3 4000SS-DOSY-FS

Item Number: F0692722
1 1
$7,766.84
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Ames
  • Assembly Size: 3 inch
  • Weight: 263.0 lb
  • Body Material: 300 Series Stainless Steel
  • Shutoff Valves: Domestic OSY Resilient Seated Gate Valves
  • Maximum Working Pressure: 175 psi
  • Flood Detection: SentryPlus Alert® Flood Sensor
  • Certifications: ASSE 1013, CSA B64.5, FM Approved, UL Classified
  • Lead Free* construction
  • Lightweight design for easier installation

Description

This 3-inch Ames Fire & Waterworks 4000SS Reduced Pressure Zone (RPZ) Backflow Preventer Assembly provides crucial protection for potable water supplies against contamination from backsiphonage and backpressure. It features a durable, lightweight 300 Series stainless steel body, domestic Outside Stem and Yoke (OSY) gate valves, and a balanced rolling diaphragm relief valve for low maintenance. Integrated SentryPlus Alert® flood sensor technology detects excessive water discharge, offering early notification of potential flooding when paired with an add-on connection kit. Rated for up to 175 psi, this Lead Free* assembly meets ASSE 1013, CSA B64.5, FM, and UL standards for reliable performance in health hazard applications.

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Installation & Compatibility

  • This backflow preventer is designed for installation at cross-connections identified as health hazard applications and at the service line entrance to protect potable water supply.
  • The flood sensor requires an add-on connection kit (sold separately) for active alert notification. Available connection kit options include integration with Building Management Systems (BMS), cellular network communication, or a Sensor Control Monitor for BAS via RS-485 Modbus or Nexa® platform via Wi-Fi.
  • Inquire with local governing authorities for specific installation requirements and codes.
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Additional Details

This 3 inch Ames Fire & Waterworks 4000SS Series Reduced Pressure Zone (RPZ) backflow preventer assembly is designed to protect potable water supplies from contamination caused by backsiphonage or backpressure.

It is ideal for health hazard cross-connection applications and service line entrances.

Construction & Design

  • Features a short lay length and lightweight stainless steel body, reducing installation and shipping costs.
  • Equipped with domestic Outside Stem and Yoke (OSY) resilient seated gate valves and spring-loaded cam-check valves for reliable operation.
  • The pressure differential relief valve is constructed from corrosion-resistant stainless steel with a balanced rolling diaphragm, designed to eliminate sliding seals and lower maintenance.
  • A single access cover secured by a two-bolt grooved coupling allows for easy access to internal parts.
  • No special tools are required for servicing.

Flood Detection & Alerting

  • Includes a flood sensor with SentryPlus Alert® technology to detect excessive water discharge from the relief valve.
  • An add-on connection kit (sold separately) is required to activate the flood sensor's alert feature.
  • When activated, the sensor can relay signals for potential flooding events via BMS, cellular communication, or the Sensor Control Monitor (integrates with BAS via RS-485 Modbus or Nexa® platform via Wi-Fi).

NOTICE: An add-on connection kit is required to activate the flood sensor. Without the connection kit, the flood sensor is a passive component that has no communication with any other device. Use of the flood sensor does not replace the need to comply with all required installation, operation, and maintenance instructions, codes, and regulations, including the need for proper drainage in the event of a discharge.

Specifications

  • Product Type: Reduced Pressure Zone Backflow Preventer
  • Assembly Size: 3 inch
  • Body Material: 300 Series Stainless Steel
  • Internal Metal Parts: 300 Series Stainless Steel
  • Check Assembly Material: Noryl®
  • Shutoff Valves: Domestic Outside Stem and Yoke (OSY) Resilient Seated Gate Valves
  • Relief Valve: Stainless Steel with Balanced Rolling Diaphragm
  • Flood Detection: SentryPlus Alert® Flood Sensor (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)
  • Flange Dimension: AWWA Class D

Certificates & Approvals

  • AWWA C511-92
  • ASSE 1013
  • CSA B64.5
  • FM Approved (OSY only)
  • UL Classified (OSY only)
  • Lead Free* (Wetted surface contains less than 0.25% lead by weight)

Dimensions (Approximate)

  • Length (A): 38 in (965 mm)
  • C (OSY): 18 7/8 in (479 mm)
  • D: 10 1/4 in (260 mm)
  • G: 10 1/2 in (267 mm)
  • L: 10 in (254 mm)
  • M: 22 in (559 mm)
  • N: 10 1/8 in (257 mm)
  • P: 7 1/2 in (191 mm)

Weight (Approximate)

  • Weight with Gates: 226 lb (103 kg)
  • Weight without Gates: 62 lb (28 kg)

FAQs

What is the primary purpose of this 3-inch 4000SS RPZ assembly?

Its primary purpose is to protect potable water supplies from contamination caused by backsiphonage or backpressure from non-potable sources, especially in health hazard cross-connection applications.

What material is the main body of the backflow preventer made from?

The main valve body is constructed from 300 Series stainless steel, which provides long-term corrosion resistance and maximum strength.

How does the flood sensor feature work, and what is required to activate it?

The SentryPlus Alert® flood sensor detects excessive water discharges from the relief valve. To activate its alert functionality, an add-on connection kit must be purchased separately. Without this kit, the sensor is passive.

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

This assembly 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 does this backflow preventer hold?

This 4000SS series backflow preventer is certified to AWWA C511-92, ASSE 1013, CSA B64.5, and is FM Approved and UL Classified (for OSY models). It also meets Lead Free* requirements.