2 LF800M4-QT-FZ

Item Number: T792015
Skip to product information
1 of 1
Regular price $1,596.00
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts

  • 2 inch nominal pipe size
  • Lead Free cast copper silicon alloy body
  • Integrated freeze sensor with SentryPlus Alert® compatibility
  • Female NPT inlet and outlet connections
  • Maximum operating pressure: 150 psi
  • Operating temperature range: 33°F to 140°F
  • Equipped with quarter-turn lever handle shutoffs
  • Approved by ASSE 1020 and CSA B64.4

Description

This 2 inch Watts LF800M4-QT-FZ is a lead-free anti-siphon pressure vacuum breaker designed to prevent the reverse flow of polluted water into potable water supplies. It features a durable cast copper silicon alloy body and includes an integrated freeze sensor compatible with SentryPlus Alert® technology for temperature monitoring. Ideal for health hazard continuous pressure applications like irrigation systems and industrial process water, it offers female NPT inlet and outlet connections with quarter-turn shutoffs. It operates reliably within a temperature range of 33°F to 140°F and handles maximum pressures up to 150 psi.

Help Me Connect

Connections

  • The female NPT inlet and outlet connections on this 2 inch anti-siphon pressure vacuum breaker allow for direct threading onto corresponding 2 inch male NPT pipes or fittings.
  • Installation is typically required at least 12 inches above the highest point of the downstream plumbing in continuous pressure applications.

Freeze Sensor Compatibility

  • The integrated freeze sensor is designed for use with SentryPlus Alert® technology to provide temperature monitoring.
  • To enable remote alerts via Wi-Fi networks, building management systems (BMS), or irrigation management systems (IMS), an add-on connection kit (sold separately) is required to activate the monitoring system.
View full details

Collapsible content

Additional Details

This 2 inch lead free anti-siphon pressure vacuum breaker backflow preventer prevents the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It is designed for health hazard continuous pressure applications, such as irrigation systems and industrial process water systems, where water enters equipment at or below its flood rim.

Construction & Features

  • Features a lead free cast copper silicon alloy body, silicone rubber check valve disc, plastic check valve seat, and stainless steel springs.
  • Includes a bonnet with silicone rubber O-ring seal, a lightweight plastic disc float, and lever handle shutoffs.
  • Equipped with test cocks for winterization draining and maintenance.
  • Integrated female NPT inlet and outlet connections.

Freeze Sensor Technology

  • This model includes an integrated freeze sensor for use with SentryPlus Alert® technology to signal facility personnel when temperatures approach freezing.
  • The freeze sensor alerts can be integrated with an add-on connection kit (sold separately) for Wi-Fi networks, building management systems (BMS), and irrigation management systems (IMS).
  • A freeze sensor provides alerts about a possible freeze event but cannot prevent a freeze event from occurring. User action is required to prevent freeze conditions from causing product and/or property damage.

Specifications

  • Body Material: Lead Free cast copper silicon alloy
  • Nominal Size: 2 inch
  • Check Valve Disc: Silicone rubber
  • Check Valve Seat: Noryl® plastic
  • Bonnet O-ring Seal: Silicone rubber
  • Disc Holder Float: Polypropylene
  • Springs: Stainless steel
  • Bonnet: Celcon®
  • Vent Disc: Silicone rubber

Performance

  • Temperature Range: 33°F to 140°F (0.5°C to 60°C)
  • Maximum Working Pressure: 150 psi (10.3 bar)
  • Minimum Working Pressure: 15 psi (55 kPa)

Connections

  • Inlet/Outlet: Female NPT

Certificates & Approvals

  • ASSE Standard 1020
  • USC Manual Section 10
  • IAPMO® Listed
  • CSA B64.4

FAQs

What is the primary function of the Watts LF800M4-QT-FZ pressure vacuum breaker?

Its primary function is to prevent backsiphonage, stopping the reverse flow of non-potable water from entering and contaminating a potable water system.

What is the significance of the "lead free" designation for this product?

The "lead free" designation means the product is constructed from lead-free cast copper silicon alloy, ensuring compliance with regulations for potable water systems and preventing lead contamination.

How does the integrated freeze sensor work, and what is its purpose?

The integrated freeze sensor monitors temperatures and, when used with SentryPlus Alert® technology, signals facility personnel if temperatures approach freezing. Its purpose is to provide alerts so action can be taken to prevent freeze damage.

What types of applications is this 2 inch pressure vacuum breaker suitable for?

This pressure vacuum breaker is ideal for health hazard 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 limits for this device?

This device has a maximum operating pressure of 150 psi (10.3 bar) and can operate within a temperature range of 33°F to 140°F (0.5°C to 60°C).