4" Deringer 50

 
Alternative Views:


The 4" Deringer 50 Reduced Pressure Detector Assembly prevents non-health hazard pollutants and hazardous contaminants from entering a potable water supply system when backpressure and/or backsiphonage conditions occur. Used primarily on fire sprinkler systems when monitoring of unauthorized water use is required.
    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: $2,039.00
Pro Price: $1,699.00

Quantity in Stock:999999998
Product Code: 4050

Choose Your Bypass Options

:
GALLONS
CUBIC FEET

Qty:
Specifications Technology Downloads
 
Untitled Document
2.5 Deringer 50 Title
4 Deringer 50 Cutaway
The Deringer 50 Reduced Pressure Detector Assemby prevents non-health hazard pollutants from entering a potable water supply system when backpressure and/or backsiphonage conditions occur. Used primarily on fire sprinkler systems when monitoring of unauthorized water use is required.

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
The type-II bypass assembly is a new technology to the backflow industry and is used on Backflow Direct's Deringer 50 (RPDA-II).

As more manufacturers begin to utilize this technology it is only a matter of time before it’s widely used and is more commonly seen than the old type-I bypass assembly.

We created this video to provide a clear explanation on how the type-II bypass provides the EXACT same level of protection as a type-I bypass as well as some of the similarities and differences between the two.
Flow Chart Title
Deringer 30 Flow Chart
Measures & Materials Title
4 Deringer 50 Deminsions
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
Bypass: Lead Free Bronze   RV Housing: 304 Stainless Steel   RV Hose: Braided Stainless Wire
Engineering Specifications Title
The Deringer 50 Reduce Pressure Detector Assembly (RPDA-II) valve shall utilize two independent 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. All bypass assembly components shall be lead free and include a meter registering either gallons or cubic feet, a single check valve and required test cocks. The Relief Valve shall operate using only static seals (zero dynamic/sliding seals). All wetted surface Relief Valve components shall be constructed of stainless steel. Assembly shall be serviceable without special tools and approved for both horizontal and vertical applications.


Share your knowledge of this product. Be the first to write a review »
Copyright ©   BackFlowDirect LLC, All Rights Reserved.