2" (Magnum 20) Kit (DC)
Backflow Direct's 2" Magnum 20 Double Check DC DCA Backflow Prevention Valve Kit
 
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The 2" (Magnum 20) Kit is a double check backflow valve that prevents non-health hazard pollutants from entering a potable water supply system when backpressure and/or backsiphonage conditions occur. This product is designed for irrigation, plumbing, & some waterworks applications. The shut off valves do not include electronic alarm switches.

2" (Magnum 20) Kit Includes:
  • (1) 2½" Magnum 20
  • (2) 2½" Groove Couplings
  • (2) 2" NPT x 2½" Groove Adapter
End connections are union type stainless steel 2” female NPT threads for ease of installation. Entire valve housing is constructed of stainless steel (including shut off valves) for industry leading corrosion resistance.

The smallest, lightest, most economical, best performing, and only all stainless steel backflow preventer. Period.

ALL APPROVALS APPLY TO 2½" MAGNUM 20

Approvals

Approved in the Horizontal & Vertical Up Orientation.
This Product is NOT UL or FM Approved

10% DISCOUNT ON MAGNUM ORDERS MORE THAN $5,000!

MSRP: $1,119.00
Pro Price: $889.00


Product Code: MAG-2020


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Specifications Technology Downloads
 

The Deringer 20 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.

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 Performance

Measures & Materials

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

Engineering & Specifications

The Magnum 20(x) Double Check 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. 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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