4 LF880-W-DOSY-FS

Item Number: F8007365
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$14,086.50
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Size: 4 inch
  • Weight: 455.0 lb
  • Pattern: N-Pattern
  • Lead Free construction
  • Body Material: Ductile iron with ArmorTek coating
  • Shutoff Valves: Domestic OSY
  • Max. Working Pressure: 175 psi
  • Temperature Range: 33°F - 140°F
  • Features SentryPlus Alert flood sensor

Description

The 4 inch FEBCO MasterSeries LF880W/WZ Reduced Pressure Zone Backflow Preventer Assembly is designed to protect potable water systems from high hazard (toxic) fluids caused by backpressure and backsiphonage. This lead-free unit features a ductile iron body with ArmorTek coating for corrosion resistance and domestic OSY shutoff valves. It offers a competitor N-pattern drop-in replacement lay length for easy installation. Key features include a stainless steel relief valve seat and check components for durability, plus an integrated flood sensor with SentryPlus Alert technology for continuous discharge detection and potential flooding alerts when paired with a connection kit. This assembly is suitable for industrial and commercial water service applications.

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Installation

  • This assembly is designed for drop-in replacement of competitor N-pattern valves, featuring a longer lay-length for ease of retrofit.
  • It supports both vertical up or vertical down N-pattern installation.

Flood Sensor Connectivity

  • The integrated flood sensor requires an add-on connection kit to be activated for alert functionality.
  • Connection kit options include integration with Building Management Systems (BMS), cellular communication, or the Sensor Control Monitor which enables data transmission to BAS via RS-485 Modbus or the Nexa platform via Wi-Fi.

End Connections

  • The end connections are compliant to ASME B16.1 Class 125 and AWWA Class D Flange standards.
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Additional Details

This 4 inch lead free MasterSeries® configurable reduced pressure zone backflow preventer assembly helps protect potable water supplies from high hazard (toxic) fluids caused by backpressure and backsiphonage, commonly found in industrial installations and other applications. This valve features a longer lay-length for drop-in replacement of competitor’s N-pattern valves.

Key Features

  • Flood sensor with SentryPlus Alert technology to detect continuous discharge from the relief valve.
  • An add-on sensor connection kit is available to extend flood monitoring and activate the sensor for alerts.
  • The sensor integrates with the Sensor Control Monitor to deliver maintenance alerts to BAS via RS-485 Modbus or the Nexa platform by Wi-Fi connectivity.
  • Designed for competitor N-pattern drop-in replacement lay length.
  • Ductile iron body epoxy coated using ArmorTek corrosion resistant technology.
  • Combines stainless steel relief valve seat and stainless steel check components for maximum performance and durability.
  • Includes domestic OSY shutoffs.
  • Features a field reversible relief valve.
  • Utilizes stainless steel springs.
  • Longer gate-to-gate length for drop-in replacement of longer valves.
  • Inline serviceable assembly; no special tools required.
  • Supports vertical up or vertical down N-pattern installation.
  • Features a captured modular spring assembly and clapper check assembly.
  • Includes reversible and replaceable discs and field replaceable seats.
  • Has a modular and repairable pressure differential relief valve.

Important Safety Information

  • 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.

Specifications

  • Product Type: Reduced Pressure Zone (RPZ) Backflow Preventer
  • Size: 4 inch
  • Pattern: N-Pattern

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

Certificates & Approvals

  • Approved by: Foundation for Cross-Connection Control and Hydraulic Research at The University of Southern California (FCCCHR USC)
  • Listed: ASSE 1013
  • Classified: UL (US & Canada)
  • Approved: FM
  • Listed: IAPMO/CUPC
  • Compliant: AWWA Standard C511
  • End Connections: Compliant to ASME B16.1 Class 125 & AWWA Class D Flange
  • Certified: CSA B64.4
  • Certified: NSF/ANSI 61-G

FAQs

What is the primary use of this backflow preventer?

This 4 inch MasterSeries LF880W/WZ Reduced Pressure Zone Backflow Preventer is designed to protect potable water supplies from high hazard (toxic) fluids that could enter the system due to backpressure or backsiphonage.

Does this backflow preventer feature lead-free construction?

Yes, this assembly features lead-free construction to comply with low lead installation requirements and ensure the safety of potable water systems.

What is the purpose of the integrated flood sensor?

The integrated flood sensor with SentryPlus Alert technology detects continuous discharge from the relief valve, providing an early warning for potential flooding events when connected to an add-on kit.

Are special tools required to service this assembly?

No, this assembly is designed to be inline serviceable, meaning that no special tools are required for maintenance of the pressure differential relief valve and check modules.

What is the maximum operating pressure and temperature range for this unit?

The maximum working pressure for this backflow preventer is 175 psi (12.1 bar), and it can operate continuously within a temperature range of 33°F to 140°F (0.5°C to 60°C).

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