Threaded three-piece, trunnion mounted ball valve
Design features
- Tightness is achieved by pressing the seats against the ball.
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- Seat design for gaseous media, DN ≥ 6”
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- Seat design for liquid media, DN ≥ 6”
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- Great shell integrity crucial for long –term, maintenance-free service
- Lower torque values and greater reliability due to trunnion mounted ball design
- Spring loaded seats ensuring zero leakage even with low line pressure.
- Self adjustable seat O-rings featuring reduced wear-off and extended durability
- Guaranteed tightness provided by the dual sealing technology : primary - metal to metal, secondary – polymer to
- metal.
- Pressure relief system which is engaged when the line working pressure exceeds the specified threshold (liquid
- media).
- Block and bleed system meant for venting pressure from body cavity (DBB in closed or open/closed position).
- Sealant injection port enabling to restore valve tightness in the seats area
- Anti blow-out stem with antistatic design.
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Number
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Part
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Standard
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Stainless Steel
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Sour Service
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Low Temperature Service
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1
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Body
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ASTM A105
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ASTM A351-CF8M
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ASTM A105
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ASTM A352-LCB
A350 LF2
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2
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Ball
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ASTM A105/ENP
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ASTM A182-F316
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ASTM A105/ENP
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ASTM A182-F216
A350 LF2 + ENP
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3
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Seat Ring
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PTFE*
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PTFE*
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PTFE*
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PTFE*
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4
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Stem
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ASTM A182-F6a
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ASTM A182-F316
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ASTM A182-F6a
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ASTM A182-F316
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5
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Packing Set
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Rubber
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Rubber
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Rubber
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Rubber
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6
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Bolt
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ASTM A193-B7
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ASTM A193-B8
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ASTM A193-B7M
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ASTM A320-L7M
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7
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Spring
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S.S.
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S.S.
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S.S.
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S.S.
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