3 LF886V-DOSY-LM-FS
Item Number: F683235Brand - Febco
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- Size: 3 inch
- Weight: 267.0 lb
- Type: Reduced Pressure Zone Detector Assembly
- Lead Free construction
- ArmorTek® advanced epoxy coating
- Flood sensor with SentryPlus Alert® technology
- Ductile iron body for durability
- Stainless steel relief valve seat and check components
- Maximum Operating Pressure: 175 PSI
Description
Description
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This FEBCO MasterSeries LF886V Reduced Pressure Zone Detector Assembly features flange end connections designed to comply with ASME B16.1 Class 125 and AWWA Class D Flange standards, ensuring compatibility with standard flanged piping systems.
Flood Sensor Connectivity
- The integrated flood sensor requires an add-on connection kit for activation and communication.
- Connection kit options include interfaces for BMS (Building Management Systems), cellular communication, or the Sensor Control Monitor.
- The Sensor Control Monitor enables integration with BAS (Building Automation Systems) via RS-485 Modbus or the Nexa® platform through Wi-Fi.
Auxiliary Bypass Connection
- The assembly includes a compact 3/4" check assembly for the auxiliary bypass line, which is inline serviceable.

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Additional Details
The FEBCO MasterSeries LF886V 3 inch Lead Free Reduced Pressure Zone Detector Assembly (Type II) is designed to protect potable water systems from backpressure and backsiphonage contamination in high hazard/toxic industrial applications.
This robust assembly features OSY shutoff valves and includes a flood sensor with SentryPlus Alert® technology to detect continuous discharge from the relief valve, providing early notification of potential issues.
Construction & Durability
- Features a ductile iron valve body coated with ArmorTek®, a patented three-part advanced epoxy system engineered to resist microbial-induced corrosion (MIC) and protect exposed metal surfaces.
- Equipped with stainless steel relief valve seats and stainless steel check components for maximum performance and extended durability.
- Designed with inline serviceable assembly components that do not require special tools for maintenance.
- Includes a modular and repairable pressure differential relief valve and clapper check assembly.
Flood Sensor & Connectivity
- The integrated flood sensor detects excessive water discharges from the relief valve.
- An add-on connection kit is required to activate the flood sensor. Without this kit, the flood sensor functions as a passive component and will not communicate with other devices.
- When activated, the sensor can relay a signal for multichannel alerts (call, email, text) to notify personnel about potential flooding, and can integrate with BMS or cellular network communication.
Auxiliary Bypass
- Features a compact design that remains within the main valve assembly profile.
- Includes an inline serviceable 3/4" check assembly with field replaceable seat and disc.
- Capable of detecting potential underground water leaks and unauthorized water usage.
Specifications
- Product Type: Reduced Pressure Zone Detector Assembly (Type II)
- Nominal Size: 3 inch
- Brand: FEBCO MasterSeries®
- Model: LF886V-DOSY-LM-FS
- Lead Free: Yes (Wetted surface contains less than 0.25% lead by weight)
- Main Valve Body Material: Ductile Iron Grade 65-45-12
- Relief Valve Body Material: Ductile Iron Grade 65-45-12
- Coating: ArmorTek® Powder Coating
- Shutoff Valves: OSY Resilient Wedge Gate Valve (UL Classified and FM Approved)
- Check Seats: Stainless Steel
- Relief Valve Seat: Stainless Steel
- Disc Holder: Stainless Steel
- Elastomer Disc: Silicone
- Spring Material: Stainless Steel
- Clamp: AWWA C606
Performance Ratings
- Maximum Working Pressure: 175 PSI (12.1 bar)
- Minimum 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
Certificates & Approvals
- Foundation for Cross-Connection Control and Hydraulic Research (FCCCHR-USC)
- ASSE 1047
- UL Classified (US & Canada)
- FM Approved
- IAPMO/CUPC
- AWWA Standard C511 Compliant
- CSA B64.4
- End Connections: Compliant to ASME B16.1 Class 125 & AWWA Class D Flange