2.5 LF709-NRS-IOT

Item Number: 88003386
1 1
$9,060.00
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts
  • Double Check Valve Assembly
  • Nominal Size: 2 1/2 inch
  • Maximum Operating Pressure: 175 psi
  • Body Material: Epoxy Coated Cast Iron
  • Coating: ArmorTek Powder Coating for corrosion resistance
  • Features Integrated Pressure Sensors for IOT monitoring
  • Lead Free* construction (less than 0.25% lead by weight)
  • Equipped with Non-Rising Stem (NRS) Gate Valves

Description

The Watts 2 1/2 inch LF709-NRS-IOT Double Check Valve Assembly is designed to prevent polluted water from re-entering potable water systems in non-health hazard installations. Featuring Lead Free* construction and ArmorTek® corrosion-resistant coating, this assembly offers enhanced durability and safety. It includes integrated pressure sensors for monitoring system performance with an optional add-on connection kit. The modular design simplifies maintenance, and its non-rising stem gate valves provide reliable shutoff. Approved for vertical flow-up installation, it ensures consistent operation with low pressure drop. Item number 88003386.

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Monitoring Connection

The integrated pressure sensors on the Watts LF709-NRS-IOT assembly require an add-on monitoring connection kit to collect and transmit data. This connection kit communicates over a wired serial (RS-485) interface.

  • Compatible with most Building Management Systems (BMS).
  • Compatible with most Building Automation Systems (BAS).
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Additional Details

The Watts 2 1/2 inch LF709-NRS-IOT Double Check Valve Assembly prevents the reverse flow of polluted water from entering potable water systems in non-health hazard installations.

This assembly integrates advanced monitoring capabilities with robust construction for reliable backflow prevention and system insight.

Key Features

  • Lead Free* construction with wetted surfaces containing less than 0.25% lead by weight.
  • Modular check design facilitates complete maintenance and assembly by retaining the spring load.
  • Integrated pressure sensors at test cocks No. 2, No. 3, and No. 4 measure pressure fluctuations, activatable with an add-on monitoring connection kit (BMS/BAS only).
  • ArmorTek® coating technology resists microbial-induced corrosion (MIC) and protects exposed metal substrates.
  • Equipped with non-rising stem (NRS) resilient seated gate valves.
  • 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.

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

Specifications

General

  • Product Type: Double Check Valve Assembly
  • Valve Type: Non-Rising Stem (NRS) Gate Valves
  • Nominal Size: 2 1/2 inch

Performance

  • 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)
  • Lead Content: Wetted surface contains less than 0.25% lead by weight

Smart Technology

  • Sensors: Integrated pressure-sensing test cocks (No. 2, No. 3, No. 4)
  • Monitoring System: IOT Model (requires add-on monitoring connection kit for data transmission)

Certificates & Approvals

  • ASSE: 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 purpose of the Watts LF709-NRS-IOT Double Check Valve Assembly?

Its primary purpose is to prevent the reverse flow of polluted water from entering a potable water supply system in applications identified as non-health hazards.

Does this assembly comply with lead-free requirements?

Yes, it features Lead Free* construction, meaning the wetted surfaces of the product that contact consumable water contain less than 0.25% lead by weight. It is also NSF Certified to NSF/ANSI 61-G.

How does the ArmorTek® coating benefit this backflow preventer?

The ArmorTek® patented three-part advanced epoxy coating system is engineered to reduce microbial-induced corrosion (MIC) and protect all exposed metal substrate surfaces, extending the lifespan of the assembly.

What are the "integrated pressure sensors" and how do they work?

The assembly includes pressure sensors integrated at test cocks No. 2, No. 3, and No. 4. These sensors measure pressure fluctuations and require an add-on monitoring connection kit (sold separately) to activate them and transmit data to a Building Management or Automation System.

Can this backflow preventer be installed vertically?

Yes, the Watts LF709-NRS-IOT Double Check Valve Assembly is approved for vertical flow up installation, offering flexibility for various piping configurations.