2 1/2 DERINGER 30 GPM

Item Number: D-2530-GPM
1 1
$3,124.16
Limited Stock (8)
Estimated transit time: 2 to 5 Business Days Eligible for Express Shipping

Brand - Deringer
  • Nominal Size: 2 1/2 inch
  • Weight: 55.0 lb
  • Housing Material: 304 Stainless Steel
  • Bypass Meter Type: GPM
  • Max Working Pressure: 175 psi
  • End Connections: IPS Grooved
  • Dual-action™ Check Modules (Poppet & Swing)
  • Lead Free* Construction (Wetted surface < 0.25% lead)
  • Certified to AWWA C510-07, NSF/ANSI/CAN 61, UL, ASSE 1048

Description

The Ames Deringer 30 Double Check Detector Backflow Preventer Assembly, DCDA-II, with a 2 1/2 inch nominal size, prevents non-health hazard pollutants from entering potable water systems due to backpressure or backsiphonage. Primarily for fire sprinkler systems requiring unauthorized water use monitoring, it includes a GPM bypass meter. Key features include a durable 100% stainless steel housing, integral butterfly shutoff valves, prewired supervisory switches, and patented Dual-action™ check modules for reliable performance at varied flow rates. This Lead Free* unit is certified to AWWA C510-07, NSF/ANSI/CAN 61, UL, and ASSE 1048, and handles a maximum working pressure of 175 psi.

Help Me Connect

This Deringer™ 30 backflow preventer features IPS grooved ends for connection to steel pipes, compliant with AWWA C606. For other connection types, flange adapters designed to ANSI B16.1 Class 125 are available separately.

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Additional Details

This 2 1/2 inch Ames Deringer™ 30 Double Check Detector Assembly (DCDA-II) is designed to prevent non-health hazard pollutants from entering a potable water supply system due to backpressure and/or backsiphonage. It is primarily used on fire sprinkler systems to monitor unauthorized water usage.

Key Features

  • 100% stainless steel housing for durability and corrosion resistance.
  • Integral Eccentric-Seal™ butterfly shutoff valves for shorter lay length and easy installation, approved for both indoor and outdoor use.
  • Prewired supervisory switches for enhanced system monitoring.
  • Patented Dual-action™ check modules provide high performance with poppet action at low flow and swing action at high flow.
  • Tamper-resistant test cocks for secure testing.
  • Lead Free* bronze bypass components with a GPM bypass meter for monitoring unauthorized water usage.
  • Utilizes silicone elastomer check discs for reliable sealing.
  • Designed for continuous pressure service.
  • Equipped with IPS grooved ends for connections.

Specifications

  • Nominal Size: 2 1/2 inch
  • Model: Deringer™ 30 DCDA-II
  • Bypass Meter: GPM

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)

Performance

  • Maximum Working Pressure: 175 psi (12 bar)
  • Temperature Range: 33°F – 140°F

Connections

  • End Connections: IPS Grooved
  • Flange Adapters: ANSI B16.1 Class 125 (available)

Dimensions & Weight (2 1/2 inch)

  • Length (L): 18.7 inches (475 mm)
  • Overall Height (H): 10.0 inches (254 mm)
  • Overall Width (W): 11.0 inches (279 mm)
  • Height (Vertical Installation, Ht): 7.1 inches (180 mm)
  • Height (Horizontal Installation, Hb): 2.9 inches (74 mm)
  • Weight: 47 lbs (21 kg)

Certificates & Approvals

  • AWWA C510-07 Compliant
  • NSF/ANSI/CAN 61 Certified Health Effects
  • UL Certified to NSF/ANSI/CAN 372
  • LEAD FREE (wetted surface contains less than 0.25% of lead by weight)
  • ASSE 1048 Approved
  • USC Approved

FAQs

What is the primary function of the Ames Deringer 30 Double Check Detector Assembly?

This DCDA-II backflow preventer prevents non-health hazard pollutants from contaminating the potable water supply due to backpressure or backsiphonage. It is specifically designed for fire sprinkler systems where monitoring unauthorized water usage is required.

What type of bypass meter is included with this assembly?

The Deringer 30 DCDA-II includes a GPM (Gallons Per Minute) bypass meter. This meter is used to detect and monitor any unauthorized water usage from the fire sprinkler system.

What are the main material components of this backflow preventer?

The main valve housing, valve cover, and SOV shafts are constructed from 304 Stainless Steel for durability and corrosion resistance. The check disks are made of Silicone (NSF) and bypass components from Lead Free Bronze.

What is the maximum working pressure and temperature range for this unit?

This Deringer 30 DCDA-II is rated for a maximum working pressure of 175 psi (12 bar). It can operate effectively within a temperature range of 33°F to 140°F.

What certifications and approvals does this backflow preventer have?

This assembly is AWWA C510-07 Compliant, UL Certified to NSF/ANSI/CAN 61 and 372 (Lead Free), and ASSE 1048 Approved. It also holds USC approval.

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