4" Deringer 40

 
Alternative Views:


The 4" Deringer 40 Reduced Pressure Valve 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: $1,439.00
Pro Price: $1,199.00

Quantity in Stock:9999982

Product Code: 4040


Option:
Relief Valve ships attached to Backflow [Add $80.00]
If your water authority requires the relief valve to be attached to the Backflow Preventer at the time of shipment please select this option.


Qty:
Specifications Technology Downloads
 
Untitled Document
Deringer 40 Title
4 Deringer 40 Cutaway
The Deringer 40 Reduced Pressure Valve 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
4 Deringer Flow Chart
Measures & Materials Title
4 Deringer 40 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
RV Housing: 304 Stainless Steel   RV Hose: Braided Stainless Wire      
Engineering Specifications Title
The Deringer 40 Reduce Pressure (RP) 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. 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.