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  Conbraco 4A-105-T2F 1 in. DCA Backflow Preventer
Conbraco CDC4A-105-T2F - 1 inch Double Check Valve Assembly

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Product Code: CDC4A-105-T2F

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Conbraco CDC4A-105-T2F - 1 inch double check assembly
Conbraco CDC40-105-T2F - 1 inch double check assembly

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Product Information


The Apollo® Model DC4A Double Check Valves prevent contamination of the potable water supply due to back-siphonage or backpressure from substances that are objectionable to the potable water supply, but non-health hazards. The top accessed modular check valve cartridges provide captured springs, replaceable seats and reversible silicone seat discs. This Made in America assembly features Apollo® ball valves with stainless steel handles and nuts as standard and carries the five-year Apollo® factory warranty.

  • Low pressure loss documented by independent approval agencies
  • Easily removable modular check valve cartridge
  • Captured stainless steel springs
  • Apollo® ball valves w/ SS handles & nuts standard
  • Top-mounted test cocks for easy testing
  • No special tools required
  • Chloramine-resistant elastomers
  • Designed, cast, machined, assembled and tested IN THE USA
1/2" 11 7-3/8" 3-1/4" 2-1/2"
3/4" 12-3/4" 8-1/2" 3-1/2" 3"
1" 14-5/8" 9-1/2" 4" 3-1/4"
1-1/4" 18-5/8" 11-3/4" 4-1/2" 4-3/4"
1-1/2" 18-3/4" 11-5/8" 4-1/2" 4-3/4"
2" 21-1/8" 12-3/4" 5" 5-3/8"
ASSE 1015 - Horizontal and Vertical Flow Up (½"-2")
CSA B.64.5 - Horizontal and Vertical Flow Up (½"-2")
Performance Rating
Maximum Working Pressure 175 psi
Temperature Range 33 ° F – 180 ° F
Material Specifications
Part Name Material
Body, Caps, Ball Valve Shutoffs, Test cocks Bronze C84400
Check Valve Cartridges Glass-Filled PPO
Springs 300 Series Stainless Steel
Seat Discs Chloramine-resistant Silicone
O-rings Chloramine-resistant EPDM
Conbraco DC4a Double Check Assembly Diagram
FLOW CURVES, Curves developed from independent approval agencies actual tests – Consult factory for details.
¦ indicates rated flow as determined by approval agencies, 7.5 ft/sec is the typical maximum Plumbing system flow rate.
Conbraco DC4A Double Check Valve Assembly Pressure Loss Curve
Conbraco CDC4A-104-T2F 3/4 in. DCA Backflow Preventer

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