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This 6 IN second check detector valve replacement kit for series 775 and 775DCDA prevents the backflow of pollutants that are objectionable but not toxic
Durable PVC Build – UV-stabilized in white
has a slotted design with openings that span the width of the grate and has an NDS Class E load rating when properly installed
Recommended for use on medium pressure heating equipment
50 Minimum Temperature-Fahrenheit 33 Outlet Connection Size 1/2 IN Outlet Connection Type Female Threaded Outlet Thread Type NPT Part Number 0009471 Series LFN45B Standard Reduced Pressure Setting-BAR 3
Watts LF909-QT-FDA-FS 6 - Part of the LF909 Large Series Window Well Cover This 6 IN second checkThis 6 inch lead free reduced pressure zone backflow preventer assembly prevents the reverse flow of polluted water from entering into the potable water supply due to backsiphonage and or backpressure. It is ideal for protection in continuous pressure piping applications and at cross connections identified as health hazards. This assembly consists of an epoxy coated cast iron body, FDA approved coated quarter turn ball valve shutoffs with lever