4 M300-OSY-GPM

Item Number: 0191040
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$12,602.25
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Ames
  • 4 inch nominal pipe size
  • Weight: 434.0 lb
  • Maxim Double Check Detector Backflow Preventer
  • Stainless Steel Body
  • OSY (Outside Stem and Yoke) Shutoff Valves
  • Tri-Link Check Valve Assembly for Low Pressure Loss
  • Includes Gallons Per Minute (GPM) Meter
  • Maximum Working Pressure: 175 psi
  • Approved for Horizontal or Vertical Installation

Description

This 4 inch Maxim Double Check Detector Backflow Preventer Assembly safeguards potable water supplies by preventing the reverse flow of fire protection substances and non-potable water. Ideal for non-health hazard cross-connections like fire sprinkler systems, it features a durable stainless steel body for corrosion resistance and a compact design suitable for smaller enclosures. Tri-link check valves ensure low pressure loss, while OSY shutoffs provide reliable operation. A built-in gallon per minute meter helps detect leaks. It offers installation flexibility with approval for both horizontal and vertical orientations and a maximum working pressure of 175 psi. Item number 0191040.

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Connections and Installation

The 4 inch Maxim Double Check Detector Backflow Preventer Assembly features flanged connections for secure installation into your piping system. It is equipped with Outside Stem and Yoke (OSY) resilient seated gate valves at both the inlet and outlet for reliable shutoff. This assembly is designed for installation in either a horizontal or vertical orientation; always ensure the flow arrow on the assembly aligns with your system's flow direction. It is suitable for protecting potable water supplies at cross-connections, particularly for fire sprinkler systems and other non-health hazard applications.

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Additional Details

This Maxim™ 4 inch double check detector backflow preventer assembly is engineered to prevent the reverse flow of fire protection substances and non-potable water into the potable water supply due to backsiphonage or backpressure. It is ideal for protecting against non-health hazards at cross-connections, such as on fire sprinkler systems and at service line entrances.

Key Features

  • Stainless steel single housing with a single access sleeve for simplified maintenance.
  • Furnished with a gallon per minute meter to detect underground leaks and unauthorized water use.
  • Features replaceable check disc rubber for easy servicing.
  • Compact modular construction allows for installation in smaller vaults and enclosures.
  • Tri-link check valve assembly provides the lowest pressure loss.
  • Stainless steel construction ensures long-term corrosion protection and maximum strength.
  • Approved for both horizontal or vertical installation, in accordance with the flow arrow on the assembly.

Components

  • Durable stainless steel body.
  • Efficient tri-link check valves.
  • Reliable outside stem and yoke (OSY) resilient seated gate valves.
  • Equipped with four test cocks for verification.

NOTICE: The information contained herein is not intended to replace the full product installation and safety information available or the experience of a trained product installer. You are required to thoroughly read all installation instructions and product safety information before beginning the installation of this product.

Specifications

  • Product Type: Double Check Detector Backflow Preventer Assembly
  • Brand: Maxim (Ames Fire & Waterworks)
  • Nominal Pipe Size: 4 inch
  • Shutoff Valves: OSY (Outside Stem and Yoke) Resilient Seated Gate Valves
  • Check Valve Type: Tri-Link Checks
  • Body Material: Stainless Steel
  • Meter Included: Gallons per Minute (GPM) Meter
  • Check Disc Material: Replaceable Rubber
  • Maximum Working Pressure: 175 psi (12.06 bar)
  • Installation Orientation: Horizontal or Vertical
  • Number of Test Cocks: 4

Certificates & Approvals

    FAQs

    What is the primary function of the 4 inch Maxim Double Check Detector Backflow Preventer Assembly?

    Its primary function is to prevent the reverse flow of fire protection substances and non-potable water into the potable water supply, protecting against backsiphonage and backpressure.

    What type of shutoff valves are included with this assembly?

    This assembly comes equipped with Outside Stem and Yoke (OSY) resilient seated gate valves.

    What is the maximum working pressure for this backflow preventer?

    The maximum working pressure for this 4 inch assembly is 175 psi (12.06 bar).

    Can this backflow preventer be installed in any orientation?

    Yes, this assembly is approved for both horizontal or vertical installation, provided the direction of the flow arrow on the assembly is followed.

    Does this backflow preventer include a meter?

    Yes, it is furnished with a gallon per minute (GPM) meter to help detect underground leaks and unauthorized water use.

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