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

Britton F. Piper

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Closure apparatus for blow out prevention

Wells – Above ground apparatus – With means for inserting fluid into well
Patent

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Flow control valve

Fluid handling – Line condition change responsive valves – Direct response valves
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Pressurized check valve

Fluid handling – Line condition change responsive valves – Direct response valves
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Profile ID: LFUS-PAI-P-1076212

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