8 M200-NRS

Item Number: 0191016
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$25,023.01
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Ames
  • Size: 8 inch
  • Weight: 672.0 lb
  • Body Material: 304 Stainless Steel
  • Shutoff Valves: Non-rising stem (NRS) gate valves
  • Maximum Operating Pressure: 175 PSI
  • Lead Free: Wetted surfaces <0.25% lead
  • Installation: Horizontal, Vertical, or N Pattern
  • Check Valves: Patented Tri-Link design for lowest pressure loss
  • Serviceability: No special tools required

Description

The Maxim 8 inch Lead Free Double Check Valve Backflow Preventer Assembly with NRS shutoff valves prevents non-potable water from entering the potable water supply. Ideal for non-health hazard cross-connections like high-flow fire systems, it protects against backsiphonage and backpressure. Featuring a compact 304 stainless steel housing, patented Tri-Link check modules for minimal pressure loss, and grooved end connections, this assembly ensures easy installation and serviceability. It is rated for a maximum working pressure of 175 PSI and is approved for horizontal, vertical, or N pattern installations. Wetted surfaces contain less than 0.25% lead.

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Installation & Connections

  • This double check valve assembly is designed for installation in horizontal, vertical, or N pattern configurations, as indicated by the flow arrow on the assembly.
  • The housing is equipped with groove end connections, allowing for integral pipeline adjustment and secure attachment to your existing piping system.
  • The integral non-rising stem (NRS) gate valves serve as shutoff valves for isolation during maintenance or testing.
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Additional Details

This Maxim 8 inch lead free double check valve backflow preventer assembly is designed to prevent the reverse flow of non-potable water into the potable water supply system.

It is ideal for protection at cross-connections identified as non-health hazards, such as on high flow fire systems and other contaminants found at the service line entrance, due to backsiphonage and/or backpressure.

Construction & Features

  • Features an extremely compact design, approximately 70% lighter than traditional designs
  • Housing and sleeve are constructed from 304 (Schedule 40) stainless steel pipe with groove end connections
  • Includes two independently operating Tri-Link check valves that provide the lowest pressure loss and drip tight closure
  • Non-rising stem (NRS) resilient seated gate valves serve as the shutoff valves
  • Equipped with four lead free bronze test cocks for easy testing
  • Designed for unmatched ease of serviceability; check modules are removable and serviceable without the use of special tools
  • Approved for horizontal, vertical or N Pattern installations
  • Wetted surfaces of this product contacted by consumable water contain less than 0.25% of lead by weight

Specifications

  • Product Type: Double Check Valve Assembly
  • Brand: Maxim (Ames Fire & Waterworks)
  • Size: 8 inch
  • Shutoff Valve Type: Non-Rising Stem (NRS) Resilient Seated Gate Valves
  • Maximum Working Pressure: 175 PSI (12.06 bar)
  • Temperature Range: 33°F - 110°F (0.5°C – 43°C)
  • Installation Orientation: Horizontal, Vertical, or N Pattern
  • Wetted Surface Lead Content: Less than 0.25%

Materials

  • Housing & Sleeve: 304 (Schedule 40) Stainless Steel
  • Elastomers: EPDM, Silicone, Buna 'N'
  • Check Modules: Noryl®, Stainless Steel (Tri-Link Checks)
  • Check Discs: Reversible Silicone or EPDM
  • Test Cocks: Lead Free* Bronze Body
  • Pins & Fasteners: 300 Series Stainless Steel
  • Springs: Stainless Steel

Certificates & Approvals

  • ASSE 1015
  • AWWA C510-97
  • CSA B64.5
  • UL Listed
  • FM Approved
  • NSF/ANSI 61-G Certified
  • Approved by the Foundation for Cross-Connection Control and Hydraulic Research at The University of Southern California (FCCCHR-USC)

FAQs

What is the primary purpose of this backflow preventer?

This Maxim 8 inch double check valve backflow preventer assembly is designed to prevent non-potable water from entering the potable water supply system. It is used in non-health hazard applications, such as high-flow fire systems, to protect against backsiphonage and backpressure.

What type of shutoff valves does this assembly include?

The assembly is equipped with non-rising stem (NRS) resilient seated gate valves. These shutoff valves are integral to the unit for isolating the system.

What is the maximum operating pressure and temperature range for this device?

This double check valve assembly has a maximum working pressure of 175 PSI (12.06 bar). It operates within a temperature range of 33°F to 110°F (0.5°C to 43°C).

Can this backflow preventer be installed in any orientation?

Yes, it is approved for horizontal, vertical, or N pattern installations. Always follow the direction of the flow arrow on the assembly for proper installation.

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

The housing and sleeve are made from 304 (Schedule 40) stainless steel. It also features EPDM, Silicone, and Buna 'N' elastomers, lead-free bronze test cocks, and stainless steel pins, fasteners, and springs.

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