8 M400-NRS

Item Number: 0191094
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$28,434.75
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Ames
  • Nominal Size: 8 inch
  • Weight: 675.0 lb
  • Housing & Sleeve Material: 304 (Schedule 40) Stainless Steel
  • Shutoff Valves: Non-Rising Stem (NRS) Gate Valves
  • Design: Extremely Compact, 70% Lighter
  • Check Modules: Link Type, Torsion Spring
  • Lead Free construction
  • Bottom Mounted Stainless Steel Relief Valve
  • Installation: Approved for Horizontal

Description

This Maxim™ 8 inch lead free reduced pressure zone backflow preventer assembly (SKU 0191094) prevents reverse flow of non-potable water and fire protection substances into potable water supplies. Designed with 304 (Schedule 40) stainless steel housing, it features non-rising stem (NRS) gate valves, link check modules, and a bottom mounted stainless steel relief valve. Its compact and 70% lighter design simplifies installation, approved for horizontal mounting. Ideal for continuous pressure piping and health hazard cross-connections, ensuring compliance with national plumbing codes.

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Connections

  • This assembly features flanged connections at the inlet and outlet of its NRS gate valves for connection to main piping systems.
  • Groove couplings are utilized internally for easy installation and alignment of assembly components.

Installation

This reduced pressure zone backflow preventer assembly is approved for horizontal installation. Ensure the assembly is installed in accordance with the direction of the flow arrow, and with adequate clearance for inspection, testing, and servicing.

Compatibility

This 8 inch lead free assembly is ideal for continuous pressure piping applications and at cross-connections where protection from fire protection substances, non-potable water, and other contaminants is required to safeguard the potable water supply.

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Additional Details

This Maxim™ 8 inch lead free reduced pressure zone backflow preventer assembly with NRS Shutoff Valves and Link Check Modules 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 cross-connections identified as health hazards, ensuring compliance with national plumbing codes and water authority requirements.

Key Features

  • Features a 304 (Schedule 40) stainless steel housing and sleeve for durability.
  • Equipped with replaceable check disc rubber and torsion spring check modules for ease of serviceability.
  • Extremely compact design allows for the use of small enclosures.
  • Groove couplings are included for easy installation and pipe alignment.
  • Approximately 70 percent lighter than traditional backflow preventer designs.
  • Link check modules provide the lowest pressure loss.
  • Features drip tight shutoff valves and a bottom mounted stainless steel relief valve.
  • Approved for horizontal installation when installed according to the flow arrow direction.

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
  • Brand: Maxim™ (Ames Fire & Waterworks)
  • Nominal Size: 8 inch
  • Housing & Sleeve Material: 304 (Schedule 40) Stainless Steel
  • Check Modules: Link Type, Torsion Spring
  • Check Disc Material: Replaceable Rubber
  • Shutoff Valves: Resilient Seated Gate Valves, Non-Rising Stem (NRS)
  • Relief Valve: Bottom Mounted, Stainless Steel
  • Features: Lead Free, Extremely Compact Design, 70% Lighter than Traditional Designs, Lowest Pressure Loss (Link Check Modules), Drip Tight Shutoff Valves
  • Installation: Approved for Horizontal (when installed per flow arrow)

Certificates & Approvals

FAQs

What is the primary function of this backflow preventer assembly?

This Maxim™ 8 inch 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 due to backsiphonage or backpressure. It ensures compliance with national plumbing codes.

What material is the housing made from?

The housing and sleeve of this assembly are constructed from durable 304 (Schedule 40) stainless steel, offering robust performance and longevity.

Can this assembly be installed horizontally?

Yes, this backflow preventer assembly is approved for horizontal installation. It is crucial to ensure it is installed in accordance with the direction of the flow arrow for proper operation.

What type of shutoff valves are included?

The assembly features resilient seated gate valves with a non-rising stem (NRS) design, providing drip-tight shutoff capabilities.

What are the benefits of the link check modules?

The link check modules provide the lowest pressure loss within the system and contribute to the assembly's compact design. They also feature replaceable check disc rubber for ease of serviceability.

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