4 LF709-NRS-S-IOT

Item Number: 88003387
1 1
$11,516.25
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts
  • 4 inch Lead Free Double Check Valve Assembly
  • Maximum Operating Pressure: 175 PSI
  • Body Material: Epoxy coated cast iron
  • ArmorTek® coating for corrosion resistance
  • Integrated pressure-sensing test cocks for monitoring
  • Includes NRS resilient seated gate valves and strainer
  • Modular design for simplified maintenance
  • Approved for vertical flow up installation

Description

The Watts 4 inch Series LF709 Lead Free Double Check Valve Assembly (SKU 88003387) protects potable water systems from polluted water backflow in non-health hazard applications. Featuring a robust epoxy coated cast iron body with ArmorTek® corrosion-resistant coating, this assembly ensures durability. It includes NRS resilient seated gate valves and a strainer. Integrated pressure-sensing test cocks enable performance monitoring when activated with an add-on kit. Designed for easy maintenance with a modular check, it operates up to 175 PSI and is approved for vertical flow up installations. Item number 88003387.

Help Me Connect

Connections

  • This assembly is installed at cross-connections to prevent backflow of polluted water into the potable water supply in non-health hazard situations.
  • The integrated pressure-sensing test cocks provide points for monitoring pressure fluctuations within the system. An add-on monitoring connection kit (sold separately) is required to activate these sensors and transmit data to a Building Management System (BMS/BAS).
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Additional Details

The Watts 4 inch Series LF709 Lead Free Double Check Valve Assembly is designed to prevent the reverse flow of polluted water from entering into potable water systems for non-health hazard installations.

This backflow preventer features integrated pressure-sensing test cocks and a modular design for simplified maintenance.

Features

  • Modular check design concept to facilitate complete maintenance and assembly by retaining the spring load.
  • Integrated pressure sensors adapted to test cocks on Model IOT for measuring pressure fluctuations.
  • ArmorTek® coating technology to resist microbial-induced corrosion (MIC) and protect exposed metal.
  • Lead Free* construction to comply with installation requirements, with wetted surface containing less than 0.25% of lead by weight.
  • Replaceable stainless steel seats.
  • Maximum flow at low pressure drop.
  • No special tools required for servicing.
  • Captured spring assemblies for safety.
  • Approved for vertical flow up installation.
  • Includes NRS resilient seated gate valves and a strainer.

Technology

  • Features Smart and Connected IOT technology for monitoring assembly performance and water supply system aspects.
  • An add-on monitoring connection kit (sold separately) is required to activate sensors and transmit data to Building Management/Automation Systems (BMS/BAS).

Watts is not responsible for data transmission failures due to power issues. The use of integrated pressure sensors and monitoring connection kit does not replace the need to comply with all required instructions, codes, and regulations for backflow preventer installation, operation, and maintenance.

Specifications

  • Valve Type: Double Check Valve Assembly
  • Size: 4 inch
  • Body Material: Epoxy coated cast iron
  • Coating: ArmorTek® powder coating (applied to internal and external surfaces)
  • Seats: Stainless steel
  • Shutoff Valves: NRS resilient seated gate valves
  • Maximum Working Pressure: 175 psi (12.1 bar)
  • Continuous Temperature Range: 33°F - 110°F (0.5°C - 43°C)
  • Intermittent Temperature: 140°F (60°C)

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 the Watts LF709 Double Check Valve Assembly?

It is designed to prevent the reverse flow of polluted water from non-health hazard installations into the potable water supply, protecting the drinking water system from contamination.

Is this backflow preventer compliant with lead-free regulations?

Yes, the Watts Series LF709 features Lead Free* construction. This means the wetted surface of the product contacted by consumable water contains less than 0.25% of lead by weight, complying with current lead-free installation requirements.

What is ArmorTek® coating, and why is it important for this product?

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

How does the Smart and Connected IOT technology work with this assembly?

The IOT model includes integrated pressure sensors at test cocks No. 2, No. 3, and No. 4 to measure pressure fluctuations. To activate these sensors and transmit data to a Building Management System (BMS/BAS), an add-on monitoring connection kit is required, which is sold separately.

What are the maximum operating pressure and temperature for the 4 inch LF709?

The maximum working pressure for this assembly is 175 psi (12.1 bar). It can operate continuously in temperatures ranging from 33°F to 110°F (0.5°C to 43°C) and intermittently up to 140°F (60°C).