Double Check Assemblies

  • 4S-103 Series

    4S-103 Series

     Downloads: Specification Guide Installation, Maintenance, & Repair Guide  
  • DC-40 / DC-40LF (1/2" - 2")

    DC-40 / DC-40LF (1/2" - 2")

    Double check assembly. Production began in 1989. The 2 1/2"-10" sizes were discontinued in 2003. The 3/4"-2" sizes ut...
  • DC4A / DCLF4A (1/2" - 2")

    DC4A / DCLF4A (1/2" - 2")

    Apollo started production of the 4ALF-100 Series in 2009. Top Entry Double Check Valve Assembly, Bronze Body, Modular...
  • DC4S (2-12" - 10")

    DC4S (2-12" - 10")

    Double check assembly. Production began in 1998. The 1/2" assembly utilizes a bronze body. The checks are a modular i...
  • DC-4SG

    DC-4SG

    Apollo started production of the 4SG Series Double check assembly. Production began in 1998. The 1/2" assembly utiliz...
  • DC-40 (2-1/2" - 10")

    DC-40 (2-1/2" - 10")

    The 2 1/2"-10" sizes are a ductile iron body that is fused epoxy coated. Most internal hardware parts are made of bro...
  • DC4A / DCLF4A (2-1/2"-12")

    DC4A / DCLF4A (2-1/2"-12")

    4A-100 started production in 2009. Domestic Stainless Steel Body 2-1/2"-8", FDA Fusion Bonded Epoxy Ductile Iron 10" ...
  • DC4AN / DCLF4AN (2-1/2" - 12")

    DC4AN / DCLF4AN (2-1/2" - 12")

    Apollo started production of the 4ANLF Series in 2009. Domestic Stainless Steel Body 2-1/2"-8", FDA Fusion Bonded Epo...

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