6 909RPDA-OSY-GPM-FS

Item Number: 88009323
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$33,800.26
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts
  • Size: 6 inch
  • Weight: 820.0 lb
  • Body Material: Cast Iron, ArmorTek® Epoxy Coated
  • Maximum Working Pressure: 175 psi
  • Temperature Range: 33°F - 140°F
  • Shutoff Valves: OSY Resilient Seated Gate Valves
  • Meter Type: GPM (Gallons Per Minute)
  • Flood Sensor: SentryPlus Alert® Technology
  • Corrosion Protection: Reduced Microbial-Induced Corrosion (MIC)

Description

This 6 inch Watts 909RPDA Reduced Pressure Detector Assembly Backflow Preventer prevents the reverse flow of fire protection system substances into potable water supplies. It features an epoxy-coated cast iron body with ArmorTek® technology for superior corrosion resistance and OSY resilient seated gate valves. The integrated SentryPlus Alert® flood sensor detects relief valve discharges, providing early warning for potential flooding. A GPM meter monitors water usage and detects leaks. Designed for health hazard applications, this assembly ensures compliance and safeguards water quality, offering reliable protection and easy maintenance. Item number 88009323.

Help Me Connect

This 6 inch Watts 909RPDA Reduced Pressure Detector Backflow Preventer Assembly is designed for installation on fire protection systems when connected to a public water supply.

Its primary purpose is to prevent the reverse flow of substances like glycerin wetting agents, stagnant water, or non-potable water into the potable water line, particularly in health hazard applications, safeguarding against backsiphonage or backpressure.

Flood Sensor Connectivity

  • The integrated flood sensor requires an add-on connection kit (sold separately) to activate its alert features.
  • Connection kit options include those compatible with Building Management Systems (BMS) via RS-485 Modbus, cellular network communication, or the Nexa® platform via Wi-Fi connectivity.
  • Without an add-on connection kit, the sensor is a passive component and will not communicate with other devices.
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Additional Details

This 6 inch Watts 909RPDA Reduced Pressure Detector Backflow Preventer Assembly is designed for health hazard applications to prevent the reverse flow of fire protection system substances, such as glycerin wetting agents, stagnant water, and non-potable water, into the potable water supply.

It effectively safeguards against backsiphonage and backpressure conditions.

Construction & Coating

  • Features an epoxy coated cast iron body with ArmorTek®, a patented 3-part advanced epoxy coating system.
  • ArmorTek® coating technology is engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal substrate.
  • Includes OSY (Outside Stem and Yoke) resilient seated gate valves, captured spring check valves, and replaceable stainless steel seats.

Flood Detection & Alerts

  • Equipped with a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve.
  • When paired with an add-on connection kit (sold separately), the sensor is activated to relay alerts for potential flooding events.
  • Connection kit options enable integration with Building Management Systems (BMS) via RS-485 Modbus, cellular network communication, or the Nexa® platform through Wi-Fi.

Metering

  • Furnished with a GPM (gallons per minute) meter to detect underground leaks and unauthorized water use.

Specifications

  • Size: 6 inch
  • Body Material: Cast Iron
  • Coating: ArmorTek® powder coating (applied to internal and external surfaces)
  • Seat and Disc Holder Material: Stainless steel
  • Discs Material: Rubber
  • Trim Material: Stainless steel
  • Test Cocks Material: Bronze
  • Shutoff Valves: OSY (Outside Stem and Yoke) resilient seated gate valves
  • Relief Valve: Pressure differential relief valve with air-in/water-out design
  • Seats: Replaceable stainless steel
  • Flood Sensor: Integrated with SentryPlus Alert® technology
  • Corrosion Protection: ArmorTek® coating technology (reduces MIC)
  • Meter Type: GPM (gallons per minute)
  • Maximum Working Pressure: 175 psi (12.1 bar)
  • Temperature Range: 33°F - 140°F (0.5°C ~ 60°C) continuous
  • Flow Characteristics: Maximum flow at low pressure drop
  • Maintenance: Compact design, easy maintenance, no special tools required

Certificates & Approvals

  • AWWA: C511-92
  • ASSE: 1047
  • UL Classified: File No. EX3185
  • FM Approved
  • CSA: B64
  • USC Manual for Cross-connection Control: 8th Edition
  • Approved by the Foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California

FAQs

What is the primary use of this backflow preventer?

This backflow preventer is primarily used in health hazard applications within fire protection systems. Its main function is to prevent the reverse flow of non-potable substances into the public water supply due to backsiphonage or backpressure.

What is ArmorTek® coating and what are its benefits?

ArmorTek® is a patented three-part advanced epoxy coating system applied to the cast iron body. It is engineered to reduce microbial-induced corrosion (MIC) and protect exposed metal surfaces, extending the product's lifespan and maintaining integrity.

How does the flood sensor work and what does it require?

The integrated flood sensor with SentryPlus Alert® technology detects excessive water discharges from the relief valve. To activate its alert features, an add-on connection kit (sold separately) is required, which can integrate with BMS, cellular, or Wi-Fi platforms.

What type of shutoff valves are included with this assembly?

The assembly comes standardly equipped with UL Classified and FM Approved OSY (Outside Stem and Yoke) resilient seated gate valves. These valves allow for visual confirmation of valve position.

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). It can operate continuously within a temperature range of 33°F to 140°F (0.5°C to 60°C).

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