3/4 LF825Y-QT-RP-FS

Item Number: F683006
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$1,098.66
Limited Stock (5)
Estimated transit time: 2 to 5 Business Days Eligible for Express Shipping

Brand - Febco
  • Size: 3/4 inch
  • Weight: 12.38 lb
  • Body Material: Lead Free Cast Copper Silicon Alloy
  • End Connection: NPT ANSI/ASME B1.20.1
  • Maximum Working Pressure: 175 psi
  • Temperature Range: 32°F to 140°F
  • Features: Integrated SentryPlus Alert Flood Sensor
  • Shutoff Valves: Quarter Turn Ball Valves
  • Certifications: ASSE 1013, AWWA C511, CSA B64.4, NSF/ANSI 61-G

Description

This 3/4 inch FEBCO Lead Free Reduced Pressure Zone Backflow Preventer (LF825Y-QT-RP-FS) safeguards potable water from high hazard contaminants due to backpressure or backsiphonage. Constructed with a lead free cast copper silicon alloy Y-pattern body, it features quarter-turn shutoff valves, two spring-loaded check valves, and a hydraulically dependent differential relief valve. The assembly includes an integrated SentryPlus Alert flood sensor for immediate discharge detection. Rated for 175 psi and 32°F to 140°F, it meets ASSE 1013, AWWA C511, CSA B64.4, and NSF/ANSI 61-G standards, making it suitable for industrial, hospital, and irrigation systems.

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Connections and Installation

This 3/4 inch backflow preventer assembly features threaded end connections (NPT ANSI/ASME B1.20.1) for secure installation into your plumbing system. It comes with quarter turn ball valves for easy shutoff.

  • Ensure minimum clearance of 12 inches between the relief valve discharge port and the floor or grade.
  • The installation location must allow for positive drainage of any discharge.
  • The assembly should be installed in an area that is easily accessible for routine testing and maintenance.
  • Protect the unit from freezing temperatures to prevent damage.
  • Address any thermal water expansion or water hammer downstream of the backflow preventer to prevent excessive pressure situations.

Always refer to local codes and specific installation requirements. Some local regulations may prohibit vertical installation.

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Additional Details

The FEBCO 3/4 inch Lead Free Bronze Reduced Pressure Zone Backflow Preventer Assembly prevents the reverse flow of high hazard (toxic) fluids into a potable water supply due to backsiphonage or backpressure. This assembly is ideal for water services in industrial plants, hospitals, and irrigation systems, providing maximum protection for water lines and other installations.

It features a Y pattern body with quarter turn shutoff valves and an integrated flood sensor with SentryPlus Alert technology to detect continuous discharge from the relief valve.

Key Features

  • Lead Free construction for safe potable water applications.
  • Integrated SentryPlus Alert flood sensor detects continuous relief valve discharge.
  • Modular relief valve and check valves for easy maintenance without removing the valve body from the line.
  • Quarter turn ball valves for convenient shutoff.
  • Two independently operating spring loaded Y pattern check valves and one hydraulically dependent differential relief valve.
  • Designed to automatically reduce pressure in the zone between check valves to at least 5 psi lower than inlet pressure.

Sensor Connectivity

  • Add-on sensor connection kit available to extend flood monitoring and deliver maintenance alerts.
  • Compatible with BMS, cellular communication, or the Sensor Control Monitor for integration with BAS via RS-485 Modbus or the Nexa platform via Wi-Fi.

Installation Notice: Refer to local codes for specific installation requirements. Some codes may prohibit vertical installation.

Specifications

  • Product Type: Reduced Pressure Zone Backflow Preventer
  • Nominal Pipe Size: 3/4 inch
  • Body Pattern: Y Pattern
  • End Connection: NPT ANSI/ASME B1.20.1
  • Body Material: Lead Free cast copper silicon alloy
  • Relief Valve Body Material: Lead Free cast copper silicon alloy
  • Elastomers: Nitrile seat discs
  • Diaphragms: Nitrile, fabric reinforced
  • Springs: Stainless steel
  • Shutoff Valves: Quarter turn ball valves
  • Maximum Working Pressure: 175 psi (12.1 bar)
  • Hydrostatic Test Pressure: 350 psi (24.1 bar)
  • Temperature Range: 32°F to 140°F (0°C to 60°C)

Certificates & Approvals

  • ASSE Standard: 1013
  • AWWA Standard: C511
  • CSA Standard: B64.4
  • NSF Certified: NSF/ANSI 61-G
  • Approved by the Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California

FAQs

What is the primary use of this backflow preventer?

Its primary use is to prevent the reverse flow of high hazard (toxic) fluids into the potable water supply, protecting against contamination from backsiphonage or backpressure in systems like industrial plants, hospitals, or irrigation.

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 early warning of potential flooding events or system malfunctions.

What materials are used in the construction of this backflow preventer?

The main valve body and relief valve body are made from Lead Free cast copper silicon alloy. Elastomers are Nitrile seat discs, diaphragms are Nitrile fabric reinforced, and springs are stainless steel.

What are the key certifications and approvals for this product?

This backflow preventer is approved to ASSE Standard 1013, AWWA C511, CSA B64.4, and is NSF Certified to NSF/ANSI 61-G, ensuring compliance with strict safety and performance standards.

Can this backflow preventer be serviced in-line?

Yes, it features modular relief valve and check valves, allowing components to be serviced without needing to remove the entire valve body from the pipeline, which simplifies maintenance.

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