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T: 936-588-8350 • F: 936-588-8381 • www.craneenergy.com
Duo-ChekValves
Duo-Chek high performance non-slam check valves are the original Missionwafer check valves introduced to themarket in
the late 50's.They are available in the sizes, pressure classes and configurations you need tomeet themost demanding of
applications.Our product range includes, but is not limited to,
• Sizes: 2" to 72"
• ASMEPressureClass 125 through 2500
• API 6A and 6Dpressure classes
• DIN, JIS, BS,AS, and ISO standards are alsoavailable.
• Wafer, lug, double flanged and extended body styles
• Configurations available in retainerless style.
• BodyMaterials:
Cast Iron,WCBCast Steel,
316StainlessSteel.All alloys.
• Resilient Seat Materials:
EPDM, Buna-N, Neoprene,
Refrigeration-grade elastomer,Viton
• Integral andoverlaidmetal seats also available
• EndConnections:
RaisedFace, PlainFace, Ring Joint,
Weld-End, Hub-End.
IndustryStandards*
API 594
ValveDesign
API 598
ValvePressureTesting& Inspection
ASMEB16.5&B16.47 Flanges
ASMEB16.34
Pressure / TemperatureRatings
API 6D
PipelineValves
API 6A
ProductionValves
(PED) 97/23/EC
PressureEquipment Directive
*Duo-Chekmeets or exceed these industry standards.
Dual plate lightweight design
for efficient seating
and operation.
Long-leg spring action
allows plates to open and
closewithout seat scrubbing.
Springaction closes plates
independently. (6" and larger)
Hinge support sleeve reduces
frictionandminimizeswater
hammer through independent
plate suspension (on larger
sizes).
Duo-Chek–TheHighPerformanceNon-SlamCheckValve
Retainerless valves for critical applications
without pin retainer penetration through
thebody are available inWafer andare
standard inLug andDoubleFlange valves.
