2 1/2 LF009-NRS-FS

Item Number: F122612
1 2
$7,853.46
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts
  • Size: 2 1/2 inch
  • Body Material: Cast Iron
  • Lead Free: Yes (less than 0.25% lead content)
  • Corrosion Protection: ArmorTek® coating technology
  • Flood Detection: SentryPlus Alert® flood sensor included
  • Shutoff Valves: Non-rising Stem (NRS) gate valves
  • Maximum Operating Pressure: 175 psi
  • Certifications: ASSE No. 1013, AWWA C511, CSA B64.4

Description

The Watts LF009-NRS-FS is a 2 1/2 inch Lead Free Reduced Pressure Zone (RPZ) backflow preventer assembly designed to protect potable water supplies from contamination due to backsiphonage and backpressure. It features a durable cast iron body with ArmorTek® anti-corrosion coating and non-rising stem (NRS) resilient seated gate valves. An integrated SentryPlus Alert® flood sensor detects excessive relief valve discharge, with activation capabilities through separate add-on connection kits for BMS or cellular communication. This assembly ensures compliance with national plumbing codes for health hazard cross-connection control. Item number F122612.

Help Me Connect

Flood Sensor Connectivity

  • This Watts LF009-NRS-FS backflow preventer includes a SentryPlus Alert® flood sensor that detects excessive discharge from the relief valve.
  • To activate its advanced flood alert capabilities and relay notifications, an add-on sensor connection kit is required and sold separately.
  • Connection kit options are available for compatibility with Building Management Systems (BMS), cellular communication, or the Sensor Control Monitor, which enables integration with Building Automation Systems (BAS) via RS-485 Modbus or the Nexa® platform through Wi-Fi.
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Additional Details

This 2 1/2 inch Lead Free Reduced Pressure Zone (RPZ) backflow preventer assembly, Series LF009-NRS-FS, is engineered to safeguard potable water supplies from pollution caused by backsiphonage and backpressure. It is ideal for continuous pressure piping applications and for protection at cross-connections identified as health hazards.

Construction & Durability

  • Features a robust cast iron body construction for sizes 2 1/2" - 3".
  • Utilizes ArmorTek®, a patented three-part advanced epoxy coating system, applied to internal and external surfaces (for 2 1/2" - 3" models) to resist microbial-induced corrosion (MIC) and protect exposed metal substrate.
  • Designed with Lead Free* construction, meaning the wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight.

Valves & Checks

  • Equipped with two in-line, independent check valves with captured springs and replaceable check seats.
  • Includes an internal relief valve for reduced installation clearances.
  • Features non-rising stem (NRS) resilient seated gate valves for reliable shutoff.
  • Furnished with resilient seated test cocks.

Maintenance

  • Designed with a single access cover and modular check construction for ease of maintenance.
  • Provides top entry to all internals for immediate accessibility.
  • Captured springs ensure safe maintenance procedures.
  • Replaceable seats allow for economical repair.

Flood Detection & Alerts

  • Includes a flood sensor with SentryPlus Alert® technology on the relief valve, designed to detect excessive water discharges.
  • When paired with an add-on sensor connection kit (sold separately), the flood sensor activates to relay alerts for potential flooding events.
  • Compatible with BMS, cellular communication, and the Sensor Control Monitor for integration with BAS via RS-485 Modbus or the Nexa® platform through Wi-Fi.

Specifications

  • Product Type: Reduced Pressure Zone (RPZ) Backflow Preventer Assembly
  • Model Series: LF009-NRS-FS
  • Size: 2 1/2 inch
  • Body Material: Cast Iron
  • Coating: ArmorTek® (3-part advanced epoxy system)
  • Lead Free: Yes
  • Shutoff Valves: Non-rising Stem (NRS) Resilient Seated Gate Valves
  • Test Cocks: Resilient Seated
  • Flood Detection: SentryPlus Alert® Flood Sensor included

Performance

  • Maximum Supply Pressure: 175 psi (12.1 bar)
  • Continuous Water Temperature: 110°F (43°C)
  • Intermittent Water Temperature: 140°F (60°C)

Certificates & Approvals

  • USC
  • ASSE No. 1013
  • AWWA C511
  • CSA B64.4
  • IAPMO File No. 1563
  • Approved by the Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California

FAQs

What is a Reduced Pressure Zone (RPZ) backflow preventer assembly?

An RPZ backflow preventer assembly is a device designed to protect potable water supplies from contamination. It prevents polluted water from flowing back into the clean water system due to backsiphonage or backpressure, using two independent check valves and a relief valve.

Does this product meet Lead Free standards?

Yes, the Watts LF009-NRS-FS assembly is constructed with Lead Free materials. This means the wetted surfaces of the product, which come into contact with consumable water, contain less than 0.25% lead by weight.

How does the SentryPlus Alert® flood sensor work, and what is required to activate it?

The SentryPlus Alert® flood sensor on the relief valve detects excessive water discharge, indicating a potential issue. To activate its alert features, an add-on sensor connection kit (sold separately) is required. This kit enables communication via BMS, cellular, or Wi-Fi through platforms like Nexa®.

What is ArmorTek® coating, and why is it important?

ArmorTek® is a patented three-part advanced epoxy coating system applied to the internal and external cast iron surfaces of the assembly. It is crucial for resisting microbial-induced corrosion (MIC) and protecting the exposed metal substrate, enhancing the product's durability and lifespan.

What are the maximum operating pressure and temperature ratings for this assembly?

This 2 1/2 inch backflow preventer assembly is suitable for supply pressures up to 175 psi (12.1 bar). It can handle continuous water temperatures up to 110°F (43°C) and intermittent temperatures up to 140°F (60°C).