1 LF800M4-QT-FZ

Item Number: T792012
1 1
$642.00
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts
  • Nominal Size: 1 inch
  • Lead Free cast copper silicon alloy body
  • Freeze sensor included for temperature monitoring
  • Maximum Operating Pressure: 150 PSI
  • Maximum Operating Temperature: 140°F
  • Female NPT inlet and outlet connections
  • ASSE 1020 approved
  • Easy maintenance and winterization

Description

This 1 inch Watts LF800M4QT-FZ is a lead free anti-siphon pressure vacuum breaker backflow preventer. It prevents contaminated water from backsiphonage into potable water supplies. Constructed from lead free cast copper silicon alloy, it includes a freeze sensor with SentryPlus Alert® technology to monitor temperatures and alert personnel to potential freezing conditions. Key features include a replaceable plastic seat, silicone rubber check valve disc, and easy-access internal parts for maintenance. It operates up to 150 PSI and 140°F and is suitable for irrigation and industrial process water systems. Female NPT connections and quarter-turn shutoffs are standard.

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Connections

This 1 inch anti-siphon pressure vacuum breaker features female NPT inlet and outlet connections for straightforward installation into continuous pressure piping systems. The device includes tee handle quarter-turn ball valve shutoffs on both the inlet and outlet for control.

Compatibility

Ideal for use in applications such as irrigation systems and industrial process water systems where the water enters the equipment at or below its flood rim.

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Additional Details

This 1 inch Watts LF800M4QT-FZ lead free anti-siphon pressure vacuum breaker backflow preventer is designed to prevent backsiphonage of contaminated water into a potable water supply. It is ideally suited for irrigation systems and industrial process water systems, and continuous pressure piping where the water enters equipment at or below its flood rim.

Features

  • Equipped with a freeze sensor for SentryPlus Alert® technology, signaling facility personnel when temperatures approach freezing.
  • Sensor alerts are available with an add-on connection kit (sold separately) for Wi-Fi networks, building management systems (BMS), or irrigation management systems (IMS).
  • Lead Free cast copper silicon alloy body construction complies with Lead Free installation requirements.
  • Replaceable plastic seat for easy maintenance.
  • Easy access to internal parts for servicing without special tools.
  • Acetal bonnet designed as a "freeze plug" to prevent body damage.
  • Silicone rubber O-ring seal on the bonnet reduces fouling.
  • Durable silicone seat disc.
  • Test cocks for easy testing and winterization.
  • Compact, space-saving design.
  • Includes tee handle quarter-turn ball valve shutoffs on the inlet and outlet.

Materials

  • Body: Lead Free cast copper silicon alloy
  • Springs: Stainless steel
  • Bonnet: Acetal
  • Vent Disc: Silicone rubber
  • Disc Holder Float: Polypropylene
  • Check Valve Disc: Silicone rubber
  • Check Valve Seat: Ronyl® Plastic

Important Safety Information

The freeze sensor provides alerts about possible freeze events but cannot prevent freezing. User action is required to prevent freeze conditions from causing product and/or property damage. An add-on connection kit is required (sold separately) to activate the freeze sensor; without it, the sensor is a passive component. Watts is not responsible for alert failures due to connectivity issues, power outages, or improper installation.

Specifications

  • Product Type: Anti-Siphon Pressure Vacuum Breaker
  • Model: LF800M4QT-FZ
  • Nominal Size: 1 inch
  • Body Material: Lead Free cast copper silicon alloy
  • Springs Material: Stainless steel
  • Bonnet Material: Celcon®
  • Vent Disc Material: Silicone rubber
  • Disc Holder Float Material: Polypropylene
  • Check Valve Disc Material: Silicone rubber
  • Check Valve Seat Material: Ronyl® Plastic
  • Inlet/Outlet Connection: Female NPT
  • Maximum Operating Pressure: 150 PSI (10.3 bar)
  • Minimum Operating Pressure: 15 PSI (55 kPa)
  • Maximum Operating Temperature: 140°F (60°C)

Certificates & Approvals

  • ASSE 1020
  • USC Manual Section 10
  • Approved by Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California (for 1 inch size)
  • CSA 1/2" to 2" (1 inch pending)

Dimensions (1 inch)

  • A: 7 1/4 inches (184 mm)
  • B: 7 3/4 inches (197 mm)
  • C: 3 inches (76 mm)
  • D: 4 1/8 inches (105 mm)
  • E: 4 1/8 inches (105 mm)
  • G: 3 1/4 inches (83 mm)
  • Weight: 4.0 lbs (1.8 kg)

FAQs

What is the primary purpose of the Watts LF800M4QT-FZ backflow preventer?

Its primary purpose is to prevent backsiphonage of contaminated water from entering a potable water supply, ensuring the safety of drinking water.

Does this product include a freeze protection mechanism?

Yes, it includes a built-in freeze sensor for SentryPlus Alert® technology that monitors temperature and alerts personnel to potential freezing conditions. An add-on connection kit (sold separately) is required to activate the sensor's communication features.

What are the typical applications for this backflow preventer?

This backflow preventer is ideally suited for continuous pressure applications such as irrigation systems and industrial process water systems where water enters equipment at or below its flood rim.

What are the maximum operating pressure and temperature ratings?

The maximum operating pressure is 150 PSI (10.3 bar), and the maximum operating temperature is 140°F (60°C). The minimum operating pressure is 15 PSI (55 kPa).

Is special tooling required for servicing this device?

No, the Watts LF800M4QT-FZ is designed for easy maintenance of internal parts without requiring any special tools for servicing.