Cast Steel Trunnion Mounted Ball Valve

Pindee Cast steel trunnion mounted ball valves are designed , manufactured and tested in accordance with API 6D, ASEM B16.34, and meet API 607 sixth edition, API 6FA specification requirements . Pindee cast steel trunnion mounted ball valves has two optional structure design " two piece side entry" and "three piece side entry”

Size: 2"~48"
Rating: 150LB~600LB
Body Materials: Carbon Steel, Stainless Steel, etc.
Trim: A105+ENP, 13Cr, F304, F316
End Connection: RF, RTJ, BW
Operation: Lever, Gear, Motor, Pneumatic

BLOW-OUT PROOF STEM DESIGN

The stem is designed separated from ball, and designed as T slot shape at the bottom side, and gland flange will prevent the stem blow out in case of any abnormal cavity pressure increase

ANTI-STATIC DEVICE

The electrical conductance continuity connect the ball, stem and body, it can avoid the any fire or explosion caused by the static that might be produced and accumulated by friction between the ball and seat ring during valve open or close.

FIRE SAFE DESIGN

External leakage prevention In normal condition, leakage through the valve stem area is prevented by two O-ring seals and a gland packing. Leakage through the valve body and bonnet connection is also blocked by an O-ring seal and a body gasket. In the event of a fire, O-rings will be melted or decomposed under higher temperature in the fire, then the fire safe body gasket, stem packing will prevent external leakage.

Internal leakage prevention In the event of a fire, all none metal materials, like O-rings, soft seats and back rings, will be melted or decomposed under high temperature in the fire, the edge of metal seat energized by the seat spring will contact with the ball to block the pipeline medium and minimize internal leakage. Also the fire safe graphite packing is compressed into the seat ring groove to prevent process media leakage through the gap between the valve body and seat.

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