1 1/4 4000B

Item Number: 0436093
1 1
$1,669.50
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Estimated transit time: 2 to 5 Business Days

Brand - Ames
  • Size: 1 1/4 inch (32mm)
  • Weight: 17.45 lb
  • Body Material: Bronze
  • Maximum Pressure: 175 psi
  • Maximum Temperature: 180°F
  • Connection Type: NPT
  • Features: Single access cover, modular check construction
  • Features: Internal relief valve, replaceable seats
  • Approvals: ASSE 1013, AWWA C511-92, CSA B64.4

Description

The 1 1/4 inch AMES Series 4000B Reduced Pressure Zone Assembly is a bronze backflow preventer designed to protect drinking water supplies from contamination caused by back-siphonage or backpressure. It is suitable for health-hazard non-potable applications like irrigation, fire lines, or industrial processing. Key features include a durable bronze body, two in-line independent check valves, an intermediate relief valve, and quarter-turn ball valve shutoffs. Its compact, modular design with a single access cover ensures easy maintenance and economical repair with replaceable seats. Approved by ASSE 1013, AWWA C511-92, and CSA B64.4. Item number 0436093.
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Additional Details

This 1 1/4 inch AMES Series 4000B Reduced Pressure Zone Assembly backflow preventer is designed to protect drinking water supplies from dangerous cross-connections due to backsiphonage or backpressure.

It is ideal for health-hazard non-potable service applications such as irrigation, fire lines, or industrial processing, providing robust protection in continuous pressure piping systems.

Key Features

  • Features two in-line, independent check valves with captured springs and replaceable check seats.
  • An intermediate relief valve is included for reduced installation clearances.
  • Compact modular design with a single access cover facilitates easy maintenance and in-line repairs.
  • Constructed with a bronze body for durability.
  • Large body passages provide low pressure drop.
  • Screwdriver slotted ball valve test cocks are provided for ease of testing.
  • Replaceable seats allow for economical repair.
  • No special tools are required for servicing.

Materials

  • Body Construction: Bronze
  • Disc Material: Silicone rubber (in first and second check, and relief valve)
  • Check Seats: Replaceable polymer
  • Relief Valve Seat: Removable stainless steel
  • Cover Bolts: Stainless steel
  • Isolation Valves: Resilient seated, quarter-turn ball valves with lever handles

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 standard material product, consult your local water authority, building and plumbing codes.

Specifications

  • Body Material: Bronze
  • Connection Type: NPT
  • Nominal Size: 1 1/4 inch (32mm)
  • Maximum Operating Pressure: 175 psi (12.06 bar)
  • Maximum Operating Temperature: 180°F (75°C)
  • Valve Type: Reduced Pressure Zone Assembly
  • Shutoff Type: Quarter-turn ball valves
  • Test Cocks: Ball valve, screwdriver slotted
  • Check Valves: Two in-line, independent with captured springs
  • Seat Material: Replaceable polymer check seats, removable stainless steel relief valve seat
  • Weight: 14.62 lbs (6.6 kg)

Dimensions

  • Overall Length (A): 17 3/8 inches (441mm)
  • Height (B): 6 inches (150mm)
  • Width (C): 3 1/2 inches (89mm)
  • Depth (D): 2 1/2 inches (64mm)

Certificates & Approvals

  • ASSE Std. 1013
  • AWWA Std. C511-92
  • CSA B64.4
  • IAPMO File No. 1563
  • USC Manual 8th Edition
  • cULus Classified (for LBV models only, 3/4"-2")
  • UPC
  • Approved by Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California (models QT, U)

FAQs

What is the primary purpose of the AMES Series 4000B backflow preventer?

The primary purpose is to protect drinking water supplies from dangerous cross-connections, preventing the flow of polluted water from re-entering the potable water system due to backsiphonage or backpressure.

What are the recommended applications for this backflow preventer?

It is recommended for health-hazard non-potable service applications such as irrigation systems, fire lines, and industrial processing, providing protection in continuous pressure piping applications.

What type of connections does this assembly use?

This assembly is standardly furnished with NPT (National Pipe Taper) body connections. Optional bronze union inlet and outlet connections are also available by specifying the prefix 'U'.

Is this backflow preventer easy to maintain?

Yes, it features a compact modular design with a single access cover and top entry, making all internal components immediately accessible for ease of maintenance and in-line repairs. No special tools are required for servicing.

What is the maximum operating pressure and temperature?

The AMES Series 4000B can handle supply pressures up to 175 psi (12.06 bar) and water temperatures up to 180°F (75°C) continuously.

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