1 1/2 800M4FR-FZ

Item Number: T388017
1 1
$1,305.76
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts
  • Product Type: Pressure Vacuum Breaker
  • Size: 1 1/2 inch
  • Body Material: Bronze
  • Connection Type: Female NPT inlet and outlet
  • Maximum Working Pressure: 150 psi
  • Temperature Range: 33°F to 140°F
  • Features: Built-in freeze relief valve
  • Includes: Freeze sensor for SentryPlus Alert® technology

Description

The Watts 1 1/2 inch 800M4FR-FZ is a freeze-resistant pressure vacuum breaker designed to prevent backsiphonage of contaminated water into potable water supplies. This bronze backflow preventer features a built-in relief valve to mitigate pressure from ice formation and includes a freeze sensor for SentryPlus Alert® technology, signaling personnel about freezing conditions. With female NPT inlet and outlet connections and lever handle shutoffs, it's suitable for continuous pressure health hazard applications like irrigation and industrial systems. It offers easy maintenance with internal test cocks for winterization draining and a maximum working pressure of 150 psi.

Help Me Connect

This 1 1/2 inch Watts 800M4FR-FZ backflow preventer features Female NPT inlet and outlet connections for direct integration into your plumbing system.

It is designed for installation in a continuous pressure potable water supply system and must be installed 12 inches above the highest point of the downstream piping in a vertical position with the supply connected to the bottom.

The integrated freeze sensor is compatible with Watts SentryPlus Alert® technology. An add-on connection kit (sold separately) is required to activate the sensor for communication with Wi-Fi networks, building management systems (BMS), or irrigation management systems (IMS) to provide alerts for low and freezing temperatures.

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Additional Details

This 1 1/2 inch Watts 800M4FR-FZ Freeze-Resistant Pressure Vacuum Breaker (PVB) backflow preventer is designed to prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It is ideal for continuous pressure health hazard applications susceptible to freezing conditions, such as irrigation systems and industrial process water systems.

Features

  • Unique built-in relief valve relieves pressure caused by ice formation within the assembly.
  • Includes a freeze sensor for use with Watts SentryPlus Alert® technology to signal facility personnel when temperature nears and reaches the freezing point.
  • Freeze alerts feature available with an add-on connection kit (sold separately) for Wi-Fi networks, building management systems (BMS), and irrigation management systems (IMS).
  • Bronze body construction for durability.
  • Female NPT inlet and outlet with lever handle shutoffs (quarter-turn ball valves).
  • Easy maintenance of internal parts with no special tools required for servicing.
  • Test cocks positioned for easy testing and winterization draining.
  • Compact, space-saving design.

Internal Components

  • Silicone rubber check valve disc.
  • Replaceable plastic check valve seat.
  • Stainless steel springs.
  • Bonnet with silicone rubber O-ring seal.
  • Lightweight plastic disc float.

The freeze sensor solely provides alerts about a possible freeze event and 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: Bronze
  • Product Size: 1 1/2 inch
  • Connections: Female NPT inlet and outlet
  • Maximum Working Pressure: 150 psi (10.3 bar)
  • Minimum Operating Pressure: 15 psi (55 kPa)
  • Temperature Range: 33°F to 140°F (1°C to 60°C)
  • Check Valve Disc: Silicone rubber
  • Check Valve Seat: Noryl® plastic
  • Springs: Stainless steel
  • Bonnet: Celcon®
  • Bonnet Seal: Silicone rubber O-ring
  • Shutoff Type: Lever handles, quarter-turn ball valve

Certificates & Approvals

  • ANSI
  • IAPMO
  • USC Manual Section 10
  • ASSE 1020
  • USC-FCCCHR

FAQs

What is the primary purpose of the Watts 800M4FR-FZ?

The primary purpose is to prevent backsiphonage of contaminated water from entering the potable water supply, especially in continuous pressure systems susceptible to freezing. It acts as a protective barrier in health hazard applications.

How does this device protect against freezing?

It features a unique built-in relief valve that relieves pressure caused by ice formation within the valve, protecting internal components. Additionally, it includes a freeze sensor that works with Watts SentryPlus Alert® technology to warn personnel of freezing temperatures.

What are the connection types and sizes for this backflow preventer?

This 1 1/2 inch backflow preventer features female NPT (National Pipe Taper) threaded inlet and outlet connections, allowing for straightforward integration into your plumbing system.

Is the freeze sensor included with the unit capable of wireless alerts?

The freeze sensor is included, but an add-on connection kit (sold separately) is required to activate its communication capabilities for Wi-Fi networks, building management systems (BMS), or irrigation management systems (IMS) to send alerts.

What are the recommended installation requirements for this PVB?

This valve must be installed in a vertical position with the supply connected to the bottom, at least 12 inches above the highest point of the downstream piping, and in a continuous pressure potable water supply system.