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  • F22D5/00
    		•  Controlling water feed or water level; Automatic water feeding or water-level regulators (steam traps F16T; measuring or indicating instruments G01; for indicating water level G01F; level control in general G05D 9/00) HB CC 3L074
  • F22D5/00@A
    		•  Water level control units for boilers HB CC 3L074
  • F22D5/00@B
    		•  .in small boilers HB CC 3L074
  • F22D5/00@Z
    		•  Others HB CC 3L074
  • F22D5/02
    		•  .with an intermediate compartment from which the water is fed by gravity after mechanically moving the compartment, the movement being controlled according to water level HB CC 3L074
  • F22D5/04
    		•  .with pivoting buckets HB CC 3L074
  • F22D5/06
    		•  .with receptacles external to, but in free communication with, the boilers and adapted to move up and down in accordance with change in water level HB CC 3L074
  • F22D5/08
    		•  .with float-actuated valves HB CC 3L074
  • F22D5/10
    		•  ..and with pistons or membranes unitary with the feed inlet valves HB CC 3L074
  • F22D5/12
    		•  ..and with dipping tubes HB CC 3L074
  • F22D5/14
    		•  .responsive to thermal expansion and contraction, e.g. of solid elements HB CC 3L074
  • F22D5/16
    		•  ..of fluids HB CC 3L074
  • F22D5/18
    		•  .for varying the speed or delivery pressure of feed pumps HB CC 3L074
  • F22D5/20
    		•  ..without floats HB CC 3L074
  • F22D5/22
    		•  ..with floats HB CC 3L074
  • F22D5/24
    		•  .with electric switches HB CC 3L074
  • F22D5/26
    		•  .Automatic feed-control systems (automatic safety devices F22B 37/42; controlling in general G05) HB CC 3L074
  • F22D5/26@A
    		•  Controlling recirculating flow amount in evaporating parts HB CC 3L074
  • F22D5/26@B
    		•  Feed-control during starting-up periods HB CC 3L074
  • F22D5/26@C
    		•  Feed-control by detecting temperature HB CC 3L074
  • F22D5/26@Z
    		•  Others HB CC 3L074
  • F22D5/28
    		•  ..responsive to amount of steam withdrawn; responsive to steam pressure HB CC 3L074
  • F22D5/30
    		•  ..responsive to both water level and amount of steam withdrawn or steam pressure HB CC 3L074
  • F22D5/32
    		•  ..influencing the speed or delivery pressure of the feed pumps HB CC 3L074
  • F22D5/32@A
    		•  Control related to turbine driven pumps HB CC 3L074
  • F22D5/32@Z
    		•  Others HB CC 3L074
  • F22D5/34
    		•  ..Applications of valves (valves per seF16K) HB CC 3L074
  • F22D5/34@A
    		•  Controlling recirculating valves of water-feed pumps HB CC 3L074
  • F22D5/34@Z
    		•  Others HB CC 3L074
  • F22D5/36
    		•  ..for feeding a number of steam boilers designed for different ranges of temperature and pressure HB CC 3L074
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