8 4000SS-OSY-FS

Item Number: F0690468
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$27,755.25
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Ames
  • Size: 8 inch
  • Weight: 760.0 lb
  • Lead Free: Yes
  • Shutoff Valves: OSY Gate Valves
  • Body Material: 300 Series Stainless Steel
  • Flood Sensor: SentryPlus Alert technology
  • Maximum Working Pressure: 175 psi
  • Temperature Range: 33°F - 110°F
  • Lightweight stainless steel body reduces installation costs

Description

This 8 inch Ames 4000SS reduced pressure zone backflow preventer assembly protects potable water supplies from contamination caused by backpressure or backsiphonage. Featuring a lead-free stainless steel body and resilient seated OSY shutoff valves, it is ideal for health-hazard cross-connections and continuous pressure piping. The integrated SentryPlus Alert flood sensor detects excessive relief valve discharges, and with an add-on kit, can notify facility personnel via BMS, cellular, or Wi-Fi. Its lightweight, compact design and short lay length facilitate easy installation and maintenance. The assembly offers a maximum working pressure of 175 psi and a temperature range of 33°F to 110°F.

Help Me Connect

Flood Sensor Connectivity

  • An add-on sensor connection kit is required to activate the flood sensor and enable communication.
  • Without the connection kit, the flood sensor is a passive component with no communication.
  • The flood sensor is compatible with BMS (Building Management Systems) and cellular network communication when paired with an add-on connection kit.
  • It integrates with the Sensor Control Monitor to deliver maintenance alerts to BAS via RS-485 Modbus or the Nexa platform through Wi-Fi connectivity.
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Additional Details

This 8 inch lead free reduced pressure zone backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and water of non-potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure. It is ideal for protection in continuous pressure piping applications and at cross-connections identified as health hazards and from other contaminants found at the service line entrance.

Key Features

  • Features a flood sensor with SentryPlus Alert technology to detect continuous discharge from the relief valve
  • Stainless steel body is half the weight of competitive designs, reducing installation and shipping costs
  • Short end-to-end dimensions make retrofitting easy
  • Cam-check assembly provides maximum flow at low pressure drop
  • Compact modular design facilitates easy maintenance with a single access cover for in-line repairs
  • Corrosive resistant stainless steel relief valve features a balanced rolling diaphragm to eliminate sliding seals and lower maintenance costs
  • No special tools required for servicing
  • Equipped with resilient seated outside stem and yoke (OSY) shutoff valves and test cocks

Flood Sensor Technology

  • An add-on sensor connection kit is required to activate the flood sensor and extend flood monitoring.
  • Integrates with the Sensor Control Monitor to deliver maintenance alerts to BAS via RS-485 Modbus or the Nexa platform by Wi-Fi connectivity.
  • Compatible with BMS and cellular network communication through an add-on sensor connection kit.

Specifications

General

  • Size: 8 inch
  • Series: 4000SS
  • Body Material: 300 Series Stainless Steel
  • Check Assembly Material: Noryl®
  • Shutoff Valves: Resilient Seated Outside Stem and Yoke (OSY) Gate Valves
  • Lead Free: Yes (less than 0.25% lead by weight)
  • Flood Sensor: SentryPlus Alert technology
  • Flange Dimension: AWWA Class D

Performance

  • Maximum Working Pressure: 175 psi (12.1 bar)
  • Temperature Range: 33°F - 110°F (0.5°C – 43°C)

Certificates & Approvals

  • AWWA: C511-92
  • ASSE: 1013
  • CSA: B64.5
  • UL Classified
  • FM Approved

FAQs

What is the primary function of the 8 inch Ames 4000SS backflow preventer assembly?

This assembly is designed to protect potable water supplies by preventing the reverse flow of non-potable water or fire protection substances due to backsiphonage or backpressure. It is suitable for continuous pressure piping applications and health-hazard cross-connections.

What is the benefit of the SentryPlus Alert flood sensor included with this assembly?

The SentryPlus Alert flood sensor detects excessive water discharges from the relief valve, providing early notification of potential flooding events. When activated with an add-on connection kit, it can relay alerts to facility personnel.

Is an add-on connection kit necessary for the flood sensor to function?

Yes, an add-on connection kit is required to activate the flood sensor and enable communication. Without it, the flood sensor remains a passive component with no external communication.

What materials are used for the main components of this backflow preventer?

The main valve body and all internal metal parts are constructed from 300 Series stainless steel for long-term corrosion resistance and strength. The check assembly is made of Noryl®.

What are the maximum operating pressure and temperature for this unit?

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 – 43°C).

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