6 994-NRS-FS

Item Number: F438056
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$16,663.80
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts
  • Size: 6 inch
  • Weight: 380.0 lb
  • Body Material: 300 Series Stainless Steel
  • Shutoff Type: Non-Rising Stem (NRS) Gate Valves
  • Integrated Flood Sensor with SentryPlus Alert® Technology
  • Maximum Working Pressure: 175 PSI
  • Temperature Range: 33°F-110°F
  • Lightweight, short lay length design for easy installation
  • Approved by AWWA, CSA B64.5, UL, and FM

Description

This 6-inch Lead Free Watts Series 994 Reduced Pressure Zone Assembly Backflow Preventer protects potable water supplies from health hazard cross-connections. Featuring a lightweight, short lay length stainless steel body and non-rising stem resilient seated gate valves, it offers easy installation and maintenance. An integrated SentryPlus Alert® flood sensor detects excessive relief valve discharge, requiring an add-on connection kit for active alerts via BMS, cellular, or Wi-Fi. It is approved by AWWA, CSA B64.5, UL Classified, and FM, with a maximum working pressure of 175 PSI and temperature range of 33°F-110°F. Item number F438056.

Help Me Connect

Flood Sensor Connectivity

  • This backflow preventer includes a passive flood sensor. To activate the flood alert feature, an add-on sensor connection kit is required.
  • Connection kit options allow for compatibility with Building Management Systems (BMS) and cellular communication.
  • The sensor can also integrate with a Sensor Control Monitor, enabling connectivity to Building Automation Systems (BAS) via RS-485 Modbus or the Nexa® platform through Wi-Fi.
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Additional Details

The 6 inch Lead Free Watts Series 994 Reduced Pressure Zone Assembly Backflow Preventer is designed to protect potable water supplies from health hazard cross-connections where reverse flow due to backpressure or backsiphonage may occur.

This assembly features a compact, modular design for easy in-line maintenance and includes an integrated flood sensor with SentryPlus Alert® technology for detecting excessive water discharges from the relief valve.

Construction & Design

  • Features a short lay length, lightweight stainless steel body that is half the weight of competitive designs, reducing installation and shipping costs.
  • Equipped with corrosion resistant stainless steel relief valve and patented torsion spring check valves for maximum flow at low pressure drop.
  • Thermoplastic and stainless steel check valves ensure trouble-free operation.
  • Includes non-rising stem resilient seated gate valves.
  • A bottom mounted relief valve reduces clearance requirements, ideal for installations against an outside wall.
  • Compact construction allows for smaller enclosures and requires no special tools for servicing.

Flood Detection & Alerting

  • Integrated flood sensor with SentryPlus Alert® technology detects continuous discharge from the relief valve.
  • To activate flood alerts, an add-on sensor connection kit is required, compatible with BMS, cellular communication, and the Sensor Control Monitor for integration with BAS via RS-485 Modbus or Nexa® platform through Wi-Fi.

Specifications

  • Product Type: Reduced Pressure Zone Assembly Backflow Preventer
  • Size: 6 inch
  • Body Material: 300 Series stainless steel
  • Main Valve Body Material: 300 Series stainless steel
  • Check Assembly Material: Noryl®
  • Shutoff Type: Non-Rising Stem (NRS) resilient seated gate valves
  • Lay Length: Short
  • Flood Sensor: Integrated (requires connection kit for active alerts)
  • Temperature Range: 33°F-110°F (0.5°C - 43°C)
  • Maximum Working Pressure: 175 psi (12.1 bar)
  • Flange Dimension: In accordance with AWWA Class D

Certificates & Approvals

  • AWWA C511-92
  • CSA B64.5
  • UL Classified
  • FM Approved

FAQs

What is the primary function of the Watts Series 994 Backflow Preventer?

The Watts Series 994 Reduced Pressure Zone Assembly is designed to protect potable water supplies from health hazard cross-connections, preventing reverse flow of contaminated liquids due to backpressure or backsiphonage.

Is the integrated flood sensor active immediately upon installation?

No, the integrated flood sensor is a passive component. An add-on connection kit is required to activate the flood alert feature and enable communication with other devices.

What type of shutoff valves does this assembly use?

This assembly features non-rising stem (NRS) resilient seated gate valves, as indicated by the "NRS" in the product name.

What is the maximum operating pressure and temperature for this backflow preventer?

This backflow preventer has a maximum working pressure of 175 psi (12.1 bar) and operates within a temperature range of 33°F-110°F (0.5°C - 43°C).

Is this product suitable for outdoor installation?

Yes, its stainless steel construction provides long-term corrosion resistance, and the bottom-mounted relief valve reduces clearance requirements, making it suitable for installations against an outside wall.

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