1 800M4FR-FZ

Item Number: T388015
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$527.28
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Febco
  • Size: 1 inch Female NPT inlet and outlet
  • Body Material: Bronze
  • Freeze Protection: Built-in relief valve for ice formation
  • Monitoring: Integrated freeze sensor for SentryPlus Alert® technology
  • Maximum Working Pressure: 150 psi
  • Minimum Operating Pressure: 15 psi
  • Temperature Range: 33°F to 140°F
  • Shutoffs: Tee handle quarter turn ball valves

Description

This 1 inch Watts 800M4FR-FZ bronze freeze-resistant pressure vacuum breaker backflow preventer protects potable water systems from backsiphonage of contaminated water. Its durable bronze body incorporates a unique built-in relief valve to prevent damage from ice formation by relieving internal pressure. An integrated freeze sensor works with SentryPlus Alert® technology to notify personnel of freezing conditions. Designed for continuous pressure health hazard applications like irrigation and industrial process water systems, it features 1 inch female NPT connections and operates up to 150 psi. Item number T388015.

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Installation Guidelines

  • This valve is designed for installation in a continuous pressure potable water supply system.
  • Must be installed 12 inches above the highest point of the downstream piping.
  • Install with the supply connected to the bottom and in a vertical position.
  • Allow adequate space for periodic inspection, servicing, or testing.
  • Do not install the valve in an area where freezing or spillage can cause damage.
  • Test cocks are positioned at the lowest point of the valve for winterization draining.

Freeze Sensor Activation

  • An add-on connection kit (sold separately) is required to activate the freeze sensor and enable communication.
  • Without the connection kit, the sensor is a passive component with no communication to any other device.
  • Freeze alerts can integrate with Wi-Fi networks, building management systems (BMS), and irrigation management systems (IMS) when the connection kit is used.

Additional Protection & Considerations

  • Adequate drainage/freeze protection must be provided in cold weather applications, as the built-in relief valve is not designed to provide freeze protection for the entire irrigation system.
  • Vacuum breakers are not designed, tested, or approved to protect against backpressure backflow or water hammer shock.
  • For backpressure backflow protection, consider installing a Watts 909/009 Reduced Pressure Zone backflow preventer.
  • For water hammer shock protection, install a Watts Series 15 Water Hammer Arrestor.
  • A WattsBox Insulated Enclosure can be used for additional freeze protection.
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Additional Details

This 1 inch freeze resistant pressure vacuum breaker backflow preventer helps prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. Its superior design is ideal for continuous pressure health hazard applications, such as on irrigation systems and industrial process water systems, especially where sudden freezing conditions may occur.

A WARNING: It is illegal to use this product in any plumbing system providing water for human consumption, such as drinking or dishwashing, in the United States. Before installing, consult your local water authority, building, and plumbing codes.

A WARNING: 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.

Freeze Protection & Alerts

  • Features a unique built-in relief valve that automatically relieves pressure caused by ice formation within the valve body and internal components, protecting against damage.
  • Includes an integrated freeze sensor for use with SentryPlus Alert® technology to signal facility personnel when temperatures near and reach the freezing point.
  • Freeze alerts are available with an add-on connection kit (sold separately) for Wi-Fi networks, building management systems (BMS), or irrigation management systems (IMS).

Construction & Components

  • Durable bronze body construction for long-lasting performance.
  • Utilizes a silicone rubber check valve disc, Noryl® plastic check valve seat, and stainless steel springs.
  • Features an acetal bonnet with a silicone rubber O-ring seal and a lightweight polypropylene disc float.
  • Equipped with tee handle quarter turn ball valve shutoffs for reliable control.
  • Convenient test cocks are positioned for easy testing and winterization draining.
  • Designed for easy maintenance with accessible internal parts.

Specifications

  • Brand: Watts
  • Model Series: 800M4FR
  • SKU: T388015
  • Nominal Size: 1 inch
  • Body Material: Bronze
  • Check Valve Disc Material: Silicone rubber
  • Check Valve Seat Material: Noryl® plastic
  • Spring Material: Stainless steel
  • Bonnet Material: Celcon®
  • Bonnet Seal Material: Silicone rubber O-ring
  • Disc Holder Float Material: Polypropylene
  • Shutoff Type: Tee handle quarter turn ball valves
  • Inlet/Outlet Connections: Female NPT
  • 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)

Certificates & Approvals

  • ANSI
  • IAPMO
  • USC Manual Section 10
  • ASSE 1020
  • USC-FCCCHR
  • Approved by the Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California

FAQs

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

Its primary function is to prevent backsiphonage of contaminated water into the potable water supply, making it suitable for continuous pressure health hazard applications such as irrigation and industrial systems.

How does this backflow preventer prevent freeze damage?

It features a unique built-in relief valve that automatically relieves internal pressure caused by ice formation, protecting the valve body and internal components from damage during freezing conditions.

Is the integrated freeze sensor sufficient for complete freeze protection?

No, the freeze sensor provides alerts about possible freeze events but does not prevent freezing. User action, along with adequate drainage or additional freeze protection, is required to prevent product or property damage.

What type of connections does the 1 inch 800M4FR-FZ have?

This model is equipped with 1 inch female NPT inlet and outlet connections, along with convenient tee handle quarter-turn shutoffs.

What are the installation requirements for this pressure vacuum breaker?

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