4 LF886-W-LG-GPM-FS

Item Number: F8007394
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$10,083.75
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Size: 4 inch
  • Weight: 172.0 lb
  • Product Type: Reduced Pressure Detector Backflow Preventer
  • Flood Sensor: SentryPlus Alert® technology
  • Body Material: Ductile Iron with ArmorTek® coating
  • Check & Relief Valve Seats: Stainless Steel
  • Bypass Meter: Gallons Per Minute (GPM)
  • Lay Length: Competitor N-Pattern Drop-in Replacement
  • Shutoff Valves: Not included

Description

This 4 inch FEBCO MasterSeries LF886W Reduced Pressure Detector Backflow Preventer Assembly provides crucial protection against high hazard backpressure and backsiphonage in potable water systems. Featuring a ductile iron body with corrosion-resistant ArmorTek® coating, stainless steel check components, and a stainless steel relief valve seat, it offers enhanced durability and performance. An integrated SentryPlus Alert® flood sensor detects excessive water discharge. Designed for easy installation, this assembly offers a longer lay-length for drop-in replacement of competitor’s N-pattern valves and includes a gallons per minute (GPM) metered bypass. Item number F8007394.

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Connections & Compatibility

This 4 inch MasterSeries backflow preventer is designed with a longer lay-length specifically for drop-in replacement of competitor’s N-pattern valves. It connects to piping compliant with ASME B16.1 Class 125 & AWWA Class D Flange for end connections.

The integrated SentryPlus Alert® flood sensor can be extended for remote monitoring by using an add-on sensor connection kit (sold separately). This kit allows integration with Building Automation Systems (BAS) via RS-485 Modbus or the Nexa® platform through Wi-Fi connectivity, and can also provide alerts via cellular communication.

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Additional Details

The 4 inch FEBCO MasterSeries LF886W Reduced Pressure Zone Detector Backflow Preventer Assembly is designed to protect potable water systems from high hazard (toxic) fluids due to backpressure and backsiphonage, especially in industrial installations.

This valve features a longer lay-length for drop-in replacement of competitor’s N-pattern valves and includes a gallons per minute (GPM) metered bypass for monitoring.

Key Features

  • Equipped with SentryPlus Alert® flood sensor to detect excessive water discharge from the relief valve.
  • Includes an add-on sensor connection kit for remote flood monitoring and maintenance alerts.
  • ArmorTek® powder coating applied to internal and external ductile iron surfaces for enhanced corrosion protection.
  • Features stainless steel check components and a stainless steel relief valve seat for maximum performance and extended valve life.
  • Consists of two independently acting, approved clapper style check modules with replaceable seats and disc rubbers.
  • Designed for drop-in replacement of competitor's N-pattern valves with a longer lay-length.
  • Servicing of check modules does not require special tools.
  • Ball valve test cocks included.
  • This assembly is supplied without shutoff valves.

Specifications

General

  • Product Type: Reduced Pressure Detector Backflow Preventer Assembly (Type II)
  • Size: 4 inch
  • Model: LF886W
  • Lay Length: Competitor N-Pattern Drop-in Replacement
  • Bypass Meter: Gallons Per Minute (GPM)
  • Flood Sensor: SentryPlus Alert®
  • Shutoff Valves: Not included

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 surfaces)
  • 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

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

FAQs

What is the primary use of the FEBCO MasterSeries LF886W backflow preventer?

The primary use of this backflow preventer is to protect potable water systems from contamination due to backpressure and backsiphonage, specifically for high hazard (toxic) applications in industrial settings.

Does this backflow preventer include shutoff valves?

No, this particular LF886W assembly is supplied without shutoff valves. The product name "LG" indicates "Less Shutoff Valves."

What is the purpose of the SentryPlus Alert® flood sensor?

The SentryPlus Alert® flood sensor is integrated into the relief valve assembly to detect any excessive or continuous water discharge, alerting users to potential flooding events. It can be connected to remote monitoring systems for notifications.

What materials are used for the main body and internal components of this assembly?

The main valve body and relief valve body are made from ductile iron Grade 65-45-12 with ArmorTek® powder coating. Key internal components like check seats, relief valve seats, and springs are made of stainless steel, while elastomer discs are silicone.

Is this backflow preventer compatible with existing installations?

Yes, this 4 inch LF886W assembly features a longer lay-length specifically designed for drop-in replacement of competitor’s N-pattern reduced pressure zone valves, making it compatible with many existing setups.

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