Double Block & Bleed TOSV

Triple Offset Segment Valves
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Features

  • Inherently Firesafe primary metal/metal sealing certified to API 607.

  • Zero leakage shut off available in both directions.

  • Replaceable body seat and laminated disc seal.

  • Triple offset Design(non-rubbing)

  • Anti-blowout stem standard.

  • Materials of construction available to NACE requirements.

  • Wafer, lugged, double flanged and buttweld ends available.

  • ANSI 150,300,600,900&1500 with fully rated trims.

  • Quality Assurance System approved to ISO 9001

  • Patented in UK with worldwide patents pending

  • Size range 6Ħħ to 88Ħħ ANSI 150,300 & 600

  • Size range 6Ħħ to 36Ħħ.ANSI 900 & 1500. Large sizes available on request.

The special block and bleed seal configuration { Fig.4 }consists of two metal laminate seals with an intermediate bleed channel which connects to the bleed purge port in the valve body when the disc/segment is in the closed position.

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Dimensions

Typical metal seated Double Block & Bleed TOSV envelope dimensions 6" - 24"
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