8 C400N-NRS

Item Number: 0191298
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$24,205.25
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: 667.0 lb
  • Lead Free Construction: Yes
  • Housing Material: Type 304 Stainless Steel
  • Shutoff Type: Non-Rising Stem (NRS) Gate Valves
  • Maximum Working Pressure: 175 psi
  • Temperature Range: 33°F - 140°F
  • 70% lighter than traditional designs
  • Flood sensor for discharge detection

Description

This 8 inch Colt C400N Series Reduced Pressure Zone Backflow Preventer Assembly protects potable water systems from contamination caused by backsiphonage and backpressure. Featuring Type 304 stainless steel construction and non-rising stem (NRS) gate valves, it is designed for health hazard applications and continuous pressure piping. The unit is 70% lighter and more compact than traditional models, offering unmatched ease of serviceability and lowest pressure loss through patented link check modules. It is approved for horizontal N-pattern installation and includes a passive flood sensor for discharge detection. Item number 0191298.

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Installation Guidance

  • This 8 inch Colt C400N-NRS Reduced Pressure Zone Assembly is designed for horizontal N-pattern installation. Ensure adequate space for access and maintenance.
  • Connection to the pipeline is facilitated by groove fittings, allowing for integral pipeline adjustment.
  • The flood sensor on the relief valve requires an add-on connection kit to become active and communicate alerts. Without this kit, the sensor is passive.
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Additional Details

The Colt™ 8 inch lead free reduced pressure zone backflow preventer assembly protects potable water systems from contamination due to backsiphonage and backpressure, suitable for health hazard applications and continuous pressure piping.

This assembly features a compact, lightweight design with non-rising stem (NRS) shutoffs and torsion spring link check modules for easy servicing.

Construction & Design

  • Features a Type 304 (Schedule 40) stainless steel housing and sleeve for durability.
  • 70% lighter than traditional backflow preventer designs.
  • Extremely compact design allows for installation in smaller enclosures.
  • Groove fittings for integral pipeline adjustment and easy installation.
  • Configured for horizontal N-pattern installation.
  • Includes a bottom mounted stainless steel relief valve.
  • Lead Free* construction ensures wetted surfaces contain less than 0.25% of lead by weight.

Performance & Serviceability

  • Patented link check modules provide the lowest pressure loss.
  • Unmatched ease of serviceability with torsion spring check modules.
  • Drip tight shutoff valves prevent reverse flow.
  • Replaceable check disc rubber for extended product life.

Flood Detection

  • Equipped with a flood sensor on the relief valve to detect excessive water discharges.
  • NOTICE: An add-on connection kit is required to activate the flood sensor for communication; without it, the sensor is passive. Watts® is not responsible for alert failures due to connectivity issues.

Specifications

General

  • Product Type: Reduced Pressure Zone Backflow Preventer Assembly
  • Series: C400
  • Nominal Size: 8 inch
  • Shutoff Type: Non-Rising Stem (NRS) Gate Valves
  • Configuration: Horizontal N-Pattern
  • Lead Free: Yes (Wetted surface contains < 0.25% lead)

Materials

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

Performance

  • Maximum Working Pressure: 175 psi (12.1 bar)
  • Temperature Range: 33°F - 140°F (0.5°C - 60°C)

Dimensions & Weight (8 inch NRS)

  • Length (A): 49 3/4 inch (1264 mm)
  • Height (C, NRS): 37 3/4 inch (959 mm)
  • Inlet/Outlet Center to Center (H): 54 1/8 inch (1375 mm)
  • Weight: 483 lb (219 kg)

Certificates & Approvals

  • Approved By: Foundation for Cross-Connection Control and Hydraulic Research at The University of Southern California (FCCCHR-USC)
  • AWWA C511-97
  • ASSE 1013
  • CSA B64.4
  • NSF Certified to NSF/ANSI 61-G

FAQs

What is the primary purpose of this 8 inch Colt C400N-NRS backflow preventer?

Its primary purpose is to protect potable water systems from contamination by preventing the reverse flow of non-potable substances due to backsiphonage or backpressure, in accordance with national plumbing codes.

What type of shutoff valves does this C400N model use?

This C400N model is equipped with non-rising stem (NRS) resilient seated gate valves, which are known for their compact design.

What materials are used for the main housing and internal components?

The housing and sleeve are constructed from durable Type 304 (Schedule 40) stainless steel. Internal components like link checks use Noryl® and stainless steel, while check discs are reversible silicone or EPDM.

Does this backflow preventer include a flood detection feature?

Yes, it includes a flood sensor on the relief valve to detect excessive water discharges. However, an add-on connection kit is required to activate the sensor for communication.

What is the maximum working pressure and temperature range for this assembly?

This assembly has a maximum working pressure of 175 psi (12.1 bar) and operates within a temperature range of 33°F to 140°F (0.5°C to 60°C).

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