2 LF909M1-QT-FS

Item Number: F391012
1 1
$5,987.05
Limited Stock (4)
Estimated transit time: 2 to 5 Business Days Eligible for Express Shipping

Brand - Watts
  • Nominal Size: 2 inch
  • Connection Type: Male NPT Threaded
  • Body Material: Lead Free* Cast Copper Silicon Alloy
  • Maximum Working Pressure: 175 PSI
  • Temperature Range: 33°F - 140°F Continuous
  • Features Flood Sensor with SentryPlus Alert® Technology
  • Modular, compact design for easy installation
  • Approved to ASSE 1013, AWWA C-511-92, CSA B64.4, NSF

Description

This 2 inch WATTS LF909M1-QT-FS Lead Free Reduced Pressure Zone Backflow Preventer Assembly provides crucial protection against hazardous cross-connection contamination in potable water systems. Featuring a patented "air-in/water-out" principle for high-capacity relief and a flood sensor with SentryPlus Alert® technology, it ensures maximum safety. Constructed from lead-free cast copper silicon alloy with 2 inch male NPT connections, it offers durable, reliable performance up to 175 PSI and temperatures from 33°F to 140°F. The compact design allows for versatile horizontal or vertical installation, making it suitable for various health hazard and containment control applications. Item number F391012.

Help Me Connect

Connections

  • The 2 inch male threaded connections are designed to connect to 2 inch female NPT threads.

Installation Orientation

  • This assembly can be installed in a horizontal or vertical (up or down) orientation.

Flood Sensor Activation

  • To activate the flood sensor's alert features, an add-on connection kit is required. This kit enables compatibility with Building Management Systems (BMS), cellular communication, or the Sensor Control Monitor for integration with BAS via RS-485 Modbus or the Nexa® platform through Wi-Fi.
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Additional Details

The WATTS 2 inch Lead Free Reduced Pressure Zone Backflow Preventer Assembly provides superior cross-connection control to protect potable water supplies from hazardous material contamination due to backsiphonage or backpressure. This assembly is ideal for safeguarding continuous pressure piping applications and health hazard cross-connections.

Its exclusive design incorporates a patented "air-in/water-out" principle, ensuring maximum relief valve discharge during emergency conditions, even with both checks fouled. Equipped with a flood sensor featuring SentryPlus Alert® technology, it detects excessive water discharges from the relief valve, providing alerts when paired with an add-on connection kit.

Features

  • Lead Free* construction to comply with installation requirements.
  • Modular, compact design eases installation.
  • Replaceable seats for easy maintenance.
  • Horizontal or vertical (up or down) installation.
  • No special tools required for servicing.
  • Flood sensor on the relief valve for discharge detection.
  • Flood alerts activated with add-on sensor connection kit, compatible with BMS and cellular communication.
  • Quarter-turn ball valves with lever handles for easy shutoff.
  • Top-mounted test cocks for simplified testing.

Materials

  • Body: Lead Free* cast copper silicon alloy
  • Check Seats: 909 Celcon®
  • Relief Valve Seats: Stainless Steel 909
  • Test Tocks: Lead Free* cast copper silicon alloy

NOTICE: 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. Use of the flood sensor does not replicate 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.

Specifications

  • Product Type: Reduced Pressure Zone Backflow Preventer
  • Nominal Size: 2 inch
  • Connection Type: Male NPT Threaded
  • Body Material: Lead Free* Cast Copper Silicon Alloy
  • Check Seat Material: 909 Celcon®
  • Relief Valve Seat Material: Stainless Steel 909
  • Test Cock Material: Lead Free* Cast Copper Silicon Alloy

Performance

  • Maximum Working Pressure: 175 PSI (12.1 bar)
  • Continuous Temperature Range: 33°F - 140°F (0.5°C - 60°C)
  • Intermittent Temperature Range: 180°F (82°C)

Certificates & Approvals

  • ASSE 1013
  • AWWA C-511-92
  • CSA B64.4
  • FCCCHR of USC Manual Section 10
  • IAPMO (UPC)
  • SBCCI (Standard Plumbing code)
  • Tested and Certified by NSF International (NSF/ANSI 61-G & 372)
  • Listed by IAPMO
  • Listed by SBCCI
  • Approved by Foundation for Cross-Connection Control and Hydraulic Research at USC

FAQs

What is the primary purpose of this backflow preventer assembly?

The primary purpose of the WATTS LF909M1-QT-FS is to protect potable water supplies from contamination by preventing the backflow of hazardous materials due to backsiphonage or backpressure in cross-connection scenarios.

What are the connection types and sizes for this assembly?

This assembly features 2 inch male NPT threaded connections, designed to connect to a 2 inch female NPT pipe or fitting.

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

This backflow preventer has a maximum working pressure of 175 PSI (12.1 bar) and operates continuously in temperatures ranging from 33°F to 140°F (0.5°C to 60°C). It can intermittently handle temperatures up to 180°F (82°C).

How does the flood sensor feature work?

The integrated flood sensor with SentryPlus Alert® technology detects excessive water discharges from the relief valve. To activate its alert capabilities, an add-on connection kit is required, enabling communication via BMS, cellular, or Wi-Fi to facility personnel.

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

The body is constructed from Lead Free* cast copper silicon alloy. The check seats are 909 Celcon®, and the relief valve seats are Stainless Steel 909. The test cocks are also made from Lead Free* cast copper silicon alloy.

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