Meridian™ API 6D Check Valve

API 6D Check Valves

The Meridian™ 3 Piece Forged Trunnion Ball Valve is engineered for the most demanding pipeline applications. Available in Double Block & Bleed (DBB) and Double Isolation & Bleed (DIB) configurations, with full SIL 3 certification and industry-leading 48-month warranty coverage.

2" – 56"  |  DBB & DIB  |  SIL 3 Capable

product specifications

Meridian valves

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General Features

  • Firesafe design
  • Standard valves meet NACE
  • Full-port piggable
  • In-line repairable
  • Bleed Plug on cover (to confirm pressure relief prior to servicing)
  • Support feet on 6” and larger
  • Lifting eye bolts on 4” and larger
  • Suitable for horizontal and vertical (flow-up) installation. Engineering review of process conditions required for vertical installation.
  • Raised boss provided for optional drain plug
  • Standard document package BS/EN 10204-3.1
  • All O-rings are AED (anti-explosive decompression) design

Cover Features

  • Independent dual cover seals (non-pressure seal design)
  • Pressure seal cover standard for larger/high pressure valves
    • 10” and larger ASME 1500
    • 8” and larger ASME 2500

Seat Design Features

  • Full stainless steel seat (ASTM A182 F316)
  • Forged steel disc (cast for sizes >4”) with 316 overlay on sealing area
  • Replaceable O-ring in seat protected from upstream flow
  • Dovetail groove to keep O-ring firmly in place
  • Threaded in replaceable seat

Optional Features

  • External lever arm and weight (design changes apply, additional information available on request)
  • Tapped drain plug

technical documents

CATALOGUE

Check Valve

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MANUAL

Check Valve IOM

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Reference standards

Design Standards

API 6D

CSA Z245.15

face to face

ASME B16.10

flange

ASME B16.5

Marking

MSS SP-25

Inspection

API 598

pressure and temp.

ASME B16.34

quality

MSS SP-55

Fire Safe Design

ISO 10497

sour

NACE MR0175

ISO 15156

pressure testing

API 6D