10 LF909M1-NRS-FS

Item Number: 88009320
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$63,186.46
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts
  • Reduced Pressure Zone Backflow Preventer
  • Size: 10 inch
  • Lead Free* construction
  • ArmorTek® coating resists corrosion
  • Flood sensor with SentryPlus Alert® technology
  • Non-rising stem (NRS) resilient seated gate valves
  • Maximum Working Pressure: 175 PSI
  • Approved to AWWA C511-92 and CSA B64.4

Description

This 10 inch Lead Free Reduced Pressure Zone (RPZ) backflow preventer assembly (Series LF909) safeguards potable water supplies from pollution caused by backsiphonage or backpressure. Designed for health hazard cross-connections and continuous pressure applications, it features robust cast iron construction with an advanced ArmorTek® coating to resist corrosion. The assembly includes non-rising stem (NRS) resilient seated gate valves, replaceable stainless steel internal parts, and a unique air-in/water-out relief valve design for high discharge capacity. A built-in flood sensor with SentryPlus Alert® technology provides early warning for excessive water discharge, helping prevent potential flooding and costly damage. Maximum operating pressure is 175 PSI. Item number 88009320.

Help Me Connect

Flood Sensor Connectivity

This LF909 Reduced Pressure Zone Assembly includes a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve. To activate the flood sensor's communication features and relay alerts, an add-on connection kit is required. Without this kit, the sensor functions as a passive component with no communication to external devices.

Optional connection kits allow the flood sensor to integrate with various systems, including:

  • Building Management Systems (BMS) for facility personnel notification.
  • Cellular Communication for remote alerts.
  • The Sensor Control Monitor for integration with BAS via RS-485 Modbus or the Nexa® platform through Wi-Fi connectivity.
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Additional Details

This 10 inch Lead Free Reduced Pressure Zone (RPZ) assembly is designed to provide cross-connection control protection of the potable water supply, preventing reverse flow of polluted water due to backsiphonage and backpressure. It is ideal for continuous pressure piping applications and at cross-connections identified as health hazards and from other contaminants found at the service line entrance.

Key Features

  • Features Lead Free* construction to comply with installation requirements.
  • Body components are coated with ArmorTek®, a patented three-part advanced epoxy system engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal substrate.
  • Includes a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve, providing notification for potential flooding events when paired with an add-on connection kit.
  • Exclusive air-in/water-out relief valve design provides high capacity discharge performance during emergency conditions of combined backsiphonage and backpressure with both checks fouled.
  • Equipped with non-rising stem (NRS) resilient seated gate valves for reliable shutoff.
  • Contains replaceable seats and stainless steel internal parts for ease of maintenance.
  • Features captured spring check assemblies and fused epoxy coated and lined checks.
  • A field reversible relief valve design provides maximum capacity during emergency conditions.

An add-on connection kit is required to activate the flood sensor's communication features. Without the connection kit, the sensor is a passive component with no external communication.

Specifications

  • Series: LF909
  • Size: 10 inch
  • Shutoff Type: Non-Rising Stem (NRS) Resilient Seated Gate Valves
  • Body Material: Cast Iron
  • Coating: ArmorTek® Powder Coating, 3-Part Advanced Epoxy System
  • Seat Material: Stainless Steel
  • Trim Material: Stainless Steel
  • Relief Valve Body: Cast Iron
  • Test Cock Material: Lead Free* Copper Silicon

Performance Data

  • Temperature Range: 33°F to 110°F (0.5°C to 43°C) Continuous, 140°F (60°C) Intermittent
  • Maximum Working Pressure: 175 PSI (12.06 bar)

Certificates & Approvals

  • AWWA C511-92
  • CSA B64.4
  • IAPMO PS 31
  • SBCCI (Standard Plumbing Code)
  • USC Manual for Cross-Connection Control, 8th Edition
  • UL Listed (OSY)
  • FM Approved
  • NSF Approved

FAQs

What is the primary function of the 10 inch LF909 Reduced Pressure Zone Assembly?

The primary function of this 10 inch Lead Free RPZ assembly is to prevent the reverse flow of polluted water from entering the potable water supply due to backsiphonage and backpressure. It is used in continuous pressure piping applications and for health hazard cross-connections.

What is ArmorTek® coating and why is it important for this backflow preventer?

ArmorTek® is a patented three-part advanced epoxy system that coats the iron components of the backflow preventer. It is engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal substrates, enhancing the durability and lifespan of the assembly.

How does the flood sensor feature work on the LF909 assembly?

The LF909 includes a flood sensor with SentryPlus Alert® technology designed to detect excessive water discharges from the relief valve. When paired with an add-on connection kit, the sensor relays alerts to facility personnel for corrective action, helping to prevent flooding and damage.

What is the maximum operating pressure for this 10 inch backflow preventer?

The maximum operating pressure for the 10 inch LF909 Reduced Pressure Zone Assembly is 175 PSI (12.06 bar).

What certifications and approvals does the LF909 assembly have?

The LF909 assembly is approved to AWWA C511-92, CSA B64.4, IAPMO PS 31, SBCCI, USC Manual for Cross-Connection Control 8th Edition, UL Listed (OSY), FM Approved, and NSF Approved.

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