2 1/2 LF007-DOSY

Item Number: 0792148
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$8,268.09
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts
  • Size: 2 1/2 inch
  • Weight: 207.0 lb
  • Body Material: Lead Free* Cast Iron
  • Coating: ArmorTek® Fused Epoxy
  • Maximum Working Pressure: 175 PSI
  • Temperature Range: 33°F - 110°F Continuous
  • Valves: Domestic OSY Resilient Seated Gate Valves
  • IoT Pressure Sensors: Integrated at Test Cocks
  • Certifications: ASSE 1015, AWWA C510, IAPMO PS31, CSA B64.5

Description

The Watts 2 1/2 inch LF007-DOSY Lead Free Double Check Valve Backflow Preventer Assembly protects potable water supplies from pollution due to backflow. It features a durable Lead Free* cast iron body with ArmorTek® fused epoxy coating for superior corrosion and microbial resistance. Rated for 175 PSI and 33-110°F continuous, this assembly includes domestic OSY gate valves and IoT pressure sensors. Its modular, top-entry design allows for easy maintenance without special tools. Certified to ASSE 1015, AWWA C510, IAPMO PS31, and CSA B64.5, ensuring reliable performance in non-health hazard cross-connection applications.

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Application and Connections

  • Designed for installation at cross-connections to prevent backflow of polluted water into the potable water supply.
  • Suitable for continuous pressure piping applications and non-health hazard conditions.
  • Features union connections for installation.
  • Integrated IoT pressure sensors require an add-on monitoring connection kit for data collection and communication with Building Management or Building Automation Systems via wired serial (RS-485) interface. Without this kit, sensors are passive.
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Additional Details

This 2 1/2 inch Watts LF007-DOSY Lead Free Double Check Valve Backflow Preventer Assembly is designed to prevent the backflow of polluted water into the potable water supply due to backsiphonage or backpressure. It is ideal for continuous pressure piping applications and at cross-connections identified as non-health hazards.

Features

  • Lead Free* construction to comply with installation requirements
  • Modular, compact design facilitates maintenance and assembly by retaining spring load
  • ArmorTek® coating technology resists corrosion of internals, including microbial-induced corrosion (MIC)
  • Fused epoxy coated cast iron body
  • Domestic OSY resilient seated gate valves
  • Top-mounted Lead Free* ball valve test cocks
  • Integrated sensors adapted to test cocks (No. 2, 3, and 4) for measuring pressure fluctuations (activated with an add-on monitoring connection kit)
  • Replaceable seats and seat discs
  • Easier maintenance through a single, top-entry cover
  • No special tools required for servicing
  • Low pressure drop

Installation, operation, and maintenance must comply with all required instructions, codes, and regulations. Inquire with governing authorities for local installation requirements.

Specifications

  • Size: 2 1/2 inch
  • Body Material: Lead Free* cast iron
  • Body Coating: ArmorTek® powder coating (fused epoxy, applied to internal and external surfaces)
  • Check Module: Captured spring and rubber seat disc
  • Access Cover Bolts: Stainless steel
  • Isolation Valves: Domestic OSY resilient seated gate valves
  • Test Cocks: Top-mounted Lead Free* ball valve test cocks with IoT pressure sensors
  • Connections: Union

Pressure & Temperature

  • Temperature Range (Continuous): 33°F - 110°F (0.5°C - 43°C)
  • Temperature Range (Intermittent): 140°F (60°C)
  • Maximum Working Pressure: 175 PSI (12.1 bar)

Certificates & Approvals

  • ASSE Standard 1015
  • AWWA Standard C510
  • IAPMO PS31
  • CSA B64.5
  • UL Classified with OSY gate valves (horizontal only)
  • Approved by Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California
  • Horizontal and vertical "flow up" approval on all sizes

FAQs

What is the primary function of the Watts LF007-DOSY backflow preventer?

Its primary function is to prevent the backflow of polluted water from entering into the potable water supply due to backsiphonage or backpressure.

What material is the body made from and what coating does it have?

The body is constructed from Lead Free* cast iron and features an ArmorTek® powder coating, which is a fused epoxy applied to both internal and external surfaces for enhanced corrosion resistance.

What are the temperature and pressure limitations for this assembly?

It can operate continuously between 33°F and 110°F (0.5°C - 43°C), with an intermittent temperature range up to 140°F (60°C). The maximum working pressure is 175 PSI (12.1 bar).

Does this backflow preventer have integrated monitoring capabilities?

Yes, it includes IoT pressure sensors adapted to test cocks for measuring pressure fluctuations. An add-on monitoring connection kit is required to activate these sensors and communicate data to Building Management or Building Automation Systems.

What certifications does the LF007-DOSY assembly hold?

This assembly is certified to ASSE Standard 1015, AWWA Standard C510, IAPMO PS31, and CSA B64.5. It is also UL Classified with OSY gate valves (horizontal only) and approved by the Foundation for Cross-Connection Control and Hydraulic Research at USC.

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