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Acetal Black Single Check Valves 4mm tube

Part Number: HCVU-0404B
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The check valve allows fluid to flow one way and prevents reverse flow. Manufactured in acetal copolymer with food grade EPDM O-ring, these fittings are suitable for pure water, potable liquids and other beverage applications.


  • Allows fluid to flow in one direction
  • Prevents back flow
  • Compact size for use in small spaces
  • Compatible with plastic or copper OD sized tubing
  • Food Quality and suitable for potable liquids and pure water applications
  • Acetal body with food grade EDPM O-Ring
  • Made with Lead Free materials

California residents Prop 65 Warning
This product contains materials known to the State of California to cause cancer and birth defects or other reproductive harm. www.p65warnings.ca.gov