Self-actuated final control element
Tag number shall be omitted if valve is otherwise identified.
Restriction orifice hole drilled in valve plug.
Note required for multi-stage or capillary tube types.
Single stage orifice plate as shown.
Generic flow restriction.
Type shall be noted if more than one type used.
Flow sight glass.
Instrument tag bubble required with (b).
Variable area flowmeter with integral manual adjusting valve.
Constant flow regulator.
Automatic flow regulator.
Self-actuated final control element symbol
Self-actuated final control element
Tag number shall be omitted if valve is otherwise identified.
Restriction orifice hole drilled in valve plug.
Note required for multi-stage or capillary tube types.
Single stage orifice plate as shown.
Generic flow restriction.
Type shall be noted if more than one type used.
Flow sight glass.
Instrument tag bubble required with (b).
Variable area flowmeter with integral manual adjusting valve.
Constant flow regulator.
Automatic flow regulator.
Self-actuated final control element symbol