Double Check Assemblies

  • 350XL

    350XL

    Wilkins 350XL composite body backflow assembly is designed for installation on potable water lines to protect against...
  • 950XL / 950XLT / 950XLT2

    950XL / 950XLT / 950XLT2

    Wilkins 950XL is a double check assembly. Production began in 1990. The 3/4"-2" size is a wye pattern glass filled No...
  • 350 / 350A

    350 / 350A

    The Wilkins 350A and 350ADA are double check assemblies. Production of the 2 1/2"-10" began in 1998. he 2 1/2"-12" bo...
  • 350AST

    350AST

    Wilkins 350AST Designed for installation on water lines in fire protection systems to protect against both backsiphon...
  • 450

    450

    Wilkins 450 and 450DA are double check assemblies. Production of the 3/4"-2" began in 2004. The 3/4"-2" use a bronze ...
  • 950 (2.5"-10")

    950 (2.5"-10")

    he Wilkins 950 is a double check valve assembly. Production of the Wilkins 950 began in 1990. The 2 1/2"-10" sizes we...
  • 550 All Sizes

    550 All Sizes

    This model is currenlty obsolete! No parts remain, please call for availability on replacement device: Chicago Offi...

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