4 M500N-BFG-GPM

Item Number: 0191152
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$15,903.76
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Ames
  • Size: 4 inch
  • Weight: 260.0 lb
  • Housing Material: 304 (Schedule 40) Stainless Steel
  • Shutoff Valves: UL/FM Grooved Gear Operated Butterfly
  • Meter: Gallon per Minute (GPM)
  • Installation: Horizontal N Pattern
  • Max Working Pressure: 175 PSI
  • Approvals: ASSE 1047, CSA B64.4, UL, FM, AWWA
  • Design: Extremely Compact

Description

The Maxim 4 inch M500N-BFG-GPM Reduced Pressure Detector Backflow Preventer Assembly protects potable water supplies from hazardous cross-connections. Designed for fire sprinkler systems, industrial processing, and non-potable service applications, it prevents reverse flow and unauthorized water use. This compact unit features a durable 304 stainless steel housing, grooved butterfly valve shutoffs, and a gallon per minute (GPM) meter to detect leaks. Its lightweight, modular design with grooved fittings ensures easy installation and maintenance in horizontal N pattern configurations. Approved by ASSE, CSA, UL, FM, and AWWA, it offers reliable performance at pressures up to 175 PSI.

Help Me Connect

Connection Type

This 4 inch backflow preventer assembly features grooved end connections, designed for quick and easy installation with corresponding grooved piping systems. The grooved fittings allow for integral pipeline adjustment, simplifying alignment during setup.

Compatibility

  • Connects to 4 inch grooved piping.
  • Compatible with UL/FM grooved gear operated butterfly valves with tamper switches.
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Additional Details

The Maxim™ 4 inch Reduced Pressure Detector Backflow Preventer Assembly, model M500N-BFG-GPM, is engineered to safeguard potable drinking water supplies from contamination.

This assembly prevents the reverse flow of non-potable water from dangerous cross-connections into the main water supply, making it ideal for fire sprinkler systems and industrial processing applications. It is also equipped with a gallon per minute (GPM) meter to monitor unauthorized water use or detect underground leaks.

Design & Construction

  • Extremely Compact Design: Allows for installation in smaller enclosures.
  • Lightweight: 70% lighter than traditional backflow preventer designs.
  • Housing & Sleeve: Constructed from 304 (Schedule 40) stainless steel for durability and corrosion resistance.
  • Integral Pipeline Adjustment: Achieved through groove fittings for easy installation and alignment.
  • Access & Maintenance: Features a single access cover for unmatched ease of serviceability.

Performance & Components

  • Check Modules: Two independent Link Check modules with a patented design for lowest pressure loss.
  • Check Discs: Reversible elastomer discs and replaceable check disc rubber.
  • Shutoff Valves: Equipped with UL and FM grooved gear operated butterfly valves with tamper switches.
  • Relief Valve: Bottom-mounted, corrosive-resistant differential pressure relief valve.
  • Installation Orientation: Approved for horizontal N pattern installations.
  • Test Cocks: Made with bronze body nickel plated test cocks.

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. Consult your local water authority, building and plumbing codes before installation.

Specifications

General

  • Product Type: Reduced Pressure Detector Backflow Preventer Assembly
  • Model: M500N-BFG-GPM
  • Nominal Size: 4 inch
  • Installation Orientation: Horizontal, N pattern

Materials

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

Performance

  • Shutoff Valves: UL/FM Grooved Gear Operated Butterfly Valves with Tamper Switch
  • Meter: Gallon per minute (GPM)
  • Temperature Range: 33°F - 110°F (5°C - 43°C)
  • Maximum Working Pressure: 175 PSI (12.06 bar)

Certificates & Approvals

  • ASSE: 1047
  • CSA: B64.4
  • UL Classified: For BFG & OSY Only
  • FM Approved: For BFG & OSY Only
  • AWWA: C511-97

FAQs

What is the primary purpose of this backflow preventer assembly?

The primary purpose is to protect drinking water supplies from contamination caused by dangerous cross-connections, preventing the reverse flow of non-potable water into the potable system. It is specifically designed for health-hazard non-potable service applications such as fire lines and industrial processing.

What is the flow meter included with this assembly used for?

This assembly comes with a gallon per minute (GPM) meter, which is used to detect unauthorized water use from the fire protection system or identify potential underground leaks.

What materials are used for the main housing of the M500N-BFG-GPM assembly?

The main housing and sleeve of this backflow preventer assembly are constructed from durable 304 (Schedule 40) stainless steel, offering excellent corrosion resistance and longevity.

What type of shutoff valves are included with this model?

The M500N-BFG-GPM model is furnished with UL and FM approved grooved gear operated butterfly valves, which also include tamper switches for enhanced security and monitoring.

What are the approved installation orientations for this backflow preventer?

This backflow preventer assembly is approved for horizontal and N pattern horizontal installations, offering flexibility for various piping configurations.

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