2.5 5000SS-OSY-LM-FS
Item Number: F0691568Brand - Ames
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- 2 1/2 inch Reduced Pressure Detector Assembly
- Weight: 183.0 lb
- Stainless Steel Body: Corrosion resistance, lightweight
- SentryPlus Alert® Flood Sensor: Detects continuous relief valve discharge
- OSY Shutoff Valves: UL and FM Approved
- Max Working Pressure: 175 psi
- Temperature Range: 33°F – 110°F
- Short end-to-end dimensions for easy retrofit
- Noryl® Check Assembly
Description
Description
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Flood Sensor Activation
- The integral SentryPlus Alert® flood sensor requires an add-on sensor connection kit for activation and communication.
- Connection kit options include BMS and cellular communication.
- The Sensor Control Monitor enables integration with BAS via RS-485 Modbus or the Nexa® platform through Wi-Fi connectivity.
- Without a connection kit, the flood sensor acts as a passive component and will not communicate.

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Additional Details
The AMES 5000SS Reduced Pressure Detector Assembly, 2 1/2 inch, prevents backsiphonage and backpressure of hazardous materials into potable water supplies in non-potable service applications such as irrigation, fireline, and industrial processing.
This compact backflow preventer is designed for continuous pressure piping applications and cross-connections identified as health hazards, featuring a lightweight stainless steel body and integral flood sensor.
WARNING: 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, consult your local water authority, building, and plumbing codes.
Flood Sensor & Alert System
- Features an integral SentryPlus Alert® flood sensor to detect continuous discharge from the relief valve.
- An add-on sensor connection kit is required to activate the flood alert feature.
- Compatible with BMS, cellular communication, or the Sensor Control Monitor for integration with BAS via RS-485 Modbus or the Nexa® platform via Wi-Fi.
- Sensor relays a signal for notification to facility personnel, limiting flooding and costly damage.
- The sensor does not alter assembly functions or certifications.
Construction & Design
- Stainless steel body and internal metal parts provide long-term corrosion resistance and maximum strength.
- Lightweight design reduces installation and shipping costs.
- Short end-to-end dimensions make retrofit installations easier.
- Bottom-mounted relief valve reduces clearance requirements, ideal for installation against an outside wall.
- Thermoplastic cam-check valves offer maximum flow at low pressure drop.
- Stainless steel relief valve features a balanced rolling diaphragm, eliminating sliding seals and lowering maintenance.
- Equipped with UL and FM Approved outside stem and yoke (OSY) resilient seated gate valves.
- Compact construction allows for smaller enclosures.
- Features reversible elastomer discs and bronze body ball valve test cocks.
- Designed for easy servicing with no special tools required.
Primary Applications
- Health hazard applications.
- Protection against backsiphonage and backpressure.
- Non-potable service for irrigation, fireline, or industrial processing.
- Detection of underground leaks and unauthorized water use.
Specifications
General
- Product Type: Reduced Pressure Detector Backflow Preventer Assembly
- Series: 5000SS
- Size: 2 1/2 inch
- Bypass Line: Less Meter (LM)
- Flood Detection: Sensor on relief valve (FS)
- Shutoff Valves: Outside Stem and Yoke (OSY) resilient seated gate valves
- Applications: Health hazard, non-potable service, continuous pressure piping
Materials
- Main Valve Body: 300 Series Stainless Steel
- All Internal Metal Parts: 300 Series Stainless Steel
- Check Assembly: Noryl® Thermoplastic
- Relief Valve: Stainless Steel with balanced rolling diaphragm
- Discs: Reversible Elastomer
- Test Cocks: Bronze Body Ball Valve
Performance & Operating Conditions
- Maximum Working Pressure: 175 psi (12.1 bar)
- Temperature Range: 33°F – 110°F (0.5°C – 43°C)
Certifications & Approvals
- AWWA C511-92
- ASSE 1047
- CSA B64.5
- UL Classified
- FM Approved
FAQs
What is the primary purpose of the AMES 5000SS Reduced Pressure Detector Assembly?
Is this backflow preventer suitable for drinking water systems?
How does the flood sensor feature work and what is needed for it?
What materials are used in the construction of this backflow preventer?
What are the operating pressure and temperature limits for this device?
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