4 LF880V-DOSY-FS
Item Number: F683136
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Regular price
$14,085.98
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When Will it Ship:
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Estimated transit time: 2 to 5 Business Days
Brand - Febco
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- Size: 4 inch
- Weight: 455.0 lb
- Body Material: Lead Free Ductile Iron
- Coating: ArmorTek® Patented 3-Part Epoxy
- Features: SentryPlus Alert® Flood Sensor
- Relief Valve Seat: Stainless Steel
- Check Components: Stainless Steel
- Shutoffs: Domestic OSY Gate Valves
- Typical Flow Rate (4" Floor Drain Sizing): 170 GPM
Description
Description
This 4 inch lead free FEBCO LF880V reduced pressure zone backflow preventer assembly protects industrial water services from high hazard (toxic) fluids. It features a durable ductile iron body with ArmorTek® epoxy coating for superior corrosion resistance and stainless steel internal components for extended reliability. Integrated SentryPlus Alert® flood sensor technology detects continuous relief valve discharge, offering protection against potential flooding. The assembly supports advanced monitoring through an add-on sensor connection kit, enabling integration with BAS via Modbus or the Nexa® platform over Wi-Fi. It includes domestic OSY gate valves and offers a configurable N-pattern design for versatile installation.
Help Me Connect
Help Me Connect
Installation and Connectivity
- This 4 inch backflow preventer assembly is designed for water services to industrial installations and applications, specifically protecting against high hazard (toxic) fluids.
- The integrated SentryPlus Alert® flood sensor can be enhanced with an add-on sensor connection kit for extended flood monitoring.
- The Sensor Control Monitor enables seamless integration with Building Automation Systems (BAS) via RS‑485 Modbus or allows connectivity to the Nexa® platform through Wi-Fi for smart device monitoring and alerts.
- Its configurable N-Pattern design and field reversible relief valve offer flexibility for various piping configurations.

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Additional Details
This 4 inch lead free MasterSeries® configurable reduced pressure zone backflow preventer assembly is designed to help protect against high hazard (toxic) fluids in water services to industrial installations and applications.
It features domestic outside stem and yoke (OSY) resilient seated gate valves, test cocks, spring loaded check valves, and a pressure differential relief valve, all within an epoxy coated ductile iron body.
Advanced Protection & Durability
- Features a flood sensor with SentryPlus Alert® technology to detect continuous discharge from the relief valve, helping to prevent potential flooding events.
- Includes an add-on sensor connection kit to extend flood monitoring capabilities.
- The Sensor Control Monitor enables integration with smart devices and Building Automation Systems (BAS) via RS‑485 Modbus or the Nexa® platform through Wi-Fi.
- Constructed with a ductile iron body and patented 3-part ArmorTek® epoxy coating system to significantly limit both microbial induced corrosion (MIC) and exposed metal substrate corrosion.
- Combines a stainless-steel relief valve seat and stainless-steel check components for maximum performance, durability, and extended valve life.
- Equipped with stainless steel springs for reliable operation.
- Features a field reversible relief valve for installation flexibility.
Design & Configuration
- Offers a configurable N-Pattern design.
- Lead free construction ensures compliance with relevant standards.
Specifications
General
- Product Type: Reduced Pressure Zone Backflow Preventer Assembly
- Model: LF880V
- Nominal Size: 4 inch
- Body Material: Ductile Iron
- Coating: ArmorTek® Patented 3-Part Epoxy Coating System
- Pattern: N-Pattern
- Lead Free: Yes
Components
- Shutoffs: Domestic Outside Stem and Yoke (OSY) Resilient Seated Gate Valves
- Relief Valve Seat: Stainless Steel
- Check Components: Stainless Steel
- Springs: Stainless Steel
- Relief Valve: Field Reversible
- Flood Sensor: SentryPlus Alert® Technology
- Sensor Integration: RS‑485 Modbus, Nexa® Platform (via Wi-Fi)
Performance
- Typical Flow Rate (4" Floor Drain Sizing): 170 GPM
FAQs
What is the primary purpose of the FEBCO LF880V backflow preventer?
The primary purpose of this 4 inch lead free reduced pressure zone backflow preventer assembly is to protect industrial water services from high hazard (toxic) fluids by preventing backflow contamination.
What materials are used in the construction of this backflow preventer?
This backflow preventer features a lead free ductile iron body with a patented 3-part ArmorTek® epoxy coating for advanced corrosion resistance. It also includes stainless-steel relief valve seats, stainless-steel check components, and stainless steel springs for durability.
How does the SentryPlus Alert® flood sensor work?
The SentryPlus Alert® flood sensor is integrated into the assembly to detect continuous discharge from the relief valve. When paired with an add-on connection kit, it can relay alerts for potential flooding events, protecting the installation site.
Can this backflow preventer be integrated with existing building management systems?
Yes, the Sensor Control Monitor enables integration with Building Automation Systems (BAS) via RS‑485 Modbus. It can also connect to the Nexa® platform through Wi-Fi for smart device monitoring.
What type of shutoff valves are included with this assembly?
This 4 inch LF880V assembly includes domestic outside stem and yoke (OSY) resilient seated gate valves for reliable shutoff.
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