6 DERINGER 20GX (DC)

Item Number: D-6020GX
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$5,728.84
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Deringer
  • 6 inch Deringer 20GX Double Check Valve
  • Lead Free 304 Stainless Steel Housing
  • Working Pressure: 10-175 psi
  • Temperature Range: 33°F - 140°F
  • Patented Dual-action check modules for low and high flow
  • Inline serviceable OS&Y gate valves
  • AWWA C510-07 and NSF/ANSI 372 Compliant
  • Approved for horizontal and vertical installation

Description

The 6 inch Ames Deringer 20GX Low Head Loss Double Check Valve Assembly protects potable water from non-health hazard pollutants caused by backpressure and backsiphonage. Featuring a 304 stainless steel body, inline serviceable OS&Y gate valves with tamper switch grooves, and patented Dual-Action™ check modules, it ensures high performance across all flow rates. With a 10-175 psi working pressure and a 33°F-140°F temperature range, this lead-free device is approved for horizontal and vertical installations, making it ideal for fire protection, waterworks, and irrigation applications. Item number D-6020GX.

Help Me Connect

The 6 inch Deringer 20GX Double Check Valve Assembly is designed for straightforward installation into your piping system.

  • The assembly incorporates OS&Y gate valves with flanged ends that conform to ANSI B16.1 Class 125.
  • These flanged valve ends connect to the central check valve body via flexible groove couplings, which are UL/FM approved.
  • The overall connection to your system is via these grooved end connections, ensuring a secure and reliable fit for various applications.
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Additional Details

This 6 inch Ames Deringer™ 20GX Low Head Loss double check valve backflow preventer assembly is engineered to safeguard potable water systems from non-health hazard pollutants caused by backpressure and/or backsiphonage conditions.

The Deringer 20GX features an extra large body and oversized checks for lower head loss and extreme performance, making it suitable for continuous pressure service.

Features

  • Stainless steel housing and components ensure durability
  • Patented Dual-action™ check modules provide high performance at both low (poppet action) and high (swing action) flow rates
  • Equipped with inline serviceable OS&Y gate valves (AWWA C509/UL/FM resilient seated)
  • Stem includes a tamper switch groove for supervisory monitoring
  • Includes tamper-resistant test cocks for reliable testing
  • Utilizes silicone elastomer check discs and Noryl® Polymer (NSF) check seats for dependable sealing
  • Designed with flanged ends (ANSI B16.1 Class 125) connecting to the body via flexible groove couplings (UL/FM)
  • Approved for both horizontal and vertical applications

Specifications

General

  • Product Type: Double Check Valve Assembly
  • Model: 20GX Deringer™
  • Size: 6 inch
  • Lead Free: Yes
  • Installation: Horizontal or Vertical

Performance

  • Working Pressure: 10 - 175 psi
  • Temperature Range: 33°F - 140°F
  • Head Loss: Low

Materials

  • Valve Housing: 304 Stainless Steel
  • Valve Cover: 304 Stainless Steel
  • SOV Disks: EPDM/304SS
  • SOV Shafts: 304 Stainless Steel
  • SOV Bearings: Teflon® fluoropolymer/Bronze
  • Non-wetted Bolts: Grade 8 Zinc Plated
  • Check Disks: Silicone (NSF)
  • Wetted Fasteners: 18-8 Stainless Steel
  • Check Springs: 17-7 Stainless Steel
  • Check Pins: 17-7/18-8 Stainless Steel
  • Check Seats: Noryl® Polymer (NSF)
  • O-rings: Buna-N (NSF)

Connections

  • End Connections: Flanged and Grooved
  • Flange Standard: ANSI B16.1 Class 125

Certificates & Approvals

  • AWWA Standard: C510-07 Compliant
  • NSF/ANSI Standard: 372 (Lead Free)
  • UL Classified: Yes
  • FM Approved: Yes
  • ASSE Standard: 1015
  • USC Approved: Yes

FAQs

What is the primary function of the 6 inch Deringer 20GX Double Check Valve Assembly?

This assembly is designed to prevent non-health hazard pollutants from entering potable water supply systems. It protects against backflow caused by both backpressure and backsiphonage conditions.

What kind of check modules does the Deringer 20GX utilize?

The Deringer 20GX features patented Dual-action™ check modules. These modules provide optimal performance by operating as a poppet style check at low flow and a swing style check at high flow.

What are the typical end connections for this backflow preventer assembly?

The assembly features OS&Y gate valves with flanged ends (ANSI B16.1 Class 125). These flanges connect to the main body via flexible UL/FM groove couplings, providing grooved end connections for system integration.

What is the maximum operating pressure and temperature range for the Deringer 20GX?

This double check valve assembly is rated for a working pressure range of 10 to 175 psi (pounds per square inch). Its operating temperature range is 33°F to 140°F.

Is the 6 inch Deringer 20GX approved for both horizontal and vertical installations?

Yes, the Ames Deringer 20GX Double Check Valve Assembly is explicitly approved for installation in both horizontal and vertical orientations, offering versatile placement options.

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