3 994-DOSY-FS

Item Number: F439413
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$10,764.43
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts
  • 3 inch Reduced Pressure Zone Assembly Backflow Preventer
  • Weight: 226.0 lb
  • 300 Series stainless steel body and internal parts
  • SentryPlus Alert flood sensor for discharge detection
  • Domestic OSY resilient seated gate valves
  • Maximum Working Pressure: 175 psi
  • Temperature Range: 33°F-110°F continuous
  • AWWA C511-92, CSA B64.5, ASSE 1013 certified
  • No special tools required for servicing

Description

The 3 inch Watts Series 994 Reduced Pressure Zone Assembly is a backflow preventer designed to protect potable water supplies from health hazard cross-connections. This unit prevents reverse flow caused by backpressure or backsiphonage. It features a durable 300 Series stainless steel body, domestic outside stem and yoke (OSY) shutoff valves, and a compact, short lay length design for easy installation and maintenance. A SentryPlus Alert flood sensor detects excessive relief valve discharge, enhancing system safety by enabling alerts when paired with an add-on connection kit. Item number F439413.

Help Me Connect

This Watts Series 994 Reduced Pressure Zone Assembly is equipped with domestic outside stem and yoke (OSY) flanged gate valves for connection. The integrated flood sensor can be activated by an add-on connection kit (sold separately), enabling communication with Building Management Systems (BMS), cellular networks, or the Nexa platform via Wi-Fi for alert delivery.

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Additional Details

This 3 inch reduced pressure zone assembly backflow preventer helps stop the reverse flow of liquids due to backpressure or backsiphonage, where a potential health hazard exists. Its compact modular design facilitates easy maintenance with a single access cover for in-line repairs.

Features

  • Features a flood sensor with SentryPlus Alert technology to detect continuous discharge from the relief valve.
  • An add-on sensor connection kit is available to extend flood monitoring on compatible assemblies.
  • Integrates with the Sensor Control Monitor to deliver maintenance alerts to BAS via RS-485 Modbus or the Nexa platform by Wi-Fi connectivity.
  • Stainless steel body provides long-term corrosion resistance and maximum strength.
  • Domestic outside stem and yoke (OSY) resilient seated gate valves are included.
  • Suitable for health hazard cross-connection applications.
  • No special tools required for servicing.
  • Compact construction allows for smaller enclosures and easy retrofit.
  • Bottom mounted relief valve reduces clearance requirements when installed against an outside wall.
  • Patented torsion spring check valves provide maximum flow at low pressure drop.

Construction Details

  • Consists of a short lay length, lead-free stainless steel body.
  • Includes test cocks for field testing.
  • Equipped with a corrosion-resistant stainless steel bottom-mounted relief valve.
  • Features thermoplastic and stainless steel torsion spring check valves for trouble-free operation.
  • All internal parts are accessible through a single cover, securely held by a two-bolt grooved coupling.

Specifications

  • Valve Type: Reduced Pressure Zone Assembly
  • Size: 3 Inch
  • Body Material: 300 Series stainless steel
  • Internal Metal Parts: 300 Series stainless steel
  • Main Valve Body: 300 Series stainless steel
  • Check Assembly: Noryl®
  • Shutoff Valves: Domestic Outside Stem and Yoke (OSY) resilient seated gate valves
  • Maximum Working Pressure: 175 psi (12.1 bar)
  • Temperature Range: 33°F-110°F (0.5°C - 43°C) continuous
  • Flood Sensor: Yes, with SentryPlus Alert technology
  • Flange Dimension: In accordance with AWWA Class D
  • Lead Content: Wetted surface contains less than 0.25% lead by weight

Certificates & Approvals

  • Standard: AWWA C511-92
  • Standard: CSA B64.5
  • Standard: ASSE 1013
  • Approval: UL Classified (OSY only, 2.5"-10")
  • Approval: FM Approved (OSY only, 2.5"-10")
  • Approval: Approved by the Foundation for Cross Connection Control & Hydraulic Research (University of Southern California, sizes 2.5" to 6")

FAQs

What is the primary function of the Watts Series 994 Reduced Pressure Zone Assembly?

This assembly is designed to protect potable water supplies from contamination due to backpressure or backsiphonage from health hazard cross-connections.

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

The main valve body and all internal metal parts are constructed from 300 Series stainless steel, providing long-term corrosion resistance. The check assembly uses Noryl®.

Does this assembly include a flood sensor?

Yes, it includes a flood sensor with SentryPlus Alert technology to detect excessive water discharges from the relief valve. An add-on connection kit is required to activate its communication features.

What are the advantages of its compact design and construction?

The compact design with a short lay length allows for easier installation in smaller enclosures and facilitates simple in-line repairs, as no special tools are required for servicing. The stainless steel body is also half the weight of competitive designs.

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

The Watts Series 994 has a maximum continuous working pressure of 175 psi (12.1 bar) and operates within a temperature range of 33°F-110°F (0.5°C - 43°C).

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