6 LF709-QT-S-FDA-IOT

Item Number: 88003420
1 1
$25,304.25
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts
  • Size: 6 inch
  • Body Material: Fused epoxy coated cast iron
  • Coating: ArmorTek® three-part advanced epoxy system
  • Maximum Working Pressure: 175 psi
  • Operating Temperature Range: 33°F - 110°F continuous
  • Integrated pressure-sensing test cocks
  • Shutoff Valves: FDA epoxy coated quarter-turn ball valves
  • Lead Free construction

Description

The Watts Series LF709 6 inch Lead Free Double Check Valve Backflow Preventer Assembly prevents polluted water reverse flow into potable systems. It is suitable for non-health hazard cross-connections and continuous pressure applications. Featuring an FDA epoxy coated cast iron body and strainer, plus quarter-turn ball valves, it offers durability. Integrated pressure-sensing test cocks, activated by an optional monitoring kit, enable real-time performance assessment. ArmorTek® coating resists microbial-induced and electrochemical corrosion. With a 175 psi maximum working pressure and modular design for easy maintenance, this assembly ensures reliable backflow prevention. Item number 88003420.

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Connection Information

This 6 inch double check valve assembly is designed to be installed at referenced cross-connections within continuous pressure piping applications. It features integrated pressure sensors that, when activated with an add-on monitoring connection kit (sold separately), provide data on pressure fluctuations for monitoring assembly performance between code testing. The add-on connection kit communicates over a wired serial (RS-485) interface and is compatible with most Building Management Systems (BMS) and Building Automation Systems (BAS).

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Additional Details

This Watts Series LF709 6 inch Lead Free Double Check Valve Backflow Preventer Assembly is designed to prevent the reverse flow of polluted water into potable water systems. It is ideal for continuous pressure piping applications and cross-connections identified as non-health hazards.

This assembly features integrated pressure-sensing test cocks and ArmorTek® coating for enhanced monitoring and corrosion resistance.

Technology & Design

  • Features Smart and Connected technology with integrated pressure-sensing test cocks (No. 2, No. 3, No. 4) to measure pressure fluctuations.
  • Requires an add-on monitoring connection kit (sold separately) to activate sensors and transmit data to a Building Management System (BMS) or Building Automation System (BAS) for performance monitoring.
  • Utilizes ArmorTek® coating technology, a patented three-part advanced epoxy system, to resist microbial-induced corrosion (MIC) and protect exposed metal substrates.
  • Designed with a modular check concept for simplified maintenance, retaining the spring load for ease of service.
  • Equipped with FDA epoxy coated quarter-turn ball valve shutoffs and an FDA epoxy coated strainer.
  • Features replaceable stainless steel seats and captured spring assemblies for safety.
  • Approved for vertical flow up installation.

Specifications

  • Product Type: Double Check Valve Backflow Preventer Assembly
  • SKU: 88003420
  • Brand: Watts
  • Size: 6 inch
  • Check Valve Body Material: Fused epoxy coated cast iron
  • Coating: ArmorTek® powder coating (internal and external surfaces)
  • Seats: Stainless steel, replaceable
  • Shutoff Valves: FDA epoxy coated quarter-turn ball valves
  • Strainer: FDA epoxy coated
  • Pressure Sensors: Integrated at test cocks No. 2, No. 3, No. 4
  • Minimum Operating Temperature: 33°F (0.5°C) continuous
  • Maximum Operating Temperature: 110°F (43°C) continuous, 140°F (60°C) intermittent
  • Maximum Working Pressure: 175 psi (12.1 bar)
  • Approximate Length (L): 41 5/8 inch (1058 mm)
  • Approximate Weight (QT): 611 lbs (277 kg)
  • Strainer Approximate Weight: 122 lbs (55 kg)

Certificates & Approvals

  • ASSE No. 1015
  • AWWA C510-92
  • CSA B64.5
  • UL Classified File No. EX3185
  • IAPMO PA 31
  • USC Manual for Cross-Connection Control, 8th Edition
  • Approved by the Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California
  • NSF Certified to NSF/ANSI 61-G
  • FM Approved

FAQs

What is the primary purpose of the Watts LF709 Double Check Valve Assembly?

Its primary purpose is to prevent the reverse flow of polluted or contaminated water from non-potable sources into the potable water supply system due to backsiphonage or backpressure.

What type of water systems is this backflow preventer suitable for?

This assembly is ideal for continuous pressure piping applications and cross-connections identified as non-health hazards where local authority approval is obtained.

How does the "Smart and Connected" technology work on this LF709 model?

The "Smart and Connected" technology includes integrated pressure-sensing test cocks (No. 2, No. 3, and No. 4). An add-on monitoring connection kit (sold separately) is required to activate these sensors and transmit pressure fluctuation data to a Building Management System for performance assessment.

What is ArmorTek® coating and what are its benefits?

ArmorTek® is a patented three-part advanced epoxy coating system applied to the iron components of the backflow preventer. It is engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal substrates from corrosion.

What are the key features that simplify maintenance for this valve assembly?

The LF709 series features a modular check design concept that facilitates complete maintenance and assembly by retaining the spring load. It also uses replaceable stainless steel seats and requires no special tools for servicing.