FEATURES:

• Blow-out Proof Stem
• Investment Casting Body
• Pressure Balance Hole in Ball Slot
• Various Thread Standard Available
• Locking Device Available
• 

STANDARD:

• Design: ASME B16.34
• Wall Thickness : ASME B16.34,GB12224
• Pipe Thread : ANSI B 1.20.1,BS 21/2779
• DIN 259/2999,ISO 228-1
• Inspection&Testing : API 598