3 LF909-NRS NYC-FS

Item Number: 88009405
1 1
$18,850.49
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts
  • Size: 3 inch
  • Weight: 263.0 lb
  • Product Type: Reduced Pressure Zone Backflow Preventer
  • Shutoff Valves: NRS (Non-Rising Stem) Gate Valves
  • Coating: ArmorTek® Advanced Epoxy System
  • Flood Sensor: SentryPlus Alert® Technology
  • Maximum Working Pressure: 175 psi
  • Lead Content: Lead Free*
  • NYC Version: Pre-Drilled 304SS Bolts/Nuts

Description

The Watts 3 inch Series LF909 Lead Free Reduced Pressure Zone Backflow Preventer Assembly is designed for potable water supply protection against backsiphonage and backpressure. Featuring ArmorTek® advanced epoxy coating, this assembly resists corrosion and MIC, ensuring long-term durability. It includes NRS shutoff valves and a SentryPlus Alert® flood sensor to detect excessive relief valve discharge, with alert features activatable via an add-on connection kit. The NYC version comes with pre-drilled 304SS bolts for installation. Maximum working pressure is 175 psi, with a continuous temperature range of 33°F to 110°F.

Help Me Connect

The Watts Series LF909 Reduced Pressure Zone Assembly features NRS (Non-Rising Stem) gate valves for secure shutoff on both the inlet and outlet. This 3-inch assembly includes a pre-installed flood sensor with SentryPlus Alert® technology. To activate the sensor's advanced monitoring and alert features, an add-on connection kit is required.

Sensor Connectivity Options

  • BMS (Building Management System) compatibility
  • Cellular communication
  • Sensor Control Monitor for integration with BAS via RS-485 Modbus or the Nexa® platform through Wi-Fi.
View full details

Additional Details

This 3 inch lead free reduced pressure zone backflow preventer assembly by Watts is designed to prevent the reverse flow of polluted water into the potable water supply from backsiphonage or backpressure. It is ideal for health hazard cross-connections and continuous pressure piping applications.

Key Features

  • Features a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve, providing alerts for potential flooding events.
  • Utilizes ArmorTek® coating technology, a patented three-part advanced epoxy system, to resist microbial-induced corrosion (MIC) and protect exposed metal substrate.
  • Includes NRS (Non-rising stem) gate valves for reliable shutoff.
  • The relief valve incorporates an "air-in/water-out" design, offering maximum capacity during emergency conditions.
  • Constructed with an epoxy coated cast iron body and features stainless steel internal parts and replaceable seats for easy maintenance.
  • This NYC version comes with four sets of 304SS bolts/nuts with pre-drilled 1/4 inch holes, eliminating the need for flange drilling.

Flood Sensor Activation

  • An add-on connection kit is required to activate the flood sensor's alert features.
  • Compatible with connection kit options including BMS, cellular communication, and the Sensor Control Monitor for integration with BAS via RS-485 Modbus or the Nexa® platform through Wi-Fi.

Specifications

General

  • Product Type: Reduced Pressure Zone Backflow Preventer Assembly
  • Size: 3 inch
  • Brand: Watts
  • Model Series: LF909
  • Shutoff Valves: NRS (Non-Rising Stem) Gate Valves
  • Coating: ArmorTek® Patented 3-Part Advanced Epoxy System
  • Lead Content: Lead Free* (wetted surface contains less than 0.25% lead by weight)
  • Body Material: Cast Iron
  • Check Valve Body Material: Cast Iron
  • Relief Valve Body Material: Lead Free* Cast Copper Silicon Alloy (2 1/2" to 3")
  • Trim Material: Stainless Steel
  • Seat Material: Stainless Steel
  • Test Cock Material: Lead Free* Copper Silicon Alloy

Performance

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

Features

  • Flood Sensor: SentryPlus Alert® Technology
  • Bolts: 304SS Pre-Drilled Bolts/Nuts (NYC Version)
  • Relief Valve: Field Reversible, Air-in/Water-out Design
  • Internal Parts: Replaceable Seats, Stainless Steel
  • Flow Restrictor: Included

Certificates & Approvals

  • ASSE: Standard 1013
  • AWWA: Standard C511-92
  • CSA: CSA B64.4
  • UL: Classified File No. EX3185
  • FM: Approved
  • IAPMO: Listed (UPC)
  • NSF: Certified to NSF/ANSI 61-G
  • Approved By: Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California

FAQs

What is the primary purpose of the Watts LF909 Reduced Pressure Zone Assembly?

The primary purpose is to protect the potable water supply from contamination due to reverse flow (backsiphonage and backpressure) of polluted water from hazardous cross-connections.

What does the ArmorTek® coating provide?

The ArmorTek® coating is a patented three-part advanced epoxy system applied to the cast iron body and internals. It is engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal substrate, enhancing the assembly's durability.

How does the flood sensor work, and what is required to activate its alert features?

The flood sensor with SentryPlus Alert® technology detects excessive water discharges from the relief valve. To activate its alert features for notification to facility personnel, an add-on connection kit (BMS, cellular, or Sensor Control Monitor) is required.

What type of shutoff valves are included with this assembly?

This assembly is equipped with NRS (Non-Rising Stem) gate valves, which provide reliable and secure shutoff capabilities for the system.

Is this assembly suitable for use in New York City (NYC)?

Yes, this is an NYC version and comes with four sets of 304SS bolts/nuts that have a 1/4 inch hole drilled axially through the bolt, meeting specific installation requirements.

Related Products

1 4