10 M400-NRS

Item Number: 0191095
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$42,743.24
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Ames
  • Nominal Size: 10 inch
  • Weight: 924.0 lb
  • Product Type: Reduced Pressure Zone Backflow Preventer
  • Housing Material: 304 (Schedule 40) Stainless Steel
  • Shutoff Valves: NRS (Non-Rising Stem) Gate Valves
  • Weight Reduction: 70 percent lighter than traditional designs
  • Check Modules: Torsion spring for easy serviceability
  • Connections: Groove couplings for pipe alignment
  • Features: Drip tight shutoff valves and bottom mounted stainless steel relief valve

Description

This 10 inch Ames Maxim lead free reduced pressure zone backflow preventer assembly prevents reverse flow of non-potable water and fire protection substances into the potable supply. Constructed from 304 (Schedule 40) stainless steel with NRS shutoff gate valves, it is 70% lighter and more compact than traditional designs. Its torsion spring check modules offer easy serviceability, and groove couplings ensure straightforward installation. Ideal for continuous pressure piping and cross-connection health hazards, it's approved for horizontal installation. The design includes link check modules for low pressure loss and a bottom mounted stainless steel relief valve.

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Connections

  • This backflow preventer assembly features groove couplings designed for easy installation and precise pipe alignment.
  • For proper operation, the assembly must be installed horizontally and oriented so that the water flow matches the direction indicated by the flow arrow.

Installation Environment

  • Ensure adequate clearance is maintained around the valve for future inspection, testing, and servicing. A minimum of 12 inches of clearance is required between the lowest part of the assembly and the floor or grade.
  • The entire valve should be protected from freezing to prevent damage.
  • To manage normal discharge and nuisance spitting, an Ames air gap fitting and a fabricated indirect waste line can be used, requiring floor drains of the same size for excessive discharge.
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Additional Details

This Maxim™ 10 inch lead free reduced pressure zone backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and water of non-potable quality from being pumped or siphoned into the potable water supply.

It protects against backsiphonage and backpressure in accordance with national plumbing codes and water authority requirements, making it ideal for continuous pressure piping applications and at cross-connections identified as health hazards.

Design & Construction

  • Features a 304 (Schedule 40) stainless steel housing and sleeve for durability.
  • Equipped with NRS (Non-Rising Stem) shutoff gate valves for reliable control.
  • Includes torsion spring check modules for ease of serviceability and replaceable check disc rubber.
  • Extremely compact design allows for use in smaller enclosures.
  • 70 percent lighter than traditional backflow preventer designs.
  • Groove couplings facilitate easy installation and pipe alignment.
  • Link check modules provide the lowest pressure loss.
  • Drip tight shutoff valves ensure secure closure.
  • Comes with a bottom mounted stainless steel relief valve and test cocks.

Installation Considerations

  • Approved for horizontal installation when installed in accordance with the direction of the flow arrow.
  • Requires adequate clearance around the valve for inspection, testing, and servicing.
  • A 12 inch minimum clearance is required between the lower portion of the assembly and the floor or grade.
  • The valve assembly should be protected from freezing.
  • Normal discharge and nuisance spitting can be accommodated by using an Ames air gap fitting and a fabricated indirect waste line, with floor drains of the same size required for excessive discharge.

NOTICE: The information contained herein is not intended to replace the full product installation and safety information available or the experience of a trained product installer. You are required to thoroughly read all installation instructions and product safety information before beginning the installation of this product.

Specifications

  • Product Type: Reduced Pressure Zone Backflow Preventer Assembly
  • Nominal Size: 10 inch
  • Housing Material: 304 (Schedule 40) Stainless Steel
  • Sleeve Material: 304 (Schedule 40) Stainless Steel
  • Shutoff Valve Type: NRS (Non-Rising Stem) Gate Valves
  • Check Modules: Torsion Spring, Link Check
  • Relief Valve: Bottom Mounted, Stainless Steel
  • Connections: Groove Couplings
  • Design Feature: Lead Free
  • Weight Reduction: 70 percent lighter than traditional designs

Dimensions (10 inch / 250 mm)

  • A (Total Length): 13 in (330 mm)
  • B: 6 1/2 in (165 mm)
  • C: 12 in (305 mm)
  • D (Total Height): 26 1/2 in (673 mm)
  • E: 6 3/4 in (171 mm)
  • F: 10 1/4 in (260 mm)

FAQs

What type of backflow preventer is this product?

This is a Maxim™ 10 inch lead free reduced pressure zone (RPZ) backflow preventer assembly, designed to prevent reverse flow of non-potable water into potable water supplies.

What materials are used for the main body components?

The housing and sleeve of this assembly are constructed from durable 304 (Schedule 40) stainless steel.

What type of shutoff valves are included with this assembly?

This assembly is equipped with NRS (Non-Rising Stem) gate shutoff valves for reliable flow control.

Can this backflow preventer be installed vertically?

No, this assembly is approved only for horizontal installation. It must be installed in accordance with the direction of the flow arrow for proper operation.

What are the main advantages of this backflow preventer's design?

Its design offers an extremely compact size, is 70 percent lighter than traditional designs, features torsion spring check modules for easy serviceability, and includes link check modules for the lowest pressure loss.

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