3 DERINGER 30 GPM

Item Number: D-3030-GPM
1 1
$6,230.00
In Stock (10)
Estimated transit time: 2 to 5 Business Days Eligible for Express Shipping

Brand - Deringer
  • Nominal Size: 3 inch
  • Weight: 56.0 lb
  • Working Pressure: 10 – 175 psi
  • Housing Material: 304 Stainless Steel
  • Integral Shutoff Valves: Yes
  • Check Module Type: Dual-action™ (Poppet/Swing)
  • Bypass Meter: GPM
  • End Connections: IPS Groove, Flange Adapters
  • Certifications: AWWA C510-07, NSF/ANSI/CAN 61/372, UL Listed, FM Approved, ASSE 1048

Description

The Ames Deringer 30 Double Check Detector Backflow Preventer Assembly, DCDA-II, is a 3-inch device designed to protect potable water supplies from non-health hazard pollutants. This backflow preventer is essential for fire sprinkler systems requiring unauthorized water use monitoring, featuring a GPM meter on its Type II bypass. It includes integral 304 stainless steel housing, patented Dual-action™ check modules for reliable low and high-flow performance, and prewired supervisory switches. Approved for both horizontal and vertical installation, it operates within a 10-175 psi working pressure range and is Lead Free certified. Item number D-3030-GPM.

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Connections

  • The assembly features IPS Grooved Ends for steel pipe connections conforming to AWWA C606.
  • It is also compatible with Flange Adapters designed to ANSI B16.1 Class 125 standards.
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Additional Details

The 3 inch Ames Deringer™ 30 Double Check Detector Backflow Preventer Assembly (DCDA-II) prevents non-health hazard pollutants from entering a potable water supply system due to backpressure or backsiphonage conditions. It is primarily used on fire sprinkler systems where monitoring of unauthorized water use is required.

This assembly features integral butterfly shutoff valves, tamper-resistant test cocks, and patented Dual-Action™ checks for optimal performance across various flow rates. Its Type II bypass, equipped with a GPM meter, specifically monitors water usage.

Features

  • Integral shutoff valves for indoor or outdoor application
  • 100% stainless steel housing
  • Tamper-resistant test cocks
  • Patented Dual-action™ check modules:
    • Poppet action at low flow
    • Swing action at high flow
  • Lead Free Bronze bypass components
  • GPM bypass meter
  • DCDA-II single check bypass
  • Silicone elastomer check discs
  • Prewired supervisory switches
  • Flange adapters available
  • IPS grooved ends

Specifications

General

  • Product Type: Double Check Detector Backflow Preventer
  • Series: Deringer™ 30 DCDA-II
  • Nominal Size: 3 inch
  • Working Pressure: 10 – 175 psi
  • Temperature Range: 33°F - 140°F
  • Bypass Meter: GPM (Gallons Per Minute)

Materials

  • Valve Housing: 304 Stainless Steel
  • Valve Cover: 304 Stainless Steel
  • SOV Disks: EPDM/304SS
  • SOV Shafts: 304 Stainless Steel
  • Bypass Spring: 302 Stainless Steel
  • SOV Bearings: PTFE Fluoropolymer/Bronze
  • Non-wetted Bolts: Grade 8 Zinc Plated
  • Check Disks: Silicone (NSF)
  • Wetted Fasteners: 18-8 Stainless Steel
  • Bypass Components: Lead Free Bronze
  • Check Springs: 17-7 Stainless Steel
  • Check Pins: 17-7/18-8 Stainless Steel
  • Check Seats: Noryl® Polymer (NSF)
  • O-rings: Buna-N (NSF)
  • Bypass Internals: ABS Polymer (NSF)

Connections

  • End Connections: IPS Groove, Flange Adapters
  • Flange Adapter Standard: ANSI B16.1 Class 125

Certificates & Approvals

  • AWWA: C510-07 Compliant
  • NSF/ANSI/CAN: 61, 372
  • UL Certified: Health Effects
  • Lead Free: Yes (less than 0.25% lead by weight)
  • FM Approved
  • ASSE: 1048
  • USC Approved

FAQs

What is the primary purpose of the Deringer™ 30 Double Check Detector Assembly?

The primary purpose is to prevent non-health hazard pollutants from entering a potable water supply system due to backpressure or backsiphonage conditions. It is mainly used in fire sprinkler systems to monitor unauthorized water usage.

What types of end connections are supported by this 3-inch Deringer™ 30 assembly?

This assembly supports IPS Grooved Ends for steel pipe connections and can also accommodate Flange Adapters conforming to ANSI B16.1 Class 125 standards.

What is the maximum working pressure for this backflow preventer?

The maximum working pressure for the Ames Deringer™ 30 Double Check Detector Backflow Preventer Assembly is 175 psi.

What materials are used for the main valve housing and internal components?

The main valve housing, valve cover, SOV shafts, and SOV disks are constructed from 304 Stainless Steel. Internal check disks are Silicone (NSF), and bypass components are Lead Free Bronze.

Does this product include a bypass meter, and if so, what type?

Yes, the Deringer™ 30 includes a bypass assembly with a meter that registers in Gallons Per Minute (GPM).

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