Watts 1" LF909-QT-HW Hot Water Device

Item Number: 0792032
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$4,446.00
Limited Stock (1)
Estimated transit time: 2 to 5 Business Days Eligible for Express Shipping

Brand - Watts
  • Nominal Size: 1 inch
  • Weight: 16.5 lb
  • Body Material: Lead Free Cast Copper Silicon Alloy
  • Maximum Operating Pressure: 175 PSI
  • Temperature Range: 33°F - 210°F (Hot Water)
  • Connection Type: 1 inch NPT Female Threaded
  • Features Quarter-Turn Ball Shutoff Valves
  • Stainless Steel Check Modules for harsh water
  • Modular, compact design for easy installation

Description

The Watts 1 inch LF909-QT-HW is a Lead Free Reduced Pressure Zone (RPZ) backflow preventer assembly designed for hot water applications, approved for temperatures up to 210°F. It prevents polluted water from entering potable water supplies due to backsiphonage or backpressure, meeting national plumbing codes. Constructed with a Lead Free cast copper silicon alloy body and stainless steel check modules, it offers durability for harsh conditions. Its modular, compact design with replaceable seats and quarter-turn ball valves ensures easy installation and maintenance. The device features 1 inch NPT female threaded connections. Item number 0792032.

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Connections

  • The 1 inch LF909-QT-HW backflow preventer features 1 inch NPT female threaded body connections on both the inlet and outlet. This allows for direct threading onto corresponding 1 inch NPT male pipes.

Installation Guidance

The assembly can be installed either horizontally or vertically (up or down) in lines ranging from 3/4 inch to 1 inch. For drain line installation, it is recommended to use an air gap with a drain fitting to properly manage relief valve discharge and prevent water damage.

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Additional Details

The Watts 1 inch LF909-QT-HW Reduced Pressure Zone (RPZ) backflow preventer assembly protects potable water supplies from pollution due to backsiphonage or backpressure. This device is specifically approved for hot water applications and is designed to meet national plumbing codes and water authority requirements for cross-connection control.

Its compact, modular design allows for easy maintenance and in-line repairs. The assembly features a lead free bronze body and quarter-turn ball valve shutoffs with tee handles, alongside durable stainless steel check modules suitable for hot and harsh water conditions. Replaceable seats ensure long service life.

Features

  • Lead Free cast copper silicon alloy body
  • Unique patented air-in and water-out design provides high capacity relief valve discharge
  • Quarter-turn ball valve shutoffs with tee handles
  • Durable stainless steel check modules for hot and harsh water conditions
  • Replaceable seats for extended product life
  • Modular, compact design easing installation and maintenance
  • Can be installed horizontal or vertical (up or down) on limited sizes
  • No special tools required for servicing
  • Single access cover for simplified repairs

This is a non-stock, special order item and could take up to 2 weeks or more to deliver. All non-stock items are non-refundable. Please be sure you order carefully. If you have ANY questions please contact us before ordering.

Specifications

  • Series: LF909HW
  • Product Type: Reduced Pressure Zone Backflow Preventer
  • Nominal Size: 1 inch
  • Body Material: Lead Free* Cast Copper Silicon Alloy
  • Check Module Material: Stainless Steel (for hot and harsh water conditions)
  • Check Seats: Stainless Steel 909
  • Relief Valve Seats: Stainless Steel 909
  • Test Cocks: Lead Free* Cast Copper Silicon Alloy
  • Shutoff Valves: Quarter Turn Ball Valves with Tee Handles
  • Maximum Working Pressure: 175 PSI (12.1 bar)
  • Temperature Range: 33°F - 210°F (0.5°C – 99°C)

Connections

  • Inlet/Outlet: 1 inch NPT Female threaded body connection

Certificates & Approvals

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

FAQs

What is the primary use of the Watts LF909-QT-HW backflow preventer?

This device is designed to protect potable water supplies from contamination caused by backsiphonage or backpressure, particularly in systems with hot water and health hazard cross-connections.

What temperature range is this backflow preventer rated for?

The Watts LF909-QT-HW is rated for a continuous temperature range of 33°F to 210°F (0.5°C to 99°C), making it suitable for hot and harsh water applications.

What type of connections does this backflow preventer have?

It features 1 inch NPT (National Pipe Taper) female threaded body connections for both the inlet and outlet.

Can this backflow preventer be installed in any orientation?

Yes, the Watts LF909-QT-HW can be installed horizontally or vertically (up or down). Its compact, modular design also aids in flexible installation.

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

The body is made from Lead Free cast copper silicon alloy, while the check modules and seats are constructed of stainless steel for durability in hot and harsh water conditions.

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