4 LF886V-DOSY-CFM-FS

Item Number: F683215
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$16,124.70
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Product Type: Reduced Pressure Zone Detector Assembly (Type II)
  • Weight: 342.0 lb
  • Size: 4 inch
  • Lead Free: Yes
  • Body Material: Ductile Iron with ArmorTek® Coating
  • Flood Sensor: Integrated SentryPlus Alert® technology
  • Maximum Working Pressure: 175 psi
  • Shutoff Valves: Domestic OS&Y
  • Bypass: Cubic Feet per Minute (CFM) Metered

Description

The FEBCO 4 inch Lead Free MasterSeries® LF886V Reduced Pressure Zone Detector Assembly (Type II) protects potable water systems from high hazard/toxic backpressure and backsiphonage. This robust assembly features a ductile iron body with ArmorTek® epoxy coating for advanced corrosion resistance and extended life. It includes domestic OS&Y shutoff valves, a CFM metered bypass for leak detection, and an integrated SentryPlus Alert® flood sensor to detect relief valve discharge. The unit is UL Classified and FM Approved, with a maximum working pressure of 175 psi and a temperature range of 33-140°F, ensuring reliable performance for critical installations. Item number F683215.

Help Me Connect

Flood Sensor Activation

To activate the integrated flood sensor and enable alert notifications, an add-on connection kit (sold separately) is required. Without this kit, the sensor remains a passive component and cannot communicate or send alerts.

Connection Kit Options

  • Building Management System (BMS): For integration into existing building automation networks.
  • Cellular Communication: Enables remote alerts via call, email, or text.
  • Sensor Control Monitor: Integrates with Building Automation Systems (BAS) via RS-485 Modbus or connects to the Nexa® platform via Wi-Fi for comprehensive monitoring.

System Compatibility

This backflow preventer is designed for installation on potable water systems to protect against backpressure and backsiphonage conditions for high hazard/toxic applications. Its end connections are compliant to ASME B16.1 Class 125 and AWWA Class D Flange standards, allowing for reliable installation into compatible flanged piping systems.

Installation Orientation

  • Can be installed in Horizontal (N-Pattern) orientation.
  • Can be installed in Vertical Up (Z-Pattern) orientation.
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Additional Details

This 4 inch FEBCO MasterSeries® LF886V Reduced Pressure Zone Detector Assembly (Type II) is designed to protect potable water systems from backpressure and backsiphonage conditions in high hazard/toxic applications, such as industrial installations. It is primarily used where local codes mandate protection against non-potable water being pumped or siphoned back into the drinking water supply.

Key Features

  • Equipped with domestic OS&Y shutoff valves and ball valve test cocks.
  • Features two independently acting clapper style check modules with replaceable seats and disc rubbers.
  • Includes a cubic feet per minute (CFM) metered bypass to detect water leaks and unauthorized usage.
  • Inline serviceable assembly designed for easy maintenance without special tools.

Corrosion Protection

  • The ductile iron body and internal components feature ArmorTek® powder coating, a patented three-part advanced epoxy system.
  • This coating is engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal surfaces.
  • Incorporates a stainless steel relief valve seat and stainless steel check components for enhanced durability.

Flood Detection & Alerting

  • A built-in flood sensor with SentryPlus Alert® technology detects excessive water discharges from the relief valve.
  • When activated by an add-on connection kit (sold separately), the sensor relays a signal to trigger multichannel alerts (call, email, text) to personnel about potential flooding events.
  • Connection kit options allow integration with Building Automation Systems (BAS) via RS-485 Modbus or the Nexa® platform via Wi-Fi.

It is critical to note that an add-on connection kit is required to activate the flood sensor; without it, the sensor is passive and will not communicate. The flood sensor does not replace the need for proper drainage or compliance with installation and maintenance instructions. Always read all installation instructions and safety information before installation, and inquire with local governing authorities for installation requirements.

Specifications

General

  • Product Type: Reduced Pressure Zone Detector Assembly (Type II)
  • Size: 4 inch
  • Lead Free: Yes (wetted surface < 0.25% lead by weight)
  • Detector Bypass: Metered Bypass (CFM)
  • Flood Sensor: Integrated with SentryPlus Alert® technology

Materials

  • Main Valve Body: Ductile iron Grade 65-45-12
  • Relief Valve Body: Ductile iron Grade 65-45-12
  • Coating: ArmorTek® powder coating (internal and external)
  • Shutoff Valves: OSY Resilient Wedge Gate Valve
  • Check Seats: Stainless steel
  • Relief Valve Seat: Stainless steel
  • Disc Holder: Stainless steel
  • Elastomer Disc: Silicone
  • Spring: Stainless steel
  • Clamp: AWWA C606

Pressure & Temperature

  • Maximum Working Pressure: 175 psi
  • Minimum Working Pressure: 20 psi
  • Hydrostatic Test Pressure: 350 psi
  • Hydrostatic Safety Pressure: 700 psi
  • Temperature Range: 33°F - 140°F (0.5°C - 60°C)

Certificates & Approvals

  • FCCCHR-USC Approved
  • 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

FAQs

What is the primary purpose of the FEBCO 4 inch LF886V backflow preventer?

This reduced pressure zone detector assembly is designed to protect potable water systems from contamination due to backpressure and backsiphonage in high hazard/toxic applications, aligning with local water utility codes.

What materials are used for the main components and how is corrosion addressed?

The main valve and relief valve bodies are made of ductile iron. They feature ArmorTek® powder coating, a patented three-part advanced epoxy system, which significantly reduces microbial-induced corrosion (MIC) and protects exposed metal surfaces.

Does this assembly include a flood sensor, and how is it activated?

Yes, it includes an integrated flood sensor with SentryPlus Alert® technology to detect excessive water discharge from the relief valve. To activate the sensor for alerts, an add-on connection kit, which is sold separately, is required.

What are the maximum operating pressure and temperature ratings for this unit?

The maximum working pressure for this backflow preventer is 175 psi. It is designed to operate continuously within a temperature range of 33°F to 140°F (0.5°C to 60°C).

Are shutoff valves included with this backflow preventer?

Yes, this assembly comes fitted with domestic OS&Y (Outside Stem and Yoke) resilient wedge gate shutoff valves, which are UL Classified and FM Approved.

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