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BS 1868 Pressure Self Seal Bonnet WC6 Lift Type Check Valve

BS 1868 Pressure Self Seal Bonnet WC6 Lift Type Check Valve

    The YFL pressure seal bonnet check valve is widely used for high temperature high pressure working conditions such as power stations. The YFL pressure seal check valve can be produced according to API 6D, BS 1868 and DIN 3356. 

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  • Features
  • Specification

  • The YFL pressure seal check valve can be swing type or lift type;
  • The YFL API 6D swing check valve can be fully opened;
  • PSB: Pressure seal bonnet;
  • Outside lever and weight for slow closing;
  • Hydraulic control unit weighted mechanical accumulator;
  • Eye bolt available;
  • Spring loaded for lift type check valve;
  • Choice of swing type or lift type disc;
  • Horizontal or vertical installation.

Product range:

  • Size: DN50DN750 2’’ 30’’
  • Pressure rating: PN160PN420 900lbs2500lbs
  • End connection: Flanged RF BW
  • Body materials: WCB WCC LCB LCC WC1 WC6 WC9 C5 C12 C12A CF8 CF3 CF8M CF8C CF3M 4A 5A UNS S31803 SAF 2205 SAF 2507 CD4MCU etc.

Technical standards:

  • Design: API 600 BS1868 DIN3356
  • Face to Face: ASME B16.10 DIN3202 F1/F6
  • Flanged ends: ASME B16.5 ASME B16.47 EN 1092
  • BW ends: ASME B16.25 ASME B31.8 EN12627
  • Test and inspection: API 598 DIN3230 EN12266