Ball Valves

STANDARD DESIGN FEATURES

• Size range: 1.1/2” to 60”
• Rating class:
  • API 6D: ASME 150-300-600-900-1500-2500 ANSI
  • API 6A: API 2000-3000-5000-10000-15000 psi
• Trunnion Mounted ball with Spring loaded floating seat
• Body & Closures from Forging
• Self-relieving seats or Double Piston Effect seats (DIB-1 or DIB-2)
• Soft seated or Metal Seated with Tungsten Carbide Coating
• Blow out proof stem design
• Electrical continuity for CP system
• Direct ROV connection (if required)
• End connections:
  • flanged (ASME B16.5 – B16.47)
  • BW (ASME B16.25)
  • Hub
• Construction and testing according to BS 6364/ASME B16.34/API 6DSS
• Materials according to NACE MR 01.75

SPECIAL DESIGN FEATURES

For specific and more demanding application to guarantee the reliability of the subsea package for the whole duration of the life with zero maintenance (up to 30 years) RMT Valvomeccanica include special design features:

• Primary Metal sealing Body-to-closure / Body-to-bonnet by Metal gasket ring (BX type)
• Multiple barrier on Stem sealing system and primary metal stem sealing upon request for severe service.
• Metal-to-metal sealing between Ball and Seat (TCC coated) with 0 leakage performance (RATE A) for fluid service.
• Non-elastomeric seals (PTFE-PEEK) compatible with most severe media, suitable for blow-down service beyond -29°C and with no risk of gradual degradation.
• Internal protection on all sealing areas and critical surfaces by N06625 weld overlay; fully cladded upon request for severe service.
• Vent and drain ports arrangement with primary metal barrier and seal welding.