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  • 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 utilize a bronze body with a plastic check. There were two body styles available, Wye pattern or top entry design. The wye pattern was discontinued in 2002. In 1994 replaceable seats became standard. The rubber repair kits are different between the replaceable and non-replaceable seat versions. A seat removal tool is needed to replace the seats. The check springs are not contained.

    This series is currently Obsolete!

  • 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 bronze. The 2 1/2"-4" sizes use a single body while the 6"-10" sizes have a split 2 piece body design. Check seats are replaceable on these sizes. A seat removal tool is needed to replace the check seats. Check springs on the 2 1/2"-10" sizes are contained when the covers are removed.

    This series is currently Obsolete!

  • 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 Cartridge Checks with replaceable seats & Reversible Silicone Seat Discs, ½” to 2” with Apollo ball valve shutoffs with SS handles + trim

  • 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" & 12". Short Inline Configuration, Center Stem Guided TriForceā„¢ Check Valves for Low Pressure Drop. Butterfly, OSY, NRS Shutoff Options. 2-1/2"- 12".
  • 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 Epoxy Ductile Iron 10" & 12". Flow Configurations in Vertical Up/Vertical Down, or Vertical Up/Vertical Up. Center Stem Guided TriForceā„¢ Check Valves for Low Pressure Drop. Butterfly, OSY, NRS Shutoff Options. 2-1/2"-12".
  • 4S-103 Series
  • DC-4SG

    DC-4SG

    Apollo started production of the 4SG Series Double check assembly. Production began in 1998. The 1/2" assembly utilizes a bronze body. The checks are a modular in-line design. The check modules are not field repairable and must be replaced as a whole check module. The body on 2 1/2"-10" are constructed of ductile iron which is fused epoxy coated. The 2 1/2"-6" checks are a swing style and are modular in construction and made of glass filled Noryl plastic. The check disc is replaceable. The check springs are contained when the cover is removed. The 8"-10" checks are modular bronze. The check springs are contained when the cover is removed.
  • 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 in-line design. The check modules are not field repairable and must be replaced as a whole check module. The body on 2 1/2"-10" are constructed of ductile iron which is fused epoxy coated. The 2 1/2"-6" checks are a swing style and are modular in construction and made of glass filled Noryl plastic. The check disc is replaceable. The check springs are contained when the cover is removed. The 8"-10" checks are modular bronze. The check springs are contained when the cover is removed.

    This series is currently Obsolete!