4. Fluid handling
  5. Line condition change responsive valves
  6. Direct response valves

National Coupling Inc.

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Hydraulic coupling with pressure equalizing valve

Fluid handling – Systems – Flow path with serial valves and/or closures
Patent

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Sleeve for quick disconnect coupling

Pipe joints or couplings – Socket – Lugged pipe – rotary engagement
Patent

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Undersea hydraulic coupling member

Fluid handling – Line condition change responsive valves – Direct response valves
Patent

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