6 LF709-NRS-S-FDA-IOT

Item Number: 88003392
1 1
$20,437.50
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts
  • Lead Free construction (less than 0.25% lead by weight)
  • Size: 6 inch
  • ArmorTek® advanced epoxy coating for corrosion resistance
  • Integrated pressure sensors for performance monitoring
  • NRS (Non-Rising Stem) resilient seated gate valves
  • FDA epoxy coated strainer included
  • Maximum Operating Pressure: 175 psi
  • Modular design with replaceable stainless steel seats

Description

This 6 inch Watts LF709 Lead Free Double Check Valve Backflow Preventer Assembly is designed to prevent the reverse flow of polluted water into the potable water system from non-health hazard cross-connections. Featuring advanced ArmorTek coating technology, it resists microbial-induced corrosion. The assembly includes NRS gate valves, an FDA epoxy-coated strainer, and integrated pressure sensors for monitoring (with an optional connection kit). Its modular design allows for easy maintenance, and it is rated for a maximum working pressure of 175 psi. Ideal for commercial and industrial applications requiring reliable backflow protection.

Help Me Connect

Smart & Connected Technology Integration

  • This Watts LF709 Double Check Valve Assembly features integrated pressure sensors at test cocks No. 2, No. 3, and No. 4.
  • To activate these sensors and collect data for monitoring assembly performance and the water supply system, an add-on monitoring connection kit is required (sold separately).
  • The add-on connection kit communicates over a wired serial (RS-485) interface.
  • It is designed for compatibility with most Building Management Systems (BMS) and Building Automation Systems (BAS), allowing for remote monitoring and data analysis.
View full details

Additional Details

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

Key Features

  • Features a modular check design concept to facilitate complete maintenance and assembly by retaining the spring load.
  • Utilizes ArmorTek® coating technology, a patented three-part advanced epoxy system, to resist microbial-induced corrosion (MIC) and protect exposed metal surfaces.
  • Constructed with Lead Free* materials to comply with installation requirements.
  • Equipped with NRS (Non-Rising Stem) resilient seated gate valves for shutoff.
  • Includes an FDA epoxy coated strainer.
  • Replaceable stainless steel seats and captured spring assemblies for enhanced safety and easier servicing.
  • Approved for vertical flow up installation.
  • No special tools are required for servicing.

Smart & Connected Technology

  • Comes standard with integrated pressure sensors at test cocks No. 2, No. 3, and No. 4 to measure pressure fluctuations.
  • Enables monitoring and assessment of backflow assembly performance and the water supply system when activated with an add-on monitoring connection kit.
  • The add-on connection kit communicates over a wired serial (RS-485) interface and is compatible with most Building Management and Building Automation Systems (BMS/BAS).

It is essential to thoroughly read all installation instructions and product safety information before beginning the installation of this product. Consult governing authorities for local installation requirements.

Specifications

  • Model: LF709
  • Size: 6 inch
  • Lead Free: Yes (wetted surface contains less than 0.25% lead by weight)
  • Maximum Working Pressure: 175 psi (12.1 bar)
  • Temperature Range (Continuous): 33°F - 110°F (0.5°C - 43°C)
  • Temperature Range (Intermittent): 140°F (60°C)

Materials

  • Check Valve Body: Epoxy coated cast iron
  • Seats: Stainless steel
  • Coating: ArmorTek powder coating (applied to internal and external surfaces)
  • Shutoff Valves: NRS resilient seated gate valves
  • Strainer: FDA epoxy coated

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 Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California
  • NSF Certified to NSF/ANSI 61-G

FAQs

What is the primary function of this Watts LF709 backflow preventer?

The primary function of this 6 inch Watts LF709 assembly is to prevent polluted water from flowing in reverse, back into the potable water supply. It is intended for non-health hazard installations.

What does 'Lead Free' mean for this product?

The 'Lead Free' designation indicates that the wetted surface of this product, which comes into contact with consumable water, contains less than 0.25% lead by weight, complying with current lead-free installation requirements.

How does the ArmorTek coating benefit the backflow preventer?

The ArmorTek coating is a patented three-part advanced epoxy system applied to the internal and external surfaces. It is engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal substrates, extending the life and reliability of the assembly.

Are special tools required for servicing this backflow preventer?

No, this Watts LF709 assembly features a simplified modular design concept and replaceable stainless steel seats, making it possible to service it without the need for special tools.

How do the integrated pressure sensors work, and what is needed to use them?

The assembly comes with integrated pressure sensors at three test cock locations to measure pressure fluctuations. To activate these sensors and collect data for monitoring backflow assembly performance, an add-on monitoring connection kit is required. This kit transmits data via a wired serial (RS-485) interface to Building Management and Building Automation Systems (BMS/BAS).

Related Products

1 2