6" Deringer 20x

 
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The 6" Deringer 20x Double Check prevents non-health hazard pollutants from entering a potable water supply system when backpressure and/or backsiphonage conditions occur.
    The smallest,
    lightest,
    most economical,
    best performing,
    and only all stainless steel
    backflow preventer. period.
Approvals

Important Note: Install with FLEX Couplings or Flange Adapters Only.
DO NOT use RIDGED Couplings!

MSRP: $1,919.00
Pro Price: $1,599.00

Quantity in Stock:9999981

Product Code: 6020X


Qty:
Specifications Technology Downloads
 
Untitled Document
Deringer 20 Title
6 Deringer 20 Cutaway
The Deringer 20x Double Check Valve Assembly is designed to prevent non-health hazard pollutants from entering the potable water supply system caused by backpressure and/or backsiphonage conditions.

Approvals
  Maximum Working Pressure: 175psi (12.1 bar)  
  Temperature Range: 33° - 140°F (1° - 60°C)  
  End Connections    
  - IPS Groove for Steel Pipe: AWWA C606  
  - Flange Adapters: ANSI B16.1 Class 125  
  Lead Free: 0.25% Maximum by Weight  
Flow Chart Title
6 Deringer 20x Flow Chart
Measures & Materials Title
6 Deringer 20 Dimensions
Weight: 124lbs (56kg)
Valve Housing: 304 Stainless Steel   SOV Bearings: Teflon/Bronze   Check Springs: 17-7 Stainless Steel
Valve Cover: 304 Stainless Steel   Non Wetted Bolts: Grade 8 Zinc Plated   Check Pins: 17-7/18-8 Stainless Steel
SOV Disks: EPDM/304SS:   Wetted Fasteners: 18-8 Stainless Steel   Check Seats: Noryl Polymer
SOV Shafts: 304 Stainless Steel   Check Disks: Silicone   O-Rings: Buna-N
Engineering Specifications Title
The Deringer 20x Double Check (DC) valve shall utilize two independent Dual Action Check modules and two integral resiliently seated shut-off valves all of which shall be contained within a single rigid valve housing constructed entirely of 304 stainless steel. Both integral shutoff valves shall include pre-wired supervisory tamper switches contained within a weatherproof actuator housing approved for both indoor and outdoor use. Dual Action Check modules shall operate as a “poppet style” check under low flow conditions, operate as a “swing style” check under high flow conditions and utilize replaceable silicone elastomer sealing discs. Assembly test cocks shall be handle-less and operate via a tamper resistant actuator. Assembly shall have a single full access service port and cover with an “inline” replaceable elastomer seal. Assembly shall be serviceable without special tools and approved for both horizontal and vertical applications.


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