2.5 4000SS-DOSY-FxG-FS

Item Number: F0694002
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$6,903.00
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Ames
  • Size: 2 1/2 inch
  • Weight: 144.0 lb
  • Body Material: 300 Series Stainless Steel
  • Maximum Working Pressure: 175 PSI
  • Flood sensor with SentryPlus Alert® technology
  • Lightweight stainless steel body
  • Flanged Inlet x Grooved Outlet with Domestic OSY shutoff valves
  • Lead Free: Wetted surface contains less than 0.25% lead by weight
  • Certified: AWWA C511-92, USC, FM, UL, CSA B64.4

Description

The Ames Fire & Waterworks 2.5 inch 4000SS Reduced Pressure Zone Backflow Preventer Assembly protects potable water from contamination by preventing reverse flow from health-hazard cross-connections. Constructed with a durable, lightweight 300 Series stainless steel body, this assembly includes domestic flanged by grooved OSY gate valves and a cam-check assembly designed for maximum flow. It features an integrated flood sensor with SentryPlus Alert® technology to detect relief valve discharge, requiring an add-on connection kit for active monitoring. Certified by AWWA, USC, FM, UL, and CSA B64.4, this unit is rated for 175 PSI and is Lead Free.

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Connections

  • The assembly features a flanged inlet and a grooved outlet for connections to the piping system.
  • The shutoff valves are Domestic Outside Stem and Yoke (OSY) resilient seated gate valves.
  • To enable flood monitoring, the integrated SentryPlus Alert® flood sensor requires an add-on connection kit (sold separately).
  • Connection kit options allow for integration with BMS, cellular networks, or a Sensor Control Monitor which connects to BAS via RS-485 Modbus or the Nexa® platform via Wi-Fi.
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Additional Details

The 2 1/2 inch Ames Fire & Waterworks 4000SS Reduced Pressure Zone Backflow Preventer Assembly is engineered to prevent the reverse flow of contaminated, non-potable water into the potable water supply. It is ideal for health hazard cross-connections and other critical service line entrance applications.

This assembly features a flood sensor with SentryPlus Alert® technology to detect excessive water discharge from the relief valve, providing an alert when paired with an add-on connection kit.

Construction & Design

  • Features a short lay length and compact design for easy retrofitting and smaller enclosures.
  • Equipped with domestic flange by groove outside stem and yoke resilient seated gate valves.
  • The cam-check assembly provides maximum flow at low pressure drop.
  • A stainless steel relief valve utilizes a balanced rolling diaphragm to eliminate sliding seals, reducing maintenance.
  • Includes top mounted test cocks for easy maintenance.
  • The stainless steel body is half the weight of competitive designs, reducing installation and shipping costs.

Flood Sensor & Alerts

  • The integrated flood sensor with SentryPlus Alert® technology detects continuous discharge from the relief valve.
  • Requires an add-on sensor connection kit to activate flood monitoring and relay alerts.
  • Connection kit options include BMS, cellular communication, or the Sensor Control Monitor for integration with BAS via RS-485 Modbus or the Nexa® platform via Wi-Fi connectivity.

NOTICE: An add-on connection kit is required to activate the flood sensor. Without this kit, the flood sensor is a passive component with no communication to other devices. Watts® is not responsible for alert failures due to connectivity issues, power outages, or improper installation.

Specifications

  • Size: 2 1/2 inch
  • Body Material: 300 Series Stainless Steel
  • Check Assembly Material: Noryl®
  • Inlet Connection: Flanged
  • Outlet Connection: Grooved
  • Shutoff Valves: Domestic OSY Resilient Seated Gate Valves
  • Flange Dimension: AWWA Class D
  • Temperature Range: 33°F – 110°F (0.5°C – 43°C)
  • Maximum Working Pressure: 175 PSI (12.1 bar)
  • Lead Free Compliance: Wetted surface contains less than 0.25% lead by weight

Certificates & Approvals

  • AWWA C511-92
  • USC
  • FM Approved
  • UL Listed
  • UL Classified
  • CSA B64.4

FAQs

What is the primary purpose of the Ames Fire & Waterworks 4000SS Reduced Pressure Zone Assembly?

Its primary purpose is to prevent the reverse flow of contaminated, non-potable water into the potable water supply, protecting against backsiphonage and backpressure in health hazard cross-connection applications.

What is the body material of this backflow preventer?

The main valve body and all internal metal parts are constructed from 300 Series stainless steel, providing long-term corrosion resistance and strength.

How does the flood sensor feature work?

The assembly includes a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve. An add-on connection kit is required to activate the sensor and relay alerts to facility personnel or connected systems.

What are the connection types for this 2.5 inch assembly?

This specific model features a flanged inlet and a grooved outlet, equipped with domestic Outside Stem and Yoke (OSY) resilient seated gate valves.

What certifications and approvals does the 4000SS assembly have?

This assembly is approved and certified by AWWA C511-92, USC, FM, UL, and CSA B64.4, ensuring compliance with national codes and safety standards.

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