1 1/4 LF767FR PVB

Item Number: 0683030
1 1
$1,557.76
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Lead Free Cast Copper Silicon Alloy body
  • Weight: 11.3 lb
  • Freeze resistant with built-in relief valve
  • Quarter-turn lever handle ball valve shutoffs
  • Maximum Working Pressure: 150 PSI (10.3 bar)
  • Minimum Working Pressure: 15 PSI (103 kPa)
  • Temperature Range: 33°F to 140°F
  • ASSE® 1020 and CSA B64.4 listed
  • Internal parts serviceable from the top

Description

This 1 1/4 inch FEBCO LF767FR Pressure Vacuum Breaker Backflow Preventer protects potable water supplies from backsiphonage of polluted water. Designed for continuous pressure applications, it features a lead free cast copper silicon alloy body and freeze-resistant capabilities, including a built-in relief valve. With quarter-turn lever handle ball valve shutoffs and accessible test cocks, it allows for easy isolation, testing, and winterization. It operates within 15 to 150 PSI and 33°F to 140°F, meeting ASSE® 1020 and CSA B64.4 standards. All internal parts are serviceable from the top for simple maintenance.

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Installation Guidance

  • This valve is designed for installation in a continuous pressure potable water supply system.
  • Install at the highest point of the downstream piping.
  • The valve must be installed with the supply connected to the bottom and in a vertical position.
  • Ensure adequate drainage freeze protection is provided in cold weather applications.
  • A minimum of 1.5 PSI (10 kPa) must be exerted against the float spring to seal the float and air inlet.
  • Do not undersize supply and discharge piping.

Freeze Protection Guidelines

  • First, close the main shutoff valve.
  • Open upstream drain, test cocks, and isolation ball valves to depressurize the site.
  • Purge the system with air.
  • Leave test cocks and isolation ball valve handles in a 45° angle to drain ball valves and prevent casting damage.
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Additional Details

The FEBCO 1 1/4 inch LF767FR Pressure Vacuum Breaker Backflow Preventer prevents the reverse flow of polluted water from entering into a potable water supply due to backsiphonage. This freeze-resistant unit is ideal for continuous pressure health hazard applications where exposure to sudden freezing conditions may occur, such as in irrigation systems.

Key Features

  • Features a unique built-in relief valve that protects internal components and the body from freezing.
  • Constructed with a Lead Free cast copper silicon alloy body for durability.
  • Includes two quarter-turn lever handle ball valve shutoffs for isolation.
  • Equipped with test cocks for simplified testing and winterization draining.
  • Designed for easy maintenance with all internal parts serviceable from the top of the unit.
  • Utilizes a silicone rubber check valve disc and Noryl plastic check valve seat.
  • Compact, space-saving design with no special tools required for servicing.

Specifications

General Specifications

  • Product Type: Pressure Vacuum Breaker Backflow Preventer
  • Size: 1 1/4 inch
  • Brand: FEBCO
  • Series: LF767FR
  • Body Material: Lead Free Cast Copper Silicon Alloy
  • Bonnet Material: Celcon®
  • Check Valve Disc: Silicone Rubber
  • Check Valve Seat: Noryl Plastic
  • Vent Disc: Silicone Rubber
  • Springs Material: Stainless Steel
  • Disc Holder Float Material: Polypropylene
  • Shutoff Type: Quarter Turn Lever Handle Ball Valves
  • Serviceability: All internal parts serviceable from top
  • Test Cocks: Included

Performance Data

  • Minimum Working Pressure: 15 PSI (103 kPa)
  • Maximum Working Pressure: 150 PSI (10.3 bar)
  • Temperature Range: 33°F to 140°F (0.5°C to 60°C)

Dimensions & Weight (Approximate)

  • Overall Height (A): 8 inches (203 mm)
  • Width (B): 6 inches (152 mm)
  • Depth (C): 2.75 inches (70 mm)
  • Inlet to Outlet (E): 7 inches (178 mm)
  • Weight: 14 lbs (6.3 kg)

Certificates & Approvals

  • ASSE® 1020
  • CSA B64.4
  • IAPMO R&T®

FAQs

What is the primary function of the FEBCO 1 1/4 inch LF767FR PVB?

The primary function is to prevent contaminated water from being siphoned back into the potable water supply, protecting it from pollution.

Is this backflow preventer suitable for cold climates?

Yes, it is designed to be freeze-resistant and includes a built-in relief valve to protect internal components and the body from damage due to ice formation.

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

The backflow preventer operates effectively within a minimum working pressure of 15 PSI and a maximum working pressure of 150 PSI. Its temperature range is 33°F to 140°F.

How is the LF767FR PVB maintained?

All internal parts are serviceable from the top of the unit, allowing for easy access and maintenance without requiring special tools. Test cocks are also included for convenient testing and winterization.

What type of material is the body made from?

The body is constructed from a Lead Free cast copper silicon alloy, ensuring durability and compliance with lead-free standards.