2.5 5000SS-DOSY-CFM-FS
Item Number: F0692710Brand - Ames
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- Size: 2 1/2 inch
- Weight: 185.0 lb
- Body Material: 300 Series Stainless Steel
- Features: Flood sensor with SentryPlus Alert® technology
- Bypass Meter: Cubic Feet Per Minute (CFM)
- Maximum Working Pressure: 175 psi
- Temperature Range: 33°F – 110°F
- Valves: Domestic OSY resilient seated gate valves
- Approvals: ASSE 1047, CSA B64.5, UL Classified, FM Approved
Description
Description
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Flood Sensor Activation & Integration
- An add-on sensor connection kit is required to activate the flood sensor's alert features. Without this kit, the flood sensor acts as a passive component and will not communicate with other devices.
- Connection kit options include those compatible with Building Management Systems (BMS) and cellular network communication.
- The Sensor Control Monitor enables integration with Building Automation Systems (BAS) via RS‑485 Modbus or the Nexa® platform through Wi-Fi.
- A retrofit sensor connection kit is also available for existing installations.

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Additional Details
This 2 1/2 inch stainless steel reduced pressure detector backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and non-potable water into potable water supplies due to backsiphonage or backpressure. It is used in health hazard applications for systems such as irrigation, fireline, or industrial processing.
It is illegal to use this product in any plumbing system providing water for human consumption, such as drinking or dishwashing, in the United States. Before installing standard material product, consult your local water authority, building and plumbing codes.
Construction & Design
- Features a compact modular design with a short lay length.
- Main valve body manufactured from 300 Series stainless steel for corrosion resistance and maximum strength.
- Check assemblies are thermoplastic cam-check valves with stainless steel hinge pins, cam arm, and cam bearing, providing maximum flow at low pressure drop.
- Stainless steel relief valve features a balanced rolling diaphragm to eliminate sliding seals and lower maintenance costs.
- Bottom-mounted relief valve reduces clearance requirements when installed against an outside wall.
- All internal parts are 300 Series stainless steel.
- Domestic outside stem and yoke (OSY) resilient seated gate valves are included.
- No special tools are required for servicing.
Flood Detection System
- Includes a flood sensor with SentryPlus Alert® technology to detect continuous or excessive water discharges from the relief valve.
- The sensor relays a signal that triggers notification to facility personnel for corrective action, thus limiting flooding and costly damage.
- Flood alert feature is activated with an add-on sensor connection kit (sold separately) for compatibility with BMS and cellular network communication.
- Sensor Control Monitor integrates smart devices with BAS via RS‑485 Modbus or the Nexa® platform through Wi-Fi.
Bypass Line Features
- Equipped with a cubic feet per minute (CFM) metered bypass line to detect underground leaks and unauthorized water use.
- The bypass line includes a small diameter reduced pressure zone assembly and isolation valves.
Specifications
- Product Type: Reduced Pressure Detector Backflow Preventer Assembly
- Nominal Size: 2 1/2 inch
- Main Valve Body Material: 300 Series Stainless Steel
- Internal Metal Parts Material: 300 Series Stainless Steel
- Check Assembly Material: Noryl®
- Valve Type: Domestic Outside Stem and Yoke (OSY) Resilient Seated Gate Valves
- Bypass Line Size: 3/4 inch
- Bypass Meter Type: Cubic Feet Per Minute (CFM)
- Flood Sensor: Integrated with SentryPlus Alert® technology
- Maximum Working Pressure: 175 psi (12.1 bar)
- Temperature Range: 33°F – 110°F (0.5°C – 43°C)
Certificates & Approvals
- AWWA C511-92
- ASSE 1047
- CSA B64.5
- UL Classified
- FM Approved
FAQs
What is the primary purpose of this backflow preventer assembly?
What materials are used in the construction of this assembly?
Does this backflow preventer include a flood sensor?
What is the maximum operating pressure and temperature for this unit?
Can this product be used for drinking water systems in the United States?
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