated M or F. An example of this is a "3 ⁄ 4-inch female adapter NPT", which would have a corresponding male connection of the same size and thread standard (in this case also NPT).Common piping and plumbing fittings. The pressure regulators, installed into the faucet after (downstream of) the backflow device or filter, offer reliable pressure control and provide consistent outlet pressures over a … For a sprinkler valve with a solenoid to work, certain conditions have to be met. From the 2016 Edition of NFPA 13 8.16.1.1.3.1 Where there is more than one source of water supply, a check valve shall be installed in each connection. If a zone or station seems to be stuck on and you are sure the clock is turned off and the selenoids two finger tight it may be that the small bleed screw located next to the selenoid needs to be snugged down. Caution: Do not conduct this test on units that are five years old or older — consult a … FHT Backflow Preventer with 150 Mesh Filter Backflow Preventer and 150 Mesh Filter quickly Backflow Preventer and 150 Mesh Filter quickly and easily connects to any standard outdoor faucet, garden hose or component. Set up the control valve and backflow preventer in the next zone. The flow control bypasses the automatic valve features allowing the valve to be closed in an emergency by turning a handle just like a standard manual valve. First, there has to be a water supply that goes into the valve. Turn Off All Water: Start by making sure there isn’t any water being used inside or outside your home including lawn or garden irrigation, toilets, clothes washers, dishwashers, faucets, icemakers, and automatic backflow cleaning in whole house water filters. Piping or tubing is usually inserted into fittings to make connections. Check Flow Indicator: open the cover on the water meter at the street to see if it has a flow indicator. 3/4 in. More important is that it also allows the valve to be “throttled”, that is, the water flow may be adjusted to any rate desired. Then turn ON the water supply valve from the house to seat the Bell valve (and this avoid damaging your sprinkler zone valves) check for leaks, then open the valve to your sprinkler system and your done! Safely prevents backward flow of water from a Drip irrigation system into your potable/clean drinking water supply. A backflow preventer is like a one-way gate for water. Once you have successfully installed the sprinkler heads on the first zone, move on to the next zone. Working in sequential order will keep you from overlooking any part of sprinkler system or accidentally forgetting to install a sprinkler head. If working properly, the valve should allow a burst of hot water into the drain pipe. Most backflow preventers are used to keep unsafe water from reversing flow and entering the clean water supply. Backflow Preventer Basics: Backflow Preventer definition: A device that allows water to go through it in one direction, but prevents it from going backwards in the opposite direction. When multiple water supplies serve the same fire sprinkler system, each must have a check valve.

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