4 994-OSY-GxG-FS

Item Number: F438606
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$11,907.00
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts
  • Product Type: Reduced Pressure Zone (RPZ) Assembly
  • Weight: 300.0 lb
  • Size: 4 inch
  • Connection Type: Grooved Inlet x Grooved Outlet
  • Body Material: 300 Series Stainless Steel
  • Maximum Working Pressure: 175 PSI
  • Temperature Range: 33°F-110°F
  • Features: Integrated Flood Sensor with SentryPlus Alert
  • Certifications: AWWA C511-92, CSA B64.5, UL Classified, ASSE 1013, FM Approved

Description

The 4 inch Watts Series 994 Lead Free Reduced Pressure Zone (RPZ) Assembly is a backflow preventer designed to safeguard potable water from health hazard cross-connections. It features a compact, short lay length, stainless steel body with grooved inlet and outlet connections, and UL Classified and FM Approved OSY gate valves. An integrated flood sensor detects excessive relief valve discharge, offering proactive flood monitoring when connected with an add-on kit. Its robust stainless steel construction, bottom-mounted relief valve, and torsion spring check valves ensure durability, easy maintenance, and optimal flow at low pressure drops. Item number F438606.

Help Me Connect

This Watts Series 994 Reduced Pressure Zone Assembly features grooved inlet and outlet gate valve connections, designed for straightforward installation into piping systems with grooved couplings. The integrated flood sensor on the relief valve provides passive monitoring of water discharge. To activate advanced flood alert features and integrate with Building Management Systems (BMS), cellular networks, or the Nexa platform via Wi-Fi or RS-485 Modbus, an add-on sensor connection kit is required (sold separately).

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Additional Details

This 4 inch Watts Series 994 Lead Free Reduced Pressure Zone (RPZ) Assembly backflow preventer is designed to protect potable water supplies from health hazard cross-connections by stopping the reverse flow of liquids due to backpressure or backsiphonage. It features a short lay length stainless steel body and a flood sensor with SentryPlus Alert technology to detect excessive water discharges from the relief valve.

Its compact and modular design facilitates easy maintenance with a single access cover for in-line repairs, requiring no special tools for servicing.

Flood Detection & Alerts

  • Includes an integrated flood sensor on the relief valve to detect continuous discharge.
  • When paired with an add-on connection kit (sold separately), the sensor activates to relay alerts for potential flooding events.
  • Connection kit options include BMS, cellular communication, and the Sensor Control Monitor for integration with BAS via RS-485 Modbus or the Nexa platform via Wi-Fi.
  • An add-on connection kit is required to activate the flood sensor; without it, the sensor is a passive component that does not communicate with any other device. Ensure proper drainage is provided for any discharge.

Construction & Design

  • Stainless steel body and internal components provide long-term corrosion resistance and maximum strength, weighing half that of competitive designs to reduce installation and shipping costs.
  • Features grooved inlet and outlet gate valve connections for easy installation.
  • Outside Stem and Yoke (OSY) resilient seated gate valves are UL Classified and FM Approved.
  • Equipped with corrosive-resistant stainless steel bottom-mounted relief valve and patented torsion spring check valves.
  • The bottom-mounted relief valve reduces clearance requirements when installed against an outside wall.
  • Thermoplastic and stainless steel check valves ensure trouble-free operation and maximum flow at low pressure drop.
  • Compact construction allows for smaller enclosures.

Specifications

General

  • Product Type: Reduced Pressure Zone (RPZ) Assembly
  • Series: 994
  • Size: 4 inch
  • End Connection Type: Grooved Inlet x Grooved Outlet
  • Valve Type: Outside Stem and Yoke (OSY) Resilient Seated Gate Valves
  • Flood Sensor: Integrated
  • Lead Free: Yes (wetted surface < 0.25% lead by weight)

Materials

  • Main Valve Body: 300 Series Stainless Steel
  • Internal Metal Parts: 300 Series Stainless Steel
  • Check Assembly: Noryl®

Performance

  • Maximum Working Pressure: 175 psi (12.1 bar)
  • Temperature Range: 33°F-110°F (0.5°C-43°C) continuous

Certificates & Approvals

  • AWWA C511-92
  • CSA B64.5
  • UL Classified
  • ASSE 1013
  • FM Approved (OSY only)
  • Approved by the Foundation for Cross Connection Control & Hydraulic Research at the University of Southern California (for sizes 2 1/2" to 6")

FAQs

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

The primary purpose is to protect potable water supplies from contamination by preventing backsiphonage and backpressure of hazardous materials at cross-connections, meeting national codes and health hazard applications.

Does this backflow preventer include a flood sensor?

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

What type of connections does this 4-inch assembly feature?

This assembly features grooved inlet gate connections and grooved outlet gate connections, making it compatible with grooved piping systems.

What materials are used in the construction of the Watts Series 994 backflow preventer?

The main valve body and all internal metal parts are constructed from 300 Series stainless steel for corrosion resistance and strength. The check assembly utilizes Noryl®.

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

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

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