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(Triple Offset Flanged Butterfly Valve, Lug, Flange, Welded End ) (Triple Excentric Flanged Butterfly Valve, Lug, Flange, Welded End) (Double Offset High Performance Butterfly Valve, Lug, Flange, Welded End)

Cryogenic butterfly valve for LNG

Specifications


Standard Compliance:

Basic Design:  API609, BS5155, MSS SP-67, MSS SP-68

Face to Face standard:  ASME B16.10,  BS5155,  API609

Flanged standard: ANSI B16.5 (2”-24”)  ANSI B16.47 (>24”),  BS4505

Butt Welding standard: ANSI B16.25

Test and Inspection standard: API598

Fire-safe design to:  API 607/API 6FA  upon request

Marking: MSS-SP-25

Temperature range: -196°C to +200°C

Pressure range: ANSI Class 150 / 300

Standard size range: 4" (DN 100) - 48" (DN 1200)

Face to face dimensions:

Flanged type according to ISO 5752, serie 14


Materials


Body:

Butt welded type: Stainless Steel ASTM A351 CF3M

Flanged type: Stainless Steel ASTM A351 CF8M

Disc: Stainless Steel ASTM A351 CF8M, stellited

Shaft: Stainless Steel AISI 316

Nuts and bolts: Stainless Steel AISI 316

Shaft seal: Grafoil (graphite)

Main seal: Spring activated PTFE (soft) or Helioflex (metal)


(Triple Offset Flanged Butterfly Valve, Lug, Flange, Welded End ) (Triple Excentric Flanged Butterfly Valve, Lug, Flange, Welded End) (Double Offset High Performance Butterfly Valve, Lug, Flange, Welded End)