
SIGMA SLEEVE VALVE
applications
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Pressure actuated sliding sleeve
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Runs on the bottom of a cemented completion string
features
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Spring assisted piston & lock open spring
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No pup joints required
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Interchangeable burst disks (500 psi increments)
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Flow port area design prevents screen out
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Full drift I.D.
benefits
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Compact design
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Torque through capability
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Rated to 400 degrees farenheit with standard trim
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Total pressure rating up to 20,000 psi