Split body, full port, trunnion mounted, blow-out proof stem, double seal design, double block and bleed,
anti-static design, “fire-safe” designed to API 607, 4th Edition, and locking device. Designed in accordance
with API-6D, ASME B16.34, and BS5351 specifications.
DESIGN FEATURES OF TRUNNION BALL VALVE
• Grease Injection Device
According to customer’s requirements, the trunnion ball valves are
provided with devices for grease injection, which are both the stem
and seat for the trunnion ball valves of smaller than 6″, and in the
body cavity for the valves of larger than 6″.
• Double-block and bleed functions
In general, J-Flow’s trunnion ball valve features the front ball sealing
design structure. Each seat of the ball valve can separately cut off the
medium at both inlet and outlet of the valve to realize double-block
functions. When the ball valve is closed, body cavity and two of the
body ends can be blocked with each other even if both the inlet and
outlet are under pressure, when the medium left in the body cavity
might be bled through the relief valve.