8 909RPDA-DOSY-GPM-FS

Item Number: 88009361
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$60,473.30
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Watts
  • Nominal Size: 8 inch
  • Weight: 1656.0 lb
  • Body Material: Cast Iron with ArmorTek® Coating
  • Maximum Working Pressure: 175 psi
  • Continuous Temperature Range: 33°F to 140°F
  • Includes SentryPlus Alert® Flood Sensor
  • Domestic OSY Resilient Seated Gate Valves
  • GPM meter detects leaks and unauthorized water use
  • UL Classified, ASSE 1047, AWWA C511-92, CSA B64 Approved

Description

This 8 inch Watts Series 909RPDA Reduced Pressure Detector Assembly Backflow Preventer is engineered to prevent the reverse flow of fire protection system substances into the potable water supply. Designed for health hazard applications and continuous pressure systems, it features an ArmorTek® coated cast iron body for superior corrosion resistance against MIC. Key components include domestic OSY resilient seated gate valves, a GPM meter to detect leaks, and a SentryPlus Alert® flood sensor for excessive discharge detection. Its modular design facilitates easy maintenance, ensuring reliable performance and compliance with AWWA, ASSE, UL, and CSA standards. Item number 88009361.

Help Me Connect

This 8 inch reduced pressure detector backflow preventer is designed for installation on fire protection systems connected to a public water supply.

The integrated SentryPlus Alert® flood sensor requires an add-on sensor connection kit (sold separately) to activate its notification features. This kit enables compatibility with Building Management Systems (BMS) and cellular network communication to relay alerts to service personnel.

It is crucial to note that the flood sensor functionality does not replace the requirement to comply with all installation instructions, codes, and regulations for proper drainage in the event of a discharge.

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Additional Details

This 8 inch Watts Series 909RPDA Reduced Pressure Detector Assembly Backflow Preventer is designed to prevent the reverse flow of fire protection system substances into the potable water supply. It is ideal for health hazard applications and continuous pressure piping.

Key Components

  • Epoxy coated cast iron body.
  • Domestic OSY (Outside Stem and Yoke) resilient seated gate valves.
  • Captured spring check valves.
  • Replaceable stainless steel seats.
  • Top mounted test cocks.
  • Pressure differential relief valve.
  • GPM meter to detect underground leaks and unauthorized water use.

Advanced Protection

  • Features ArmorTek® coating technology, a patented three-part advanced epoxy system, applied to internal and external surfaces to resist microbial-induced corrosion (MIC) and protect exposed metal substrate.
  • Includes a flood sensor with SentryPlus Alert® technology on the relief valve to detect excessive water discharges. When activated with an add-on sensor connection kit (sold separately), this sensor relays a signal for notification of potential flooding to service personnel.

Design & Performance

  • Modular check design facilitates maintenance and assembly access.
  • Provides maximum flow at low pressure drop.
  • Compact design combines economy with performance.
  • Air-in/Water-out relief valve design provides maximum capacity during emergency conditions.

Specifications

  • Nominal Size: 8 inch
  • Valve Type: Reduced Pressure Detector Assembly Backflow Preventer
  • Shutoff Valves: Domestic OSY Resilient Seated Gate Valves
  • Meter Type: GPM (Gallons Per Minute) Meter
  • Flood Sensor: Included with SentryPlus Alert® technology

Materials

  • Body Material: Cast Iron
  • Coating: ArmorTek Powder Coating
  • Seat and Disc Holder: Stainless Steel
  • Discs: Rubber
  • Trim: Stainless Steel
  • Test Cocks: Bronze

Performance

  • Maximum Working Pressure: 175 psi (12.1 bar)
  • Temperature Range (Continuous): 33°F - 140°F (0.5°C - 60°C)

Certificates & Approvals

  • AWWA C511-92
  • ASSE 1047
  • UL Classified File No. EX3185
  • CSA B64
  • USC Manual for Cross-connection Control, 8th Edition

FAQs

What is the primary function of the 8 inch Watts 909RPDA backflow preventer?

Its primary function is to prevent the reverse flow of non-potable fire protection system substances, such as glycerin wetting agents or stagnant water, from contaminating the potable water supply.

What type of coating is used on the 909RPDA assembly and why?

The assembly features ArmorTek®, a patented three-part advanced epoxy coating system. This coating is applied to internal and external surfaces to reduce microbial-induced corrosion (MIC) and protect exposed metal substrates, enhancing durability.

How does the integrated flood sensor work?

The SentryPlus Alert® flood sensor detects excessive water discharges from the relief valve. When activated with a separate add-on sensor connection kit, it relays a signal for notification, helping facility personnel address potential flooding.

What does the GPM meter monitor?

The GPM (Gallons Per Minute) meter is included to detect underground leaks and unauthorized water use within the system, providing a valuable tool for water management.

What are the operating pressure and temperature limits for this unit?

The maximum operating pressure is 175 psi (12.1 bar), and the continuous temperature range is 33°F to 140°F (0.5°C to 60°C).

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