4 4000SSF-OSY-FS

Item Number: F0690925
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$10,328.25
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When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Ames
  • Size: 4 inch
  • Weight: 346.0 lb
  • Body Material: 300 Series Stainless Steel
  • Maximum Working Pressure: 175 PSI
  • Temperature Range: 33°F - 110°F
  • Features SentryPlus Alert® Flood Sensor
  • Lightweight stainless steel construction
  • Short end-to-end dimensions for easy retrofit
  • Approved by ASSE 1013, CSA B64.5, UL Classified, FM Approved

Description

This 4 inch Ames Series 4000SS Reduced Pressure Zone (RPZ) Backflow Preventer Assembly provides critical protection for potable water supplies against contamination from hazardous cross-connections. Constructed with a lightweight, corrosion-resistant stainless steel body, it ensures long-term durability and reduces installation costs. Key features include resilient seated OSY shutoff valves, a patented cam-check assembly for low pressure drop, and an integrated SentryPlus Alert® flood sensor to detect relief valve discharge. When paired with an optional connection kit, the sensor actively relays alerts, preventing costly water damage. Its compact design and short lay length facilitate easy retrofitting and maintenance. Item number F0690925.

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Connections

  • This 4 inch backflow preventer assembly features flanged inlet and outlet connections for secure installation into your piping system.
  • The integrated SentryPlus Alert® flood sensor requires an add-on connection kit to enable active communication and alerts. Connection kit options include integration with BMS via RS-485 Modbus, cellular communication, or the Nexa® platform via Wi-Fi. Without this kit, the sensor operates passively.
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Additional Details

This 4 inch reduced pressure zone (RPZ) backflow preventer assembly is designed to protect potable water supplies from contamination due to backsiphonage and backpressure of hazardous materials.

It is ideal for continuous pressure piping applications and health-hazard cross-connections, featuring a compact modular design for easy maintenance and in-line repairs.

Key Features

  • SentryPlus Alert® Flood Sensor: Detects excessive water discharges from the relief valve, providing early notification of potential flooding events. Activation requires an add-on connection kit.
  • Corrosion-Resistant Construction: Made with a lightweight stainless steel body and internal parts for long-term durability and maximum strength, weighing half that of competitive designs to reduce installation and shipping costs.
  • Patented Cam-Check Assembly: Provides maximum flow at low pressure drop, ensuring efficient operation.
  • Easy Installation & Maintenance: Features short end-to-end dimensions for easy retrofitting and a single access cover for simplified in-line repairs. No special tools are required for servicing.
  • Balanced Rolling Diaphragm Relief Valve: The stainless steel relief valve eliminates sliding seals and lowers maintenance costs.
  • OSY Shutoff Valves: Includes resilient seated outside stem and yoke gate valves.
  • Compact Design: Allows for installation in smaller enclosures.
  • Top Mounted Test Cocks: Facilitate easy testing and monitoring.

Note: An add-on connection kit is required to activate the flood sensor's communication capabilities. Without this kit, the flood sensor functions passively. Inquire with governing authorities for local installation requirements.

Specifications

  • Size: 4 inch
  • Product Type: Reduced Pressure Zone (RPZ) Backflow Preventer Assembly
  • Body Material: 300 Series Stainless Steel
  • Internal Metal Parts: 300 Series Stainless Steel
  • Check Assembly Material: Noryl® thermoplastic with stainless steel components
  • Shutoff Valves: OSY (Outside Stem and Yoke) Resilient Seated Gate Valves
  • Relief Valve: Stainless steel, bottom mounted, balanced rolling diaphragm
  • Flood Sensor: SentryPlus Alert® Technology (requires add-on connection kit for active alerts)
  • Maximum Working Pressure: 175 PSI (12.1 bar)
  • Temperature Range: 33°F - 110°F (0.5°C – 43°C)
  • Lead Free*: Yes (wetted surface contains less than 0.25% lead by weight)
  • Flange Dimension: AWWA Class D

Approvals & Standards

  • ASSE: 1013
  • CSA: B64.5
  • UL: Classified (OSY only)
  • FM: Approved (OSY only)
  • Standard: AWWA C511-92

FAQs

What is the primary purpose of this 4 inch backflow preventer?

This 4 inch Ames Series 4000SS Reduced Pressure Zone (RPZ) backflow preventer assembly is designed to prevent hazardous materials from entering the potable water supply due to backsiphonage or backpressure. It is used for health-hazard cross-connections.

How does the SentryPlus Alert® flood sensor work and what is needed for active alerts?

The SentryPlus Alert® flood sensor detects excessive water discharge from the relief valve. To activate active communication and alerts to facility personnel, an add-on connection kit is required. Without the kit, the sensor is passive.

What materials are used in the construction of the Series 4000SS backflow preventer?

The main valve body and all internal metal parts are made from 300 Series stainless steel for superior corrosion resistance and strength. The check assembly uses Noryl® thermoplastic with stainless steel components.

What are the maximum operating pressure and temperature ratings for this assembly?

This backflow preventer has a maximum working pressure of 175 PSI (12.1 bar) and an operating temperature range of 33°F to 110°F (0.5°C to 43°C).

What certifications and approvals does this backflow preventer hold?

The Ames Series 4000SS is approved by ASSE 1013, CSA B64.5, UL Classified, and FM Approved (for OSY configurations). It also complies with AWWA C511-92 standards.

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