4. Valves and valve actuation
  5. Mechanical movement actuator
  6. Particularly packed or sealed

Conval Inc.

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Ball valve with cartridge

Valves and valve actuation – With means to increase head and seat contact pressure – With positive reduction
Reexamination Certificate

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Ball valve with improved valve seat and bonnet assembly

Valves and valve actuation – Mechanical movement actuator – Particularly packed or sealed
Patent

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Half-turn valve

Valves and valve actuation – With means to increase head and seat contact pressure – With positive reduction
Patent

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Hemispherical ball valve

Fluid handling – With repair – tapping – assembly – or disassembly means – Assembling – disassembling – or removing cartridge type valve
Patent

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