3 M500-OSY-GPM

Item Number: 0191117
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$11,779.50
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Ames
  • Size: 3 inch
  • Weight: 213.0 lb
  • Body Material: 304 (Schedule 40) Stainless Steel
  • Shutoff Valves: OSY Resilient Seated Gate Valves
  • Max Working Pressure: 175 PSI
  • Temperature Range: 33°F - 110°F
  • Features: Gallon Per Minute (GPM) Meter
  • Approvals: ASSE 1047, CSA B64.4, cULus, FM, AWWA C511-97
  • Design: Extremely Compact, 70% Lighter

Description

The Maxim M500 3-inch Reduced Pressure Detector Backflow Preventer Assembly with OSY shutoff valves is designed to protect potable water supplies from hazardous cross-connections. Constructed with a 304 stainless steel housing and sleeve, it is 70% lighter and more compact than traditional designs. This assembly includes patented Link Check modules for low pressure loss, a bottom-mounted stainless steel relief valve, and a gallon per minute meter for detecting leaks and unauthorized water usage. It features groove fittings for easy installation and is approved by ASSE 1047, CSA B64.4, cULus, FM, and AWWA C511-97. Max operating pressure is 175 PSI.

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Connections

  • This assembly features groove fittings which allow for integral pipeline adjustment and simplify installation.
  • The inlet and outlet connections are designed for OSY (Outside Stem and Yoke) resilient seated gate valves.
  • Can be installed in Horizontal or N Pattern configurations.
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Additional Details

This Maxim™ 3 inch Reduced Pressure Detector Backflow Preventer Assembly is engineered to safeguard drinking water supplies from dangerous cross-connections, protecting against reverse flow of fire protection substances and non-potable water due to backsiphonage or backpressure. It is ideal for health-hazard applications such as fire sprinkler systems and other service line contamination risks.

This compact, modular design features a single access cover for straightforward maintenance and is equipped with a gallon per minute meter for detecting unauthorized water use or underground leaks.

Design & Construction

  • Extremely compact design, up to 70% lighter than traditional designs
  • Housing and sleeve constructed from 304 (Schedule 40) Stainless Steel
  • Includes two independent Link Check modules and a differential pressure relief valve
  • Comes with two drip tight shutoff valves and required test cocks
  • Groove fittings allow for integral pipeline adjustment and easy installation
  • Features patented Link Check for lowest pressure loss and unmatched ease of serviceability
  • Equipped with Outside Stem and Yoke (OSY) resilient seated gate valves
  • Available for Horizontal or N Pattern installations
  • Replaceable check disc rubber

WARNING: It is illegal to use this product in any plumbing system providing water for human consumption, such as drinking or dishwashing, in the United States. Consult your local water authority, building, and plumbing codes before installation.

Specifications

  • Size: 3 inch
  • Body Material: 304 (Schedule 40) Stainless Steel
  • Housing & Sleeve Material: 304 (Schedule 40) Stainless Steel
  • Shutoff Valves: Outside Stem and Yoke (OSY) Resilient Seated Gate Valves
  • Check Modules: Patented Link Check
  • Test Cocks Body Material: Lead Free Bronze
  • Test Cocks Plating: Nickel Plated
  • Elastomers: EPDM, Silicone, Buna 'N'
  • Link Check Material: Noryl®, Stainless Steel
  • Check Discs: Reversible Silicone or EPDMr
  • Pins & Fasteners: 300 Series Stainless Steel
  • Springs: Stainless Steel
  • Max Working Pressure: 175 PSI (12.06 bar)
  • Temperature Range: 33°F - 110°F (5°C - 43°C)
  • Configuration: Horizontal, "Z" pattern horizontal, "N" pattern horizontal
  • Bypass Assembly: Includes Gallon Per Minute (GPM) meter, Reduced Pressure Zone Assembly, and test cocks

Certificates & Approvals

  • ASSE 1047
  • CSA B64.4
  • cULus Classified
  • FM Approved (for OSY models)
  • AWWA C511-97

FAQs

What is the primary function of the Maxim M500 Reduced Pressure Detector Backflow Preventer Assembly?

Its primary function is to protect drinking water supplies from contamination due to cross-connections with non-potable water, often found in fire protection systems or industrial processing, by preventing reverse flow.

What size is this specific backflow preventer assembly?

This particular assembly is a 3-inch model. The Maxim M500 series is available in sizes from 2½ to 10 inches.

What type of shutoff valves are included with this assembly?

This Maxim M500 assembly comes with UL/FM approved Outside Stem and Yoke (OSY) resilient seated gate valves, which provide drip-tight shutoff.

What material is the main body and housing made from?

The entire valve body and closure sleeve are manufactured from 304 (Schedule 40) stainless steel, offering durability and corrosion resistance.

Why does this backflow preventer include a gallon per minute meter?

The integrated gallon per minute (GPM) meter in the bypass assembly is used to monitor unauthorized water usage or detect underground leaks within the system, helping to conserve water and identify potential issues.

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