3/4 LF825YA-QT-RP-FS

Item Number: F683011
1 1
$1,422.80
Limited Stock (5)
Estimated transit time: 2 to 5 Business Days Eligible for Express Shipping

Brand - Febco
  • Size: 3/4 inch
  • Lead-Free* Cast Copper Silicon Alloy Body
  • Maximum Working Pressure: 175 PSI
  • Temperature Range: 32°F to 140°F
  • NPT ANSI/ASME B1.20.1 End Connections
  • Flood Sensor with SentryPlus Alert Technology
  • Modular Relief Valve and Check Valves for Easy Maintenance
  • Compact Design for Simplified Installations

Description

The FEBCO 3/4 inch Lead Free Reduced Pressure Zone Backflow Preventer Assembly is designed to prevent the backflow of high-hazard fluids into the potable water supply, protecting against contamination from backsiphonage and backpressure. Featuring a compact, integral design with 3/4 inch NPT threaded connections, it simplifies new and retrofit installations. The assembly includes a lead-free* cast copper silicon alloy body, modular internal components for easy maintenance, and quarter-turn shutoff valves. An integrated flood sensor with SentryPlus Alert technology detects excessive relief valve discharge, offering enhanced monitoring capabilities. It operates up to 175 PSI and within 32°F to 140°F.

Help Me Connect

The FEBCO LF825YA-QT-RP-FS backflow preventer features 3/4 inch NPT ANSI/ASME B1.20.1 threaded end connections, designed for direct compatibility with corresponding threaded piping systems. It includes integral flanged union connections located between the mainline valve body and the ball valve shutoffs to facilitate field removal for maintenance or freeze protection without requiring spool replacement. The integrated flood sensor can be activated by an add-on sensor connection kit, which enables communication through BMS, cellular networks, or Wi-Fi (via RS-485 Modbus or Nexa platform) for advanced monitoring.

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Additional Details

The 3/4 inch FEBCO LF825YA-QT-RP-FS is a lead-free reduced pressure zone backflow preventer assembly designed to prevent the reverse flow of high hazard (toxic) fluids from entering the potable water supply due to backsiphonage or backpressure.

This compact, integral assembly offers an extremely short lay length, providing versatility and simplifying new and retrofit installations, especially in areas with limited space.

Features

  • Low head loss for optimum performance.
  • Flood sensor on relief valve for flood detection.
  • Flood sensor features activated with add-on sensor connection kit, compatible with BMS and cellular communication options.
  • Versatility simplifies new and retrofit installations.
  • Eliminates pipe elbows, nipples, and unions in many installations.
  • Reduces installation time and labor costs.
  • Compact design simplifies retrofits.
  • Integral flanged union connections for assembly removal, allowing for field removal for freeze protection or maintenance without spool replacement.
  • Approved by the Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California.
  • Modular relief valve and check valve internal components for ease of maintenance.
  • Smart, less costly protective enclosures to provide freeze and vandalism protection.
  • Field tested design for reliability and performance.
  • Replaceable seat rings for longer valve life.

Construction

  • Features a lead-free* cast copper silicon alloy body and internal components.
  • Includes threaded quarter-turn ball valves and test cocks.
  • Incorporates spring-loaded Y pattern check valves and one hydraulically dependent differential relief valve.

NOTICE: An add-on connection kit is required to activate the flood sensor. Without the connection kit, the sensor is a passive component that has no communication with any other device.

Specifications

  • Size: 3/4 inch
  • End Connection: NPT ANSI/ASME B1.20.1

Pressure & Temperature

  • 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)

Materials

  • Main Valve Body: Lead Free* cast copper silicon alloy
  • Relief Valve Body: Lead Free* cast copper silicon alloy
  • Elastomers: Nitrile seat discs
  • Diaphragms: Nitrile, fabric reinforced
  • Springs: Stainless steel

Certificates & Approvals

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

FAQs

What is the primary function of the FEBCO LF825YA-QT-RP-FS backflow preventer?

Its primary function is to prevent the reverse flow of high-hazard fluids (such as toxic chemicals) from contaminating the potable water supply due to backsiphonage or backpressure events.

Is this backflow preventer assembly lead-free?

Yes, the assembly features Lead Free* cast copper silicon alloy for its main valve body and relief valve body, complying with reduced lead content requirements.

What are the connection specifications for this model?

This 3/4 inch model features NPT ANSI/ASME B1.20.1 threaded end connections, along with integral flanged unions for convenient assembly removal.

Does the LF825YA-QT-RP-FS include a flood sensor?

Yes, it includes a flood sensor with SentryPlus Alert technology on the relief valve, designed to detect excessive water discharges. An add-on connection kit is required for communication capabilities.

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

The maximum working pressure is 175 PSI (12.1 bar), and it can operate within a temperature range of 32°F to 140°F (0°C to 60°C).

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