8 M500N-OSY-GPM

Item Number: 0191132
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Regular price $37,192.51
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Brand - Ames

  • Nominal Pipe Size: 8 inch
  • Weight: 807.0 lb
  • Body Material: 304 (Schedule 40) Stainless Steel
  • Maximum Working Pressure: 175 PSI
  • Temperature Range: 33°F - 110°F
  • OSY Shutoff Valves
  • Horizontal N Pattern Installation
  • Includes Gallon Per Minute Meter
  • ASSE 1047, CSA B64.4, cULus, FM, AWWA C511-97, UL Approved

Description

The Maxim™ 8 inch Reduced Pressure Detector Backflow Preventer Assembly is designed for critical backflow prevention in fire protection systems and other cross-connections, safeguarding potable water supplies from contamination by non-potable water or fire protection substances. Featuring a durable 304 stainless steel body and sleeve, this compact unit is approximately 70% lighter than traditional designs. It includes UL and FM approved OSY gate valves, a gallon per minute meter for leak detection, and groove couplings for straightforward installation. Approved for horizontal N pattern installations, it meets ASSE 1047, CSA B64.4, cULus, FM, and AWWA C511-97 standards.

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Connections & Installation

  • This 8 inch reduced pressure detector backflow preventer features groove couplings to facilitate easy installation and pipeline alignment with existing grooved piping systems.
  • The assembly includes UL and FM approved Outside Stem and Yoke (OSY) resilient seated gate valves for secure shutoff.
  • Approved for horizontal N pattern installations.
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Additional Details

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

This compact, modular backflow preventer features a 304 stainless steel body and sleeve, OSY shutoff valves, and a gallon per minute meter for leak detection.

Features

  • 8 inch nominal pipe size
  • Extremely compact design, approximately 70% lighter than traditional designs
  • Housing and sleeve constructed from 304 (Schedule 40) stainless steel
  • Approved for horizontal N pattern installation
  • Furnished with a gallon per minute meter to detect underground leaks and unauthorized water use
  • Groove fittings allow for integral pipeline adjustment and easy installation
  • Patented Link Check provides lowest pressure loss
  • Unmatched ease of serviceability with a single access cover
  • Resilient seated OSY (Outside Stem and Yoke) gate valves, UL and FM approved
  • Corrosion-resistant bottom mounted pressure relief valve
  • Bronze body nickel plated test cocks
  • Torsion spring check modules and 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. Before installing, consult state, municipal, or local water authority, building, and plumbing codes.

Specifications

General

  • Nominal Pipe Size: 8 inch
  • Product Type: Reduced Pressure Detector Backflow Preventer
  • Series: Maxim™ M500N
  • Installation Orientation: Horizontal N Pattern
  • Design: Compact, Modular

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)

Certificates & Approvals

  • ASSE: 1047
  • CSA: B64.4
  • cULus: Classified
  • FM: Approved
  • AWWA: C511-97
  • UL: Classified

Dimensions & Weight (Approximate)

  • Length (A): 54 3/4 inch (1391 mm)
  • Height (C OSY): 37 3/4 inch (959 mm)
  • Width (D): 10 1/2 inch (267 mm)
  • Overall Length (M): 59 1/8 inch (1502 mm)
  • Weight: 657 lbs (298 kgs)

FAQs

What is the primary purpose of this backflow preventer?

This backflow preventer is designed to prevent the reverse flow of non-potable water and fire protection substances into the potable water supply, protecting against contamination from backsiphonage and backpressure.

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

The housing and sleeve are constructed from 304 (Schedule 40) stainless steel. Elastomers include EPDM, Silicone, and Buna 'N', with Noryl® and stainless steel for link checks, and Lead Free* Bronze Body for test cocks.

Is this assembly suitable for drinking water systems?

No, a warning states 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. Always consult local authorities before installation.

What is the maximum operating pressure and temperature range for this unit?

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).

Does this backflow preventer include a meter for water usage?

Yes, it comes furnished with a gallon per minute meter designed to detect underground leaks and unauthorized water use within the system.