Watts 1 1/2" LF719-QT

Item Number: 0065305
1 1
$1,624.35
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts
  • Size: 1 1/2 inch
  • Weight: 16.1 lb
  • Body Material: Lead Free* cast copper silicon alloy
  • Maximum Operating Pressure: 175 PSI
  • Temperature Range: 33°F – 180°F
  • Elastomers: Chloramine resistant silicone and EPDM
  • Compliant with ASSE Std. 1015 and AWWA Std. C510
  • Top-mounted screwdriver slotted ball valve test cocks
  • Compact design with NPT end connections

Description

The Watts 1 1/2 inch LF719-QT Double Check Valve Assembly is a lead-free backflow preventer designed to protect drinking water from non-health hazard contamination. Featuring a durable cast copper silicon alloy body, this assembly prevents reverse flow due to backsiphonage or backpressure. It includes integral quarter-turn ball valves, NPT end connections, and top-mounted test cocks for easy maintenance. With reversible seat discs and chloramine-resistant elastomers, it offers extended service life and reliable performance within a 33°F to 180°F temperature range and up to 175 PSI. Compliant with ASSE 1015 and AWWA C510.

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Connections and Installation

  • This Watts LF719-QT assembly features NPT end connections for easy installation into your plumbing system.
  • It is designed for both horizontal and vertical installations, offering flexibility to meet various site requirements. The arrow on the valve body indicates the correct direction of flow.
  • The integral quarter-turn ball valves with lever handles allow for easy shut-off and control.
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Additional Details

The Watts 1 1/2 inch LF719-QT Double Check Valve Assembly is designed to protect drinking water supplies from dangerous cross-connections, preventing the reverse flow of contaminated non-potable water from entering the potable water supply. This lead-free device is suitable for non-health hazard applications, offering reliable protection against backsiphonage and backpressure.

This compact assembly features a lead-free cast copper silicon alloy body, integral quarter-turn ball valves, and NPT end connections, making it ideal for various installations.

Key Features

  • Manufactured from Lead Free* cast copper silicon alloy for compliant installations
  • Separate access, top entry check valve design allows for easy maintenance
  • Reversible seat disc rubber extends the operational life of the check valve
  • Equipped with chloramine resistant elastomers for enhanced durability
  • Features replaceable seats and seat discs for simplified servicing
  • Compact design suitable for various installation spaces
  • Top mounted screwdriver slotted ball valve test cocks for straightforward testing
  • Engineered for low pressure drop to maintain system efficiency
  • No special tools required for servicing, simplifying maintenance tasks
  • Plastic on plastic check guiding reduces potential binding caused by mineral deposits

Specifications

General

  • Product Series: LF719
  • Size: 1 1/2 inch
  • Assembly Type: Double Check Valve Assembly
  • Valve Type: Quarter-turn ball valves
  • End Connections: NPT

Materials

  • Body Material: Lead Free* cast copper silicon alloy
  • Elastomers: Chloramine resistant silicone and EPDM
  • Check Seats: PPO
  • Disc Holders: PPO

Performance

  • Operating Pressure: 175 PSI
  • Operating Temperature Range: 33°F – 180°F
  • Lead Content: Wetted surface contacted by consumable water contains less than 0.25% of lead by weight

Certificates & Approvals

  • AWWA Std C510 compliant
  • ASSE Std. 1015 compliant
  • Approved by the Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California
  • NSF/ANSI/CAN 61-G Certified
  • UL Classified C US

Dimensions & Weight (for 1 1/2" LF719QT)

  • A Dimension: 18 15/16 in (480 mm)
  • B Dimension: 6 1/8 in (156 mm)
  • C Dimension: 5 1/8 in (129 mm)
  • D Dimension: 25 1/4 in (640 mm)
  • E(LF) Dimension: 11 11/16 in (297 mm)
  • F Dimension: 4 3/4 in (121 mm)
  • G Dimension: 3 1/8 in (79 mm)
  • H Dimension: 1 5/8 in (41 mm)
  • M Dimension: 3 in (76 mm)
  • N Dimension: 4 7/8 in (124 mm)
  • Weight: 16.1 lbs (7.3 kgs)

FAQs

What is the primary purpose of the Watts LF719-QT Double Check Valve Assembly?

Its primary purpose is to protect potable drinking water supplies from contamination by non-health hazard substances, preventing reverse flow due to backsiphonage or backpressure in non-health hazard cross-connections.

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

The body is constructed from a Lead Free* cast copper silicon alloy, ensuring compliance with lead-free installation requirements.

What are the operating pressure and temperature limits for this device?

The Watts LF719-QT can operate at pressures up to 175 PSI and within a temperature range of 33°F to 180°F.

Can this assembly be installed in both horizontal and vertical orientations?

Yes, this double check valve assembly is designed for installation in both horizontal and vertical positions, as long as the flow arrow on the valve body indicates the correct direction of water flow.

How does the Watts LF719-QT facilitate maintenance?

It features a separate access top entry check valve design, replaceable seats and seat discs, and top-mounted screwdriver slotted ball valve test cocks, all designed to make maintenance and testing simple and efficient without requiring special tools.