2 1/2 M400-DNRS

Item Number: 0191090
1 1
$7,178.25
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Ames
  • Size: 2 1/2 inch
  • Weight: 168.0 lb
  • Type: Reduced Pressure Zone Backflow Preventer Assembly
  • Housing and Sleeve Material: 304 (Schedule 40) Stainless Steel
  • Shutoff Valves: NRS
  • Extremely compact design
  • 70% lighter than traditional designs
  • Link check modules for lowest pressure loss
  • Groove couplings for easy installation

Description

The Ames Maxim 2 1/2 inch Reduced Pressure Zone Backflow Preventer Assembly (M400-DNRS) is designed to prevent the reverse flow of fire protection substances and non-potable water into the potable water supply. This lead-free assembly features 304 (Schedule 40) stainless steel housing and NRS shutoff valves, and link check modules. Its extremely compact and lightweight design is 70% lighter than traditional models, allowing for smaller enclosures and easier installation with groove couplings. It is approved for horizontal installation and suitable for continuous pressure piping applications and cross-connections identified as health hazards.

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Installation Guidance

  • Approved for horizontal installation when installed in accordance with the direction of the flow arrow.
  • Features groove couplings for easy installation and pipe alignment.
  • Ideal for use in continuous pressure piping applications and at cross-connections posing health hazards.
  • The valve should be protected from freezing.
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Additional Details

The 2 1/2 inch Maxim Reduced Pressure Zone Backflow Preventer Assembly is designed to prevent the reverse flow of fire protection substances and non-potable water into the potable water supply.

It is suitable for continuous pressure piping applications and at cross-connections identified as health hazards.

Components

  • Stainless steel body with a quick access sleeve
  • Torsion spring check modules
  • Resilient seated gate valves with non-rising stem
  • Test cocks
  • Bottom mounted pressure relief valve

Features

  • Constructed with 304 (Schedule 40) stainless steel housing and sleeve
  • Replaceable check disc rubber
  • Extremely compact design allows for small enclosures
  • Torsion spring check modules for ease of serviceability
  • Groove couplings for easy installation and pipe alignment
  • 70 Percent lighter than traditional designs
  • Link check modules provide lowest pressure loss
  • Drip tight shutoff valves

NOTICE: Always thoroughly read all installation instructions and product safety information before beginning the installation of this product. Installation should be performed by a trained product installer.

Specifications

General

  • Type: Reduced Pressure Zone Backflow Preventer Assembly
  • Size: 2 1/2 inch
  • Brand: Maxim
  • Shutoff Valves: NRS
  • Check Modules: Link
  • Installation: Horizontal (approved with flow arrow)
  • Lead Free: Yes

Materials

  • Housing and Sleeve: 304 (Schedule 40) Stainless Steel
  • Check Disc: Replaceable Rubber
  • Relief Valve: Stainless Steel (bottom mounted)

FAQs

What is the primary purpose of this backflow preventer?

This backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and non-potable water into the potable water supply, protecting against backsiphonage and backpressure.

What material is the housing made from?

The housing and sleeve are constructed from 304 (Schedule 40) stainless steel, ensuring durability and corrosion resistance.

Can this assembly be installed horizontally?

Yes, it is approved for horizontal installation, provided it is installed in accordance with the direction of the flow arrow.

How does this backflow preventer compare in weight to traditional designs?

This Maxim assembly is approximately 70% lighter than traditional backflow preventer designs, which simplifies handling and installation.

What type of shutoff valves are included?

The assembly includes resilient seated gate valves with non-rising stems, specifically NRS shutoff valves, for reliable operation.