8 4000SS-NRS-FS

Item Number: F0690469
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$27,067.50
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Ames
  • Size: 8 inch
  • Weight: 732.0 lb
  • Type: Reduced Pressure Zone Assembly
  • Shutoff Valves: Non-Rising Stem (NRS)
  • Body Material: Stainless Steel
  • Maximum Working Pressure: 175 PSI
  • Lead Free: Less than 0.25% lead by weight
  • Flood Sensor: SentryPlus Alert technology included
  • Easy maintenance with single access cover

Description

This 8 inch Lead Free Ames 4000SS-NRS-FS Reduced Pressure Zone backflow preventer assembly protects potable water supplies from health hazard cross-connections. It features a lightweight stainless steel body, non-rising stem shutoff valves, and a patented cam-check assembly for maximum flow. The integrated SentryPlus Alert flood sensor detects continuous relief valve discharge, with optional connection kits enabling alerts via BMS, cellular, or Wi-Fi. Designed for easy maintenance and retrofitting, this assembly operates up to 175 PSI and is ASSE 1013 and CSA B64.5 approved.

Help Me Connect

Flood Sensor Connectivity

  • The integrated flood sensor requires an add-on connection kit to become active and enable communication.
  • Connection kit options include those compatible with Building Management Systems (BMS), cellular communication, and the Sensor Control Monitor.
  • The Sensor Control Monitor enables integration with Building Automation Systems (BAS) via RS-485 Modbus or the Nexa platform through Wi-Fi.
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Additional Details

This 8 inch Lead Free reduced pressure zone backflow preventer assembly protects potable water supplies from backsiphonage and backpressure of hazardous materials. It is designed for continuous pressure piping applications and health hazard cross-connections.

Features

  • Stainless steel body construction provides long-term corrosion resistance and maximum strength.
  • Half the weight of competitive designs, reducing installation and shipping costs.
  • Short end-to-end dimensions for easy retrofitting.
  • Cam-check assembly provides maximum flow at low pressure drop.
  • No special tools required for servicing.
  • Compact construction allows for smaller enclosures.
  • Stainless steel relief valve with balanced rolling diaphragm eliminates sliding seals and lowers maintenance costs.
  • Resilient seated shutoff valves with non-rising stem (NRS).
  • Includes test cocks.

Flood Sensor Technology

  • Features a flood sensor with SentryPlus Alert technology to detect continuous discharge from the relief valve.
  • An add-on connection kit is required to activate the flood sensor and enable communication.
  • Compatible with BMS, cellular network communication, and the Sensor Control Monitor for integration with BAS via RS-485 Modbus or Nexa platform via Wi-Fi.
  • Use of the flood sensor does not replace the need to comply with all required instructions, codes, and regulations related to installation, operation, and maintenance, including the need to provide proper drainage in the event of a discharge.

Specifications

General

  • Size: 8 inch
  • Model: 4000SS-NRS-FS
  • Maximum Working Pressure: 175 PSI (12.1 bar)
  • Temperature Range: 33°F - 110°F (0.5°C – 43°C)
  • Shutoff Valves: Non-Rising Stem (NRS)

Materials

  • Body Material: 300 Series Stainless Steel
  • Internal Metal Parts: 300 Series Stainless Steel
  • Check Assembly Material: Noryl® with stainless steel hinge pins, cam arm, and cam bearing
  • Relief Valve Material: Stainless Steel with balanced rolling diaphragm
  • Wetted Surface Lead Content: Less than 0.25% by weight

Dimensions (Approximate)

  • End-to-End Dimension (A): 52 1/2 inches (1334 mm)
  • Weight with Gates: 571 lbs (259 kg)
  • Weight without Gates: 179 lbs (81 kg)

Certificates & Approvals

  • ASSE: 1013
  • CSA: B64.5
  • AWWA: C511-92

FAQs

What is the primary function of this backflow preventer?

This 8 inch Lead Free Reduced Pressure Zone (RPZ) assembly is designed to protect potable water supplies from contamination due to backsiphonage or backpressure from non-potable sources, such as fire protection substances or other hazardous materials.

What does "Lead Free" mean for this product?

The "Lead Free" designation indicates that the wetted surfaces of this product, which come into contact with consumable water, contain less than 0.25% lead by weight, complying with modern installation requirements.

How does the flood sensor work, and what is required to use it?

The integrated SentryPlus Alert flood sensor detects excessive water discharge from the relief valve. To activate the sensor and enable alert notifications, an add-on connection kit must be installed. Without this kit, the sensor remains a passive component.

What are the connectivity options for the flood sensor?

With an add-on connection kit, the flood sensor can integrate with Building Management Systems (BMS), cellular networks, or the Sensor Control Monitor. The Sensor Control Monitor further allows integration with Building Automation Systems (BAS) via RS-485 Modbus or the Nexa platform over Wi-Fi.

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

This backflow preventer is rated for a maximum working pressure of 175 PSI (12.1 bar) and can operate within a temperature range of 33°F to 110°F (0.5°C to 43°C).

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