3 LF886V-OSY-CFM-FS
Item Number: F683225Brand - Febco
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- Product Type: Reduced Pressure Zone Detector Backflow Preventer
- Weight: 267.0 lb
- Size: 3 inch
- Lead Free: Yes (<0.25% lead by weight)
- Body Material: Ductile Iron Grade 65-45-12
- Corrosion Protection: ArmorTek® Advanced Epoxy Coating
- Max. Working Pressure: 175 psi
- Temperature Range: 33°F - 140°F
- Flood Sensor: SentryPlus Alert® Technology (requires kit for alerts)
- Bypass: Metered with 3/4" check assembly
Description
Description
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Main Connections
- This backflow preventer is designed for installation in water service lines, typically connecting via flanged ends compliant with ASME B16.1 Class 125 and AWWA Class D Flange standards.
Flood Sensor Connectivity
The integrated SentryPlus Alert® flood sensor requires an add-on connection kit for activation and communication. Connection kit options include interfaces for BMS (Building Management Systems), cellular network communication, or the Sensor Control Monitor which enables integration with BAS (Building Automation Systems) via RS-485 Modbus or the Nexa® platform through Wi-Fi. Without a connection kit, the flood sensor operates as a passive component and will not communicate alerts.

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Additional Details
The FEBCO 3 inch MasterSeries® LF886V Reduced Pressure Zone Detector Assembly is designed to protect potable water systems against backpressure and backsiphonage conditions for high hazard/toxic fluid applications in industrial settings.
This lead free assembly features advanced corrosion resistance, reliable performance, and integrated flood detection capabilities.
Main Valve Features
- Stainless steel relief valve seat and stainless steel check components for maximum performance and durability
- Inline serviceable assembly; no special tools required
- Captured modular spring assembly
- Reversible and replaceable discs
- Field replaceable seats
- Ductile iron valve body design
- ArmorTek® coating technology to resist corrosion of internals
- Modular and repairable pressure differential relief valve
- Clapper check assembly
- Captured O-ring design
Auxiliary Bypass Features
- Compact design; remains in main valve assembly profile
- Inline serviceable 3/4" check assembly; no special tools required
- Field replaceable seat and disc
- Detect potential underground water leaks
- Detect unauthorized water usage
Advanced Corrosion Protection
The ductile iron body is fused with ArmorTek®, a patented three-part advanced epoxy coating system engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal substrate.
Integrated Flood Detection
This backflow assembly contains a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve.
NOTICE: An add-on connection kit is required to activate the flood sensor. Without the connection kit, the flood sensor is a passive component that does not communicate with any other device. A retrofit sensor connection kit is also available for existing installations. Use of the flood sensor does not replace the need to comply with all required instructions, codes, and regulations related to installation, operation, and maintenance of this product, including the need to provide proper drainage in the event of a discharge. Watts® is not responsible for the failure of alerts due to connectivity issues, power outages, or improper installation. The information contained herein is not intended to replace the full product installation and safety information available or the experience of a trained product installer. You are required to thoroughly read all installation instructions and product safety information before beginning the installation of this product. Inquire with governing authorities for local installation requirements.
The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight.
Specifications
- Size: 3 inch
- Product Type: Reduced Pressure Zone Detector Assembly (Type II)
Materials
- Main Valve Body: Ductile iron Grade 65-45-12
- Relief Valve Body: Ductile iron Grade 65-45-12
- Coating: ArmorTek powder coating, applied to internal and external surfaces
- Shutoff Valves: OSY resilient wedge gate valve AWWA C515 (UL Classified and FM Approved)
- Check Seats: Stainless steel
- Relief Valve Seat: Stainless steel
- Disc Holder: Stainless steel
- Elastomer Disc: Silicone
- Spring: Stainless steel
- Clamp: AWWA C606
Pressure - Temperature
- Max. Working Pressure: 175 psi (12.1 bar)
- Min. Working Pressure: 20 psi (1.4 bar)
- Hydrostatic Test Pressure: 350 psi (24.1 bar)
- Hydrostatic Safety Pressure: 700 psi (48.3 bar)
- Temperature Range: 33°F - 140°F (0.5°C ~ 60°C) continuous
Nominal Dimensions (N-pattern)
- A: 29 1/8 in. (740 mm)
- B: 12 1/2 in. (318 mm)
- C: 6 1/4 in. (159 mm)
- D: 25 3/4 in. (654 mm)
- E: 17 3/4 in. (451 mm)
- F: 13 5/8 in. (346 mm)
- G: 28 1/4 in. (718 mm)
- H: 5 1/2 in. (140 mm)
- J: 11 1/8 in. (283 mm)
- K*: 3 3/4 in. (95 mm)
- L: 22 1/4 in. (565 mm)
- Weight**: 267 lb (121 kg)
Certificates & Approvals
- Foundation for Cross-Connection Control and Hydraulic Research at The University of Southern California (FCCCHR-USC)
- ASSE 1047
- UL Classified (US & Canada)
- FM Approved
- IAPMO/CUPC
- AWWA Standard C511 Compliant
- CSA Connections Compliant to ASME B16.1 Class 125 & AWWA Class D Flange
- CSA B64.4