8 M500-OSY-GPM

Item Number: 0191120
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$35,200.49
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Ames
  • 8 Inch Reduced Pressure Detector Backflow Preventer
  • Weight: 731.0 lb
  • 304 (Schedule 40) Stainless Steel Housing & Sleeve
  • OSY (Outside Stem and Yoke) Resilient Seated Gate Valves
  • Gallon Per Minute (GPM) Detector Meter Included
  • Maximum Working Pressure: 175 PSI
  • Temperature Range: 33°F - 110°F
  • Groove Couplings for Easy Installation
  • Approved: ASSE 1047, CSA B64.4, UL, FM

Description

The Maxim™ M500 8 inch Reduced Pressure Detector Backflow Preventer Assembly is designed to safeguard potable water supplies from contamination by non-potable substances, specifically for fire protection systems and other health hazard cross-connections. Featuring a 304 (Schedule 40) stainless steel body, OSY shutoff valves, and torsion spring check modules, this compact unit prevents backsiphonage and backpressure. It includes a gallon per minute (GPM) meter to detect leaks and unauthorized water use. The assembly is ASSE 1047, CSA B64.4, UL, and FM approved, with a maximum working pressure of 175 PSI.

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Connections and Configurations

  • This 8 inch backflow preventer assembly is designed for installation in various configurations, including horizontal, "Z" pattern horizontal, or "N" pattern horizontal setups.
  • It features groove couplings which facilitate easy installation and allow for integral pipeline adjustment.
  • The assembly is equipped with OSY (Outside Stem and Yoke) resilient seated gate valves for reliable shutoff.
  • Ensure compatibility with your existing 8 inch piping system and consult local codes for specific installation requirements.
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Additional Details

The Maxim™ M500 8 inch Reduced Pressure Detector Backflow Preventer Assembly is designed to prevent the reverse flow of non-potable fire protection substances and water into the potable water supply. It protects against backsiphonage and backpressure in accordance with national plumbing codes and water authority requirements, making it ideal for cross-connections in fire sprinkler systems and other health hazard applications.

This compact, modular assembly features a 304 (Schedule 40) stainless steel housing and sleeve, torsion spring check modules, and outside stem and yoke (OSY) resilient seated gate valves. It includes a gallon per minute (GPM) meter to detect underground leaks and unauthorized water usage.

Features

  • Extremely compact design, allowing for smaller enclosures.
  • Approximately 70% lighter than traditional designs.
  • Entire valve body and closure sleeve manufactured from 304 (Schedule 40) stainless steel.
  • Groove couplings allow for easy installation and integral pipeline adjustment.
  • Patented Link Check modules provide lowest pressure loss.
  • Unmatched ease of serviceability with a single access cover.
  • Equipped with drip tight shutoff valves.
  • Includes a bronze body nickel plated test cocks.
  • Features a corrosive resistant bottom mounted stainless steel relief valve.
  • Available for horizontal or N pattern installations.
  • Reversible Silicone or EPDM check discs.

WARNING: It is illegal to use this product in any plumbing system providing water for human consumption, such as drinking or dish-washing, in the United States. Before installing, contact your local water authority, building, and plumbing codes.

Specifications

General

  • Product Type: Reduced Pressure Detector Backflow Preventer
  • Series: Maxim™ M500
  • Size: 8 inch
  • Shutoff Valve Type: OSY (Outside Stem and Yoke)
  • Detector Meter: Gallons Per Minute (GPM) Meter
  • Configuration: Horizontal, "Z" pattern horizontal, "N" pattern horizontal

Materials

  • Housing & Sleeve: 304 (Schedule 40) Stainless Steel
  • Elastomers: EPDM, Silicone, Buna 'N'
  • Link Checks: Noryl®, Stainless Steel
  • Check Discs: Reversible Silicone or EPDM
  • Test Cocks: Lead Free* Bronze Body
  • Pins & Fasteners: 300 Series Stainless Steel
  • Springs: Stainless Steel

Performance

  • Maximum Working Pressure: 175 PSI (12.06 bar)
  • Temperature Range: 33°F - 110°F (5°C - 43°C)

Physical Characteristics

  • Weight (M500 OSY): 581 lbs

Certificates & Approvals

  • ASSE: 1047
  • CSA: B64.4
  • UL Classified
  • FM Approved

FAQs

What is the primary purpose of the Maxim™ M500 Reduced Pressure Detector Backflow Preventer?

Its primary purpose is to prevent the reverse flow of non-potable fire protection substances and water into the potable water supply. This protects against contamination due to backsiphonage or backpressure.

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

The housing and sleeve are made from 304 (Schedule 40) stainless steel. Elastomers include EPDM, Silicone, and Buna 'N'. Test cocks are Lead Free* Bronze Body, and pins/fasteners/springs are stainless steel.

What are the key approvals and certifications for this 8 inch assembly?

This backflow preventer is approved by ASSE 1047, CSA B64.4, UL Classified, and FM Approved, ensuring it meets recognized industry standards for performance and safety.

Does this backflow preventer include a way to detect leaks or unauthorized water use?

Yes, it comes furnished with a gallon per minute (GPM) meter specifically designed to detect underground leaks and unauthorized water consumption, providing an extra layer of system monitoring.

What is the maximum operating pressure and temperature range for the M500 series?

The maximum working pressure is 175 PSI (12.06 bar), and the operating temperature range is 33°F to 110°F (5°C to 43°C).

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