4. Fluid handling
  5. With indicator, register, recorder, alarm or inspection means
  6. Fluid pressure responsive indicator, recorder or alarm

Daryl L. Ard

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Stem seal pressure telltale

Fluid handling – With indicator – register – recorder – alarm or inspection means – Fluid pressure responsive indicator – recorder or alarm
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Valve, actuator and control system therefor

Valves and valve actuation – Fluid actuated or retarded – With mechanical movement between actuator and valve
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Valve, actuator and control system therefor

Valves and valve actuation – Fluid actuated or retarded – Pilot or servo type motor
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