8 LF709-NRS-S-IOT

Item Number: 88003401
1 1
$40,647.00
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts
  • Lead Free: Yes
  • Nominal Size: 8 inch
  • Body Material: Fused Epoxy Coated Cast Iron
  • Maximum Working Pressure: 175 psi
  • Shutoffs: Non-Rising Stem (NRS) Gate Valves
  • Integrated Pressure-Sensing Test Cocks
  • ArmorTek® Coating for corrosion resistance
  • Approved for vertical flow up installation

Description

The 8 inch Watts LF709-NRS-S-IOT Lead Free Double Check Valve Backflow Preventer Assembly protects potable water supplies from contaminated non-potable water via backsiphonage or backpressure. This robust assembly features a fused epoxy coated cast iron body with ArmorTek® coating for enhanced corrosion resistance, non-rising stem (NRS) gate valves, and an integrated strainer. It includes three pressure-sensing test cocks, enabling connection to an optional monitoring kit for BMS/DAS data transmission. Rated for 175 psi maximum working pressure and 33-110°F continuous temperature, it is ASSE 1015, UL, FM, and CSA B64.4 approved for non-health hazard cross-connections and vertical upflow. Item number 88003401.

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Connections and Compatibility

  • This 8 inch double check valve assembly is designed for installation in continuous pressure piping applications to prevent backsiphonage and backpressure of non-potable water into the potable water supply.
  • It is suitable for cross-connections identified as non-health hazards.
  • The integrated pressure-sensing test cocks are compatible with an add-on monitoring connection kit (sold separately) for data transmission to Building Management Systems (BMS) or Data Acquisition Systems (DAS).
  • The assembly is approved for vertical flow up installation.
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Additional Details

This 8 inch Watts LF709-NRS-S-IOT Lead Free Double Check Valve Backflow Preventer Assembly is engineered to prevent the reverse flow of contaminated non-potable water into the potable water supply due to backsiphonage or backpressure. It is ideal for continuous pressure piping applications and cross-connections identified as non-health hazards.

Construction & Design

  • Features a fused epoxy coated cast iron body and non-rising stem (NRS) resilient seated gate valves.
  • Includes an integrated strainer and test cocks.
  • Designed with a modular check design and center stem guide for easy maintenance, with captured springs accessible via a bolted cover plate.
  • ArmorTek® coating technology, a patented 3-part advanced epoxy system, helps limit microbial induced (MIC) and exposed metal substrate corrosion.

Integrated Monitoring Capabilities

  • Equipped with integrated pressure-sensing test cocks that measure pressure fluctuations at three points.
  • Compatible with an add-on monitoring connection kit (BMS/DAS only) for collecting, converting, and transmitting data values to a building management system.
  • Facilitates monitoring of assembly performance between code testing, helping to drive maintenance and repair scheduling.

Specifications

General

  • Product Type: Double Check Valve Backflow Preventer Assembly
  • Model: LF709-NRS-S-IOT
  • Nominal Size: 8 inch
  • Body Material: Fused Epoxy Coated Cast Iron
  • Coating Technology: ArmorTek® Patented 3-Part Advanced Epoxy System
  • Lead Free: Yes
  • Shutoffs: Non-Rising Stem (NRS) Resilient Seated Gate Valves
  • Temperature Range: 33°F – 110°F (0.5°C – 43°C) continuous
  • Maximum Working Pressure: 175 psi (12.1 bar)
  • Seals: Stainless Steel
  • Discs: EPDM
  • O-Rings: EPDM
  • Springs: Stainless Steel
  • Check Valve Body: Epoxy Coated Cast Iron
  • Strainer: Epoxy Coated

Monitoring Features

  • Test Cocks: Integrated Pressure-Sensing (3 locations)
  • Monitoring Kit Compatibility: Add-on kit for BMS/DAS systems (sold separately)

Certificates & Approvals

  • AWWA C510-92
  • IAPMO PM 10
  • Manual for Cross-Connection Control, 8th Edition
  • ASSE 1015
  • CSA B64.4
  • UL Listed (for 2½" – 10" sizes)
  • FM Approved (for 2½" – 10" sizes)
  • NSF Listed (Lead Free)

Dimensions & Weight (Approximate)

  • Length (A): 45¾ in (1162 mm)
  • Height (B): 29¼ in (743 mm)
  • Width (C closed): 23 in (584 mm)
  • Width (C open): 25¾ in (654 mm)
  • Length (D): 24¼ in (613 mm)
  • Overall Length (L): 67 in (1702 mm)
  • Height to Center Line (N): 8½ in (216 mm)
  • Distance Between Shutoffs (R): 18¾ in (476 mm)
  • Flange Width (U): 21 in (533 mm)
  • Assembly Weight: 470 lbs (213 kg)
  • Strainer Weight: 112 lbs (51 kg)

FAQs

What is the primary purpose of the Watts LF709-NRS-S-IOT backflow preventer?

The primary purpose is to prevent the reverse flow of contaminated non-potable water into a potable water supply, protecting it from backsiphonage and backpressure in continuous pressure piping applications.

What material is the body of the backflow preventer made from?

The body is constructed from fused epoxy coated cast iron, featuring ArmorTek® coating technology, a patented 3-part advanced epoxy system designed to resist microbial induced corrosion.

Does this assembly have monitoring capabilities?

Yes, it features integrated pressure-sensing test cocks at three points. These can be activated with an add-on monitoring connection kit (sold separately) to transmit data to a building management system.

What is the maximum operating pressure and temperature range for this device?

This backflow preventer has a maximum working pressure of 175 psi (12.1 bar) and operates continuously within a temperature range of 33°F to 110°F (0.5°C to 43°C).

Is this backflow preventer lead-free and certified?

Yes, this assembly is lead-free and carries certifications including ASSE 1015, AWWA C510-92, CSA B64.4, UL Listed, FM Approved, and NSF Listed, indicating compliance with relevant standards.