3/4 4000B-M3

Item Number: 0436097
1 1
$902.25
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Ames
  • Size: 3/4 inch (20mm)
  • Weight: 11.0 lb
  • Body Material: Bronze
  • Max Working Pressure: 175 PSI
  • Max Water Temperature: 180°F
  • Shutoff Type: Quarter Turn Ball Valves with Tee Handles
  • End Connections: NPT
  • Certified: ASSE 1013, AWWA C511, CSA B64.4
  • Easy maintenance with single access cover and modular checks

Description

The Ames 3/4 inch 4000B Series Reduced Pressure Zone Backflow Preventer Assembly provides critical protection for potable water supplies against dangerous cross-connections, preventing backflow due to backsiphonage or backpressure. Constructed with a durable bronze body, it features quarter-turn ball valve shutoffs with tee handles, NPT end connections, and an internal relief valve. Its modular design allows for easy maintenance with a single access cover and replaceable seats for economical repair. Approved to ASSE 1013, AWWA C511, and CSA B64.4, this assembly supports continuous pressure up to 175 PSI and temperatures up to 180°F for irrigation, fire line, and industrial processing. Item 0436097.

Help Me Connect

Connections

  • The NPT end connections (National Pipe Taper) are designed for threaded pipe installations. Ensure compatible NPT male threads are used for connection.
  • The assembly is equipped with quarter turn ball valve shutoffs for easy isolation during maintenance or service.

Installation Context

This reduced pressure zone assembly is installed at potential health hazard locations to prevent backflow into drinking water supplies from non-potable sources. It is suitable for continuous pressure piping applications. Always consult local plumbing codes and authorities before installation to ensure compliance.

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Additional Details

This 3/4 inch Ames Fire & Waterworks 4000B Series Reduced Pressure Zone (RPZ) backflow preventer assembly is designed to protect drinking water supplies from dangerous cross-connections. It prevents backflow of polluted water into the potable water supply due to both backsiphonage and backpressure.

The compact modular design makes it ideal for health-hazard non-potable service applications such as irrigation, fire lines, or industrial processing, allowing for easy in-line maintenance without special tools.

Features

  • Bronze body construction for durability.
  • Quarter turn ball valve shutoffs with tee handles for isolation.
  • NPT end connections for standard installations.
  • Two in-line independent check valves and an intermediate internal relief valve.
  • Replaceable check seats and a removable stainless steel relief valve seat for economical repair.
  • Single access cover and modular check construction for ease of maintenance and top-entry access to all internals.
  • Screwdriver slotted ball valve test cocks for easy testing.
  • Large body passages provide low pressure drop.
  • Compact, space-saving design with reduced installation clearances.
  • Captured springs ensure safe maintenance.
  • No special tools required for servicing.

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. Always consult your local water authority, building, and plumbing codes before installation.

Specifications

  • Product Type: Reduced Pressure Zone Backflow Preventer
  • Series: 4000B
  • Size: 3/4 inch (20mm)
  • Body Material: Bronze
  • Check Disc Material: Silicone Rubber
  • Check Seat Material: Replaceable Polymer
  • Relief Valve Seat Material: Removable Stainless Steel
  • Cover Bolt Material: Stainless Steel
  • Shutoff Type: Quarter Turn Ball Valves with Tee Handles
  • End Connections: NPT
  • Maximum Working Pressure: 175 PSI (12.06 bar)
  • Maximum Water Temperature: 180°F (75°C)

Certifications and Standards

  • ASSE Standard: 1013
  • AWWA Standard: C511-92
  • CSA Standard: B64.4
  • USC Manual: 8th Edition
  • IAPMO File No.: 1563
  • Approved by: Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California (Models QT, U)

Dimensions (Approximate)

  • Length (A): 10 3/4 inches (273 mm)
  • Width (B): 5 inches (127 mm)
  • Height (C): 3 1/2 inches (89 mm)
  • Depth (D): 1 1/2 inches (38 mm)
  • Weight: 5.75 lbs (2.6 kg)

FAQs

What is the primary purpose of this backflow preventer?

This Ames 4000B Series Reduced Pressure Zone (RPZ) backflow preventer is designed to protect potable drinking water supplies from contamination by preventing the backflow of polluted water from cross-connections due to backsiphonage or backpressure.

What materials are used in the construction of this backflow preventer?

The assembly features a durable bronze body. It utilizes silicone rubber for the check and relief valve discs, replaceable polymer for the check seats, and a removable stainless steel seat for the relief valve. Stainless steel bolts secure the access cover.

What are the key maintenance features of the 4000B-M3?

It boasts a single access cover and modular check construction, allowing for top-entry access to all internal components. This design, along with captured springs and replaceable seats, makes maintenance easy and economical, often without requiring special tools.

What are the pressure and temperature limits for this device?

This backflow preventer is suitable for supply pressures up to 175 PSI (12.06 bar) and can continuously handle water temperatures up to 180°F (75°C).

What certifications does this backflow preventer hold?

It meets the requirements of ASSE Std. 1013, AWWA Std. C511, CSA B64.4, and the USC Manual 8th Edition. It is also approved by the Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California.

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