Trunnion mounted ball valve is widely used in oil, nature gas pipeline and the industries of liquefied gas, coal gas, 
etc. as an open/close control element. The design of seat seal uses unique two-level soft seal and metal to metal seal to 
form triple sealing to ensure seal reliability with small open/close torque and easy operation. So it is safe and free of 
maintenance to use this series of ball valve. This type of valves has advantage of less weighted and cost effective. It is 
ideal for frequent on-off flow control in big size and high pressure pipeline.

Applicable Standard
Design Standard:     API 6D, ASME B16.34, BS 5351, API 608, MSS SP-72
Face to Face:          ASME B16.10, API 6D, EN 558
End Flange:             ASME B16.34, DIN 2501
Buttwelding Ends:    ASME B16.25
Inspection and Test: API 598, API 6D

Design Features
Full port or reduced port
Trunnion mounted ball
Blowout-proof stem
Double block & bleed
Emergency sealant injection
Cavity pressure self relief
Fire safe design to API 607 / API 6FA
Anti-static to BS 5351