Three way ball valve for pig launch
Design features
- The ball valve does’t obstruct the fl ow in closed position (while loading/unloading the pig). The by-pass bore is 25% of the main line. Medium fl ow through by-pass doesn’t signifi cantly aff ect main line pressure.
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- Top entry body design for easy maintenance.
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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 |
Cover |
ASTM A105 |
ASTM A351-CF8M |
ASTM A105 |
ASTM A352-LCB
A350 LF2
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4
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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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5
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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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6
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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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