8 DERINGER 40G (RP)

Item Number: D-8040G
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$12,017.03
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Deringer
  • Size: 8 inch
  • Weight: 503.0 lb
  • Body Material: 304 Stainless Steel
  • Operating Pressure: 10 - 175 psi
  • Temperature Range: 33°F - 140°F
  • End Connections: Flanged ANSI B16.1 Class 125
  • Dual-Action™ check module (low and high flow)
  • Flood sensor with SentryPlus Alert® technology
  • Certified: AWWA C511-07, NSF/ANSI 372, UL, FM, ASSE 1013

Description

The 8 inch Ames Deringer 40G Reduced Pressure Zone Backflow Preventer Assembly is designed to protect potable water systems from hazardous contaminants and pollutants caused by backpressure or backsiphonage. Featuring a durable 304 stainless steel body and inline serviceable OS&Y gate valves, this assembly ensures reliable performance across a wide flow range. It operates within a 10-175 psi working pressure and 33°F-140°F temperature range. Key features include a patented Dual-Action™ check module and a SentryPlus Alert® flood sensor for enhanced safety. The unit is UL Classified, FM Approved, and ASSE 1013 compliant, utilizing flanged ANSI B16.1 Class 125 end connections for installation.

Help Me Connect

Connections

  • The 8 inch Deringer 40G Reduced Pressure Zone assembly features flanged end connections.
  • These flanges conform to the ANSI B16.1 Class 125 standard.
  • Ensure compatibility with corresponding ANSI B16.1 Class 125 flanged pipework or fittings for proper installation.
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Additional Details

The 8 inch Ames Deringer™ 40G Reduced Pressure Zone assembly is designed to prevent hazardous contaminants and non-health hazard pollutants from entering a potable water supply system. It effectively safeguards against both backpressure and backsiphonage conditions.

This Deringer 40G assembly is suitable for continuous pressure service and features inline serviceable OS&Y gate valves and a robust stainless steel body. It incorporates True-Seal™ and Dual-Action™ checks for reliable performance across both low- and high-flow rates.

Key Features

  • Stem includes tamper switch groove for enhanced security.
  • Features in-line serviceable gate valves.
  • Constructed with a durable stainless steel housing.
  • Equipped with tamper-resistant test cocks.
  • Patented Dual-action™ second check module provides poppet action at low flow and swing action at high flow.
  • Poppet action first check for more reliable relief valve closure.
  • Includes a stainless steel braided wire sensing line.
  • Balanced chamber Relief Valve with no sliding seals.
  • AWWA C509/UL Classified/FM Approved resilient seated gate valves (OS&Y).
  • Utilizes silicone elastomer check discs.
  • Flexible groove coupling UL Classified/FM Approved (between body and gate valves).
  • Main end connections are flanged, conforming to ANSI B16.1 Class 125.
  • Contains a flood sensor with SentryPlus Alert® technology to detect excessive water discharges from the relief valve.
  • Prewired supervisory switches for monitoring.

Specifications

General

  • Size: 8 inch
  • Body Material: 304 Stainless Steel
  • Valve Cover Material: 304 Stainless Steel
  • Operating Pressure Range: 10 - 175 psi
  • Operating Temperature Range: 33°F - 140°F
  • End Connection Type: Flanged
  • End Connection Standard: ANSI B16.1 Class 125
  • Application: Fire Protection, Waterworks, Plumbing, and Irrigation
  • Lead Content: Less than 0.25% by weight (Lead Free)

Internal Components

  • SOV Disks Material: EPDM/304SS
  • SOV Shafts Material: 304 Stainless Steel
  • RV Spring Material: 302 Stainless Steel
  • SOV Bearings Material: PTFE Fluoropolymer/Bronze
  • Non-wetted Bolts Material: Grade 8 Zinc Plated
  • Check Disks Material: Silicone (NSF)
  • Wetted Fasteners Material: 18-8 Stainless Steel
  • RV Housing Material: 304 Stainless Steel
  • Check Springs Material: 17-7 Stainless Steel
  • Check Pins Material: 17-7/18-8 Stainless Steel
  • Check Seats Material: Noryl® Polymer (NSF)
  • O-rings Material: Buna-N (NSF)
  • RV Sense Material: Braided Stainless Steel Wire

Certificates & Approvals

  • AWWA C511-07 Compliant
  • NSF/ANSI 372
  • UL Certified
  • FM Approved
  • ASSE 1013
  • USC Approved

Dimensions & Weight (approximate)

  • Overall Length (L): 45.0 in (1143 mm)
  • Overall Height (Ht): 39.4 in (1001 mm)
  • Height to Body Bottom (Hb): 11.5 in (292 mm)
  • Total Height (Ht+Hb): 51.0 in (1295 mm)
  • Overall Width (W): 14.6 in (429 mm)
  • Weight: 455 lb (206 kg)

FAQs

What is the primary function of the Ames Deringer 40G Reduced Pressure Zone assembly?

Its primary function is to prevent hazardous contaminants and non-health hazard pollutants from entering a potable water supply system due to backpressure and/or backsiphonage conditions. It protects the water supply for various applications including fire protection, waterworks, plumbing, and irrigation.

What type of end connections does this 8 inch Deringer 40G model use?

This 8 inch Deringer 40G model features flanged end connections that conform to the ANSI B16.1 Class 125 standard. These are visible on the main body of the assembly.

What is the maximum operating pressure and temperature for this backflow preventer?

The maximum operating pressure for this unit is 175 psi (12 bar). It is designed to operate within a temperature range of 33°F to 140°F.

Does this backflow assembly include a flood detection feature?

Yes, this backflow assembly contains a flood sensor with SentryPlus Alert® technology. When activated with an add-on sensor connection kit, it detects excessive water discharges from the relief valve and can send alerts to notify personnel.

What are the main materials used in the construction of the Deringer 40G?

The valve housing, valve cover, and relief valve housing are all constructed from 304 Stainless Steel. Key internal components like check disks use Silicone (NSF), and O-rings are Buna-N (NSF).

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