475

Backflow Preventer

475

Backflow Preventer

The 475/475V Reduced Pressure Principle Backflow Preventers are utilized in high hazard, potable water applications to protect against both backsiphonage and backpressure. The Model 475 is shaped in the n-Pattern, and is used in vertical flow up and vertical flow down applications, often for new or retrofit installations in compact spaces. Its single access cover reduces maintenance downtime and repair costs. Alternatively, the Model 475V is shaped in the z-Pattern and is installed in vertical flow up applications. Both models are equipped with the patented, center-stem guided Compound Check for low headloss, superior reliability, and unmatched performance.

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  • Available as a 475V for RP protection in a vertical upward flow path
  • "n" pattern construction space saving design is excellent for retrofit installation in small spaces
  • Epoxy coated ductile iron body resists corrosion
  • Utilizes the patented, center-stem guided Compound Check for reliable and superior performance
  • Single access cover reduces maintenance down time
RK6-375-SEAT1-ASSY

Seat Assembly #1 Poppet used with RK6-375-SEAT1-ASSY. Kit Contains Seat Assembly #1 Poppet.
RK6-375CK1

#1 Check Assembly Repair Kit, 6" 475DA and 475DAV used with RK6-375CK1. Kit Contains Seat Retainer #1, O-Ring, Seat, Bolt, Poppet Retainer (x4), Handle, #1 Poppet Assembly, Washer, Poppet Bolt (x4), O-Ring, Poppet Bolt (x4), Poppet Retainer, Seal Ring, Seat Assembly, #1 Poppet.
RK6-350-SEAT2-ASSY

#2 Seat Assembly Repair Kit, 6" 375ADA used with RK6-350-SEAT2-ASSY Kit Contains Seat Retainer #1 (x6).
RK4-RV475-HOSE

Relief Valve Hose Repair Kit, 4" and 6" 475DA and 475DAV used with RK4-RV475-HOSE. Kit Contains Sensing Tube, Elbow, and Nipple.
RK4-475-TUBE-ASSY

Pitot Tube Repair Kit, 4" - 10" 475DA and 475DAV used with RK4-475-TUBE-ASSY. Kit Contains Pitot Tube Assembly.
RK8-RV-COVER

Relief Valve Cover Repair Kit 8" and 10" used with RK8-RV-COVER. Kit contains Bolt, Cover (x6), Cover, and Sensing Tube Fitting.
RK8-RV475-HOSE

Braided Hose Repair Kit, 8" and 10" 475 and 475V used with RK8-RV475-HOSE. Kit contains Sensing Tube, Elbow, and Nipple.
RK8-RV475-ASSY

Relief Valve Assembly Repair Kit, 8" and 10" 475 and 475V used with RK8-RV475-ASSY. Kit Contains Relief Valve Elbow, O-Ring, Elbow/Relief Valve (x2), Bolt, Elbow/Relief Valve (x4), and Relief Valve Assembly.
RK8-LBF-VALVE-COVER

Cover used with RK8-LBF-VALVE-COVER.
RK8-375-SEAT1-ASSY

#1 Seat Assembly Repair Kit, 8" and 10" 375A used with RK8-375-SEAT1-ASSY. Kit Contains Seat Assembly, and #1 Poppet.
RK8-375RVCI

Relief Valve Complete Internals Repair Kit, 8" and 10" used with RK8-375RVCI. Kit Contains O-Ring, Upper Plunger, Upper Plunger, Diaphragm, Lower Plunger, Seal Ring, Seal Retainer, Washer, Bolt, Relief Valve Spring, Relief Valve Seat, O-Ring, Relief Valve Seat, and O-Ring, Relief Valve.
RK8-375

Complete Relief Valve Repair Kit, 8" and 10" used with RK8-375. Kit Contains O-Ring, Upper Plunger, Diaphragm, Seal Ring, Relief Valve Spring, O-Ring, Relief Valve Seat, and O-Ring, Relief Valve.
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