1 1/4 LF860-QT-RP-FS

Item Number: F683003
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$1,933.45
Limited Stock (1)
Estimated transit time: 2 to 5 Business Days Eligible for Express Shipping

Brand - Febco
  • Nominal Size: 1 1/4 inch
  • Lead Free* cast copper silicon alloy body
  • Maximum Working Pressure: 175 psi
  • Temperature Range: 32°F to 140°F
  • Integrated flood sensor with SentryPlus Alert® technology
  • Prevents backsiphonage and backpressure of toxic fluids
  • Inline serviceable design for easy maintenance
  • Includes threaded quarter turn ball valves and test cocks

Description

The FEBCO 1 1/4 inch Lead Free Reduced Pressure Zone Backflow Preventer Assembly (LF860-QT-RP-FS) is designed to protect potable water systems from high hazard (toxic) fluid contamination due to backsiphonage or backpressure. This assembly features lead free cast copper silicon alloy construction and includes a SentryPlus Alert® flood sensor to detect relief valve discharge. It is suitable for industrial, hospital, and irrigation applications. With quarter turn shutoff ball valves and modular components, it offers easy installation and inline maintenance. Approved to ASSE 1013, CSA B64.4, and NSF 61-G standards. Item number F683003.

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Installation & Connectivity

  • This assembly features NPT ANSI/ASME B1.20.1 end connections for easy installation into existing plumbing systems.
  • The integrated flood sensor requires an add-on sensor connection kit (sold separately) for activation and remote alert functionality.
  • Connection kit options include compatibility with BMS, cellular communication, or the Sensor Control Monitor for integration with BAS via RS-485 Modbus or the Nexa® platform via Wi-Fi.
  • The assembly includes threaded quarter turn ball valves for shutoff and four top-mounted test cocks for ease of testing.
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Additional Details

This 1 1/4 inch lead free reduced pressure zone backflow preventer assembly prevents the reverse flow of high hazard (toxic) fluids from entering into the potable water supply due to backsiphonage or backpressure.

It is designed for use in a variety of water services requiring maximum protection, including industrial plants, hospitals, morgues, mortuaries, chemical plants, irrigation systems, boiler feed, and water lines.

Key Features

  • Features a flood sensor with SentryPlus Alert® technology to detect continuous discharge from the relief valve.
  • An add-on connection kit (sold separately) is required to activate the flood sensor for remote alerts.
  • Modular relief valve and check valves for easy inline maintenance.
  • Includes quarter turn shutoff ball valves and top-mounted test cocks.
  • Constructed with a Lead Free* cast copper silicon alloy body for reduced lead content.

The flood sensor requires an add-on connection kit to be fully activated for communication and does not replace the need for proper drainage or compliance with installation codes.

Specifications

General

  • Product Type: Reduced Pressure Zone Backflow Preventer Assembly
  • Nominal Size: 1 1/4 inch
  • Lead Free Construction: Yes (less than 0.25% lead by weight)
  • Flood Sensor: Integrated (SentryPlus Alert® technology)

Performance

  • 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)
  • Pressure Drop (First Check): Approximately 7.0 psid (no flow)
  • Relief Valve Differential Pressure: Approximately 3.0 psid (opens when differential is reduced)

Materials

  • Valve Body: Lead Free Cast Copper Silicon Alloy
  • Elastomers: Silicone
  • Springs: Stainless Steel
  • Test Cocks: Lead Free Cast Copper Silicon Alloy
  • Shutoff Valves: Lead Free Cast Copper Silicon Alloy

Connections

  • End Connections: NPT ANSI/ASME B1.20.1
  • Shutoff Valves: Quarter Turn Ball Valves
  • Test Cocks: 4

Dimensions & Weight

  • Overall Length (A): 15 7/8 inches (403 mm)
  • Width (B): 3 inches (76 mm)
  • Height (C): 2 1/2 inches (64 mm)
  • Max Height (D): 4 1/4 inches (108 mm)
  • Relief Valve to End (E): 7 5/8 inches (194 mm)
  • Weight: 20.3 lbs (9.2 kg)

Certificates & Approvals

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

FAQs

What type of contamination does this backflow preventer protect against?

This device protects potable water systems against cross-connection contamination from high hazard (toxic) fluids, preventing both backsiphonage and backpressure conditions.

Is the flood sensor functional right out of the box for remote alerts?

No, the integrated flood sensor with SentryPlus Alert® technology requires an add-on sensor connection kit (sold separately) to be fully activated for communication and remote alerts. Without the kit, the sensor is a passive component.

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

The main valve body and shutoff valves are constructed from Lead Free* cast copper silicon alloy. Elastomers are silicone, and springs are stainless steel.

What are the operating pressure and temperature limits for this assembly?

This backflow preventer has a maximum working pressure of 175 psi (12.1 bar) and an operating temperature range of 32°F to 140°F (0°C to 60°C).

Where is this backflow preventer typically installed?

It is used in water services for industrial plants, hospitals, morgues, mortuaries, chemical plants, irrigation systems, boiler feed, and other installations requiring maximum protection for potable water.

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