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1-1/4" 4000BM2-FP Backflow Preventer

1 1/4 IN Bronze Reduced Pressure Zone Assembly, Right Hand Close Gear Operated Slow Close Isolation Valve Shutoff

  • Bronze body construction for durability
  • Gear operated slow close isolation valves
  • 2 Pre-wired tamper switches
  • Top mounted test cocks



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This 1 1/4 inch reduced pressure zone assembly is designed to prevent the flow of polluted water from entering into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. Its compact modular design facilitates easy maintenance with a single access cover for in-line repairs. It can be used in a variety of installations without the need of any special tools. It is ideal for protection in continuous pressure piping applications and at cross-connections identified as health hazards and from other contaminants found at the service line entrance. This assembly consists of a bronze body construction, right-hand close gear operated slow close shutoffs, female NPT inlet and outlet, top mounted test cocks, captured springs, two in-line independent check valves, replaceable check seats, and an internal relief valve for reduced space requirements.


Specification Sheet - 4000B-FP

Specification Sheet  4000B-FP Backflow Preventer


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Installation Instructions - 4000B-FP

Installation Instructions  4000B-FP Backflow Preventer


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Product  Warranty


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