8 994-OSY-FS

Item Number: F438065
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$30,984.75
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts
  • Size: 8 inch
  • Weight: 752.0 lb
  • Lead Free: Yes
  • Body Material: 300 Series Stainless Steel
  • Shutoff Valves: OSY resilient seated gate valves
  • Flood Detection: SentryPlus Alert® technology sensor
  • Maximum Operating Pressure: 175 psi
  • Compact construction for smaller enclosures
  • No special tools required for servicing

Description

The Watts Series 994 8 inch lead-free reduced pressure zone (RPZ) backflow preventer with OSY shutoffs protects potable water from health hazard cross-connections. Featuring a durable stainless steel body and compact design, it ensures corrosion resistance and easy maintenance. A SentryPlus Alert® flood sensor detects excessive water discharge, sending alerts via optional connection kits for BMS, cellular, Modbus, or Wi-Fi. This assembly includes outside stem and yoke resilient seated gate valves and is UL Classified, FM Approved, and ASSE 1013 compliant. Item number F438065.

Help Me Connect

This 8 inch reduced pressure zone assembly features flanged connections for installation, complying with AWWA Class D flange dimensions. The flood sensor requires an add-on connection kit for activation, enabling communication via BMS, cellular communication, RS-485 Modbus, or Wi-Fi for alerts.

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Additional Details

This 8 inch lead free reduced pressure zone assembly backflow preventer is designed to prevent the reverse flow of liquids due to backpressure or backsiphonage, where potential health hazards exist. Its compact modular design facilitates easy maintenance with a single access cover for in-line repairs.

Construction & Design

  • Features a short lay length stainless steel body, reducing installation and shipping costs.
  • Equipped with test cocks and a corrosion-resistant stainless steel bottom-mounted relief valve.
  • Includes torsion spring check valves for maximum flow at low pressure drop.
  • Utilizes UL Classified and FM Approved outside stem and yoke (OSY) resilient seated gate valves.
  • No special tools are required for servicing, and its compact construction allows for smaller enclosures.
  • Bottom mounted relief valve reduces clearance requirements when installed against an outside wall.

Flood Detection & Alerting

  • Contains a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve.
  • When paired with an add-on connection kit, the sensor is activated to relay alerts for potential flooding events.
  • Connection kit options include BMS, cellular communication, and the Sensor Control Monitor which enables integration with BAS via RS-485 Modbus or the Nexa® platform through Wi-Fi.

Specifications

  • Size: 8 inch
  • Valve Type: Reduced Pressure Zone Assembly
  • Shutoff Valves: Outside Stem and Yoke (OSY) resilient seated gate valves
  • Body Material: 300 Series Stainless Steel
  • Internal Metal Parts: 300 Series Stainless Steel
  • Check Assembly Material: Noryl®
  • Temperature Range: 33°F-110°F (0.5°C - 43°C) continuous
  • Maximum Working Pressure: 175 psi (12.1 bar)

Certificates & Approvals

  • AWWA: C511-92
  • CSA: B64.5
  • UL: Classified (OSY only, 2.5"-10")
  • FM: Approved (OSY only, 2.5"-10")
  • ASSE: 1013

FAQs

What is the primary purpose of this 8 inch backflow preventer?

This 8 inch lead-free reduced pressure zone assembly is designed to protect the potable water supply by preventing the reverse flow of liquids, such as hazardous materials, due to backpressure or backsiphonage.

How does the SentryPlus Alert® flood sensor work?

The flood sensor detects excessive water discharges from the relief valve. When paired with an optional add-on connection kit, it activates to relay alerts to facility personnel through various communication methods like BMS, cellular, RS-485 Modbus, or Wi-Fi.

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 for corrosion resistance and strength. The check assembly is made of Noryl®.

Is this backflow preventer suitable for health hazard applications?

Yes, the Watts Series 994 reduced pressure zone assembly is specifically designed and approved for use in health hazard cross-connection applications, providing protection for the potable water supply.

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

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

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