What is the difference between Watts 007 and 009?
The 007 is a Double Check Valve (DCV), the 009 is a Reduced Pressure Zone assembly (RPZ). The 007 is a double check valve and the 009 is a reduced pressure. The reduced pressure is for more of a high hazard situation. If there is backflow on the 009 it will dump out of the bottom of the unit to a drain.
Can a Watts 007 be installed vertically?
For repair kits and parts, refer to our Backflow Prevention Products Repair Kits & Service Parts price list PL-RP-BPD found on www.watts.com. Series 007 may be installed in either a vertical or horizontal posi- tion. Pipe lines should be thoroughly flushed to remove for- eign material before installing the unit.
What is a DCVA backflow preventer?
The DCVA is a system used to prevent a cross-connection when the backflow would not be hazardous to one’s health. The DCVA consists of a shut-off valve on either end and two check valves in the center.
How much does a 1 inch backflow preventer cost?
Installing or replacing a backflow preventer costs $300 for the average homeowner. However, actual project costs fall somewhere between $135 and $1,000 based on the system sizes and styles you choose.
What is a back siphonage?
Backsiphonage is a reversal of normal flow in a system caused by a negative pressure (vacuum or partial vacuum) in the supply piping. Backpressure is the reversal of normal flow in a system due to an increase in the downstream pressure above the supply pressure.
Why do I need a backflow preventer?
A backflow preventer is an appliance installed on your main water supply pipes to keep water continuously moving in one direction, which helps prevent contaminants from backflowing into your clean water supply. This ensures that the water is safe for drinking, bathing, washing, and any other home needs.
Why is my Watts backflow preventer leaking?
There is no one reason for backflow preventer leaks. For instance, it may freeze during the winter and be damaged when it’s turned on afterwards. Another cause for leaking might be damage to certain parts, which can happen no matter how old the device is. For one, you can try the backflow preventer repair kit.
Can a Watts 009 be installed vertically?
It can be installed vertically or horizontally (vent elbow required for vertical installation).
Can a Watts backflow preventer be installed vertically?
The 909 and LF909 Series backflow preventer is designed so that the critical level of the relief valve is positioned below the first check. This unique feature allows the valve to be installed either vertically or horizontally.
Can a Watts Rpz be installed vertically?
Series 909/LF909 may be installed in a vertical or horizontal line and in an accessible location to facilitate testing and servicing.
What does it mean if your backflow test fails?
If during the test we find that water continues to flow through the these shut-offs, the test cannot be completed and it would result in a failed test. Many contractors will tell you this assembly might need to be replaced, but likely just the shut-off valve would need to be replaced.
What is a small reduced pressure valve assembly backflow preventer?
Series LF909 Small reduced pressure valve assembly backflow preventer is designed to prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage or backpressure where there is a potential health hazard.
Is there a backflow preventer for drinking water?
Backflow Preventers. The risks to drinking water quality from backflow contamination incidents pose a constant threat—whether they’re nuisance, non-health hazards, or serious public health events. Plumbing codes mandate that potable water supplies be protected against backflow at all cross-connections.
What sizes do small diameter backflow preventers come in?
These small diameter backflow preventers are available in 3/4 to 2 in sizes. Series LF909 for small diameter assemblies has a compact modular design that facilitates easy maintenance for in-line repairs.
What are the risks of backflow contamination in drinking water?
The risks to drinking water quality from backflow contamination incidents pose a constant threat—whether they’re nuisance, non-health hazards, or serious public health events. Plumbing codes mandate that potable water supplies be protected against backflow at all cross-connections.