4 LF886-W-DOSY-LM-FS

Item Number: F8007392
1 1
$16,061.25
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • 4 inch Reduced Pressure Zone Detector Assembly (RPDA)
  • Weight: 342.0 lb
  • Lead Free construction (less than 0.25% lead by weight)
  • Ductile iron body with ArmorTek® corrosion-resistant coating
  • Stainless steel relief valve seat and check components for durability
  • Equipped with SentryPlus Alert® flood sensor
  • N-pattern lay length for competitor drop-in replacement
  • Maximum Working Pressure: 175 psi
  • Temperature Range: 33°F - 140°F

Description

The 4 inch FEBCO MasterSeries LF886W Reduced Pressure Zone Detector Assembly safeguards potable water systems from high hazard backpressure and backsiphonage. Featuring a durable ductile iron body with ArmorTek® coating and stainless steel internal components, this valve is designed for longevity. It includes a SentryPlus Alert® flood sensor to detect excessive relief valve discharge and can relay alerts with an add-on connection kit. This N-pattern assembly with domestic OSY shutoff valves offers a longer lay length for drop-in replacement of competitor units, ideal for industrial and commercial installations requiring lead-free compliance. Item F8007392.

Help Me Connect

Compatibility & Installation

  • The FEBCO MasterSeries LF886W Reduced Pressure Zone Detector Assembly is engineered for drop-in replacement of competitor's N-pattern valves due to its longer gate-to-gate length.
  • This assembly is suitable for installation on potable water supply lines at points of cross-connection to protect against backpressure and backsiphonage conditions.

Flood Sensor Activation

  • To activate the integrated SentryPlus Alert® flood sensor, an add-on connection kit is required.
  • Without this kit, the flood sensor remains a passive component and will not communicate.
  • Connection kit options include interfaces for BMS (Building Management Systems), cellular communication, or integration with BAS (Building Automation Systems) via RS-485 Modbus or the Nexa® platform through Wi-Fi.
View full details

Additional Details

This 4 inch lead free MasterSeries® reduced pressure detector backflow preventer assembly protects potable water systems from high hazard (toxic) fluids in industrial installations and applications by guarding against backpressure and backsiphonage conditions.

This valve features a longer gate-to-gate length, making it a direct drop-in replacement for competitor’s N-pattern valves. The assembly includes a ductile iron body with a SentryPlus Alert® flood sensor, domestic OSY shutoff valves, replaceable stainless steel check seats, a bypass, and ball valve test cocks. Improved with a stainless-steel relief valve seat, these rugged assemblies offer enhanced dependability and extended valve life.

Flood Detection

  • Equipped with a SentryPlus Alert® flood sensor to detect excessive water discharges from the relief valve.
  • Relays alerts for potential flooding events when paired with an add-on connection kit.
  • Connection kit options include BMS, cellular communication, and the Sensor Control Monitor for integration with BAS via RS-485 Modbus or the Nexa® platform through Wi-Fi.

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. Watts® is not responsible for the failure of alerts due to connectivity issues, power outages, or improper installation.

Main Valve Features

  • Stainless steel relief valve seat and stainless steel check components for maximum performance and durability.
  • Longer gate-to-gate length for drop-in replacement of other valves.
  • Inline serviceable assembly; no special tools required.
  • Captured modular spring assembly.
  • Reversible and replaceable discs.
  • Field replaceable seats.
  • Ductile iron valve body design with 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 inch check assembly; no special tools required for servicing.
  • Field replaceable seat and disc.
  • Detects potential underground water leaks.
  • Detects unauthorized water usage.

Specifications

  • Product Type: Reduced Pressure Zone Detector Assembly
  • Model: LF886W
  • Nominal Size: 4 inch
  • Lay Length: N-Pattern (Competitor Drop-in Replacement)
  • Main Valve Body Material: Ductile iron Grade 65-45-12
  • Relief Valve Body Material: Ductile iron Grade 65-45-12
  • Coating: ArmorTek® powder coating (internal and external surfaces)
  • Shutoff Valves: Domestic OSY resilient wedge gate valve (UL Classified, 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
  • Bypass Water Meter: Included (LM configuration)
  • Flood Sensor: SentryPlus Alert® technology

Performance

  • 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
  • Lead Content: Wetted surface contains less than 0.25% lead by weight

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
  • End Connections: Compliant to ASME B16.1 Class 125 & AWWA Class D Flange
  • CSA B64.4

FAQs

What is the primary function of the FEBCO LF886W Reduced Pressure Zone Detector Assembly?

This assembly is designed to protect potable water systems from contamination due to backpressure and backsiphonage conditions, specifically for high hazard (toxic) fluids in industrial and commercial applications.

Is this backflow preventer assembly lead-free?

Yes, the wetted surfaces of this product that come into contact with consumable water contain less than 0.25% lead by weight, complying with lead-free installation requirements.

How does the SentryPlus Alert® flood sensor work?

The flood sensor detects excessive water discharges from the relief valve. When an add-on connection kit is installed, the sensor becomes active and can relay alerts via BMS, cellular communication, or Wi-Fi through the Sensor Control Monitor.

Can this backflow preventer replace an existing unit from another brand?

Yes, the FEBCO MasterSeries LF886W/WZ assembly is designed with a longer gate-to-gate length for direct drop-in replacement of competitor’s N-pattern valves, simplifying installation.

What kind of shutoff valves are included with this assembly?

This assembly comes with domestic OSY (Outside Stem & Yoke) resilient seated shutoff valves, which are UL Classified and FM Approved for reliable performance.

Related Products

1 2