Valves - Typical Operating Ranges

Different types of valves and their operating ranges: 

The table below can be used as an indication of the different valve types and typical operating ranges.

Type of Valve	Minimum Size		Maximum Size
	mm	inches	mm	inches
Ball	6		1220	48
Butterfly	50	2	1830	72
Butterfly Neck	25	1	1830	72
Gate	3	1/8	1220	48
Globe	3	1/8	760	30
Plug Lubricated	6		760	30
Plug non lubricated	6		406	16
Swing Check	6		610	24
Swing Check Y-type	6		150	6
Lift Check	6		250	10
Tilting disc	50	2	760	30
Diaphragm	3	1/8	610	24
Y Oblique	3	1/8	760	30
Slide	50	2	1900	75
Pinch	25	1	305	12
Needle	3	1/8	25	1

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Classification of Valves

Categories of Valves	Application Description
Flow regulating valves	For controlling rate of flow.
Temperature regulating valves	For controlling fluid temperature in a system.
Automatic process control valves	For controlling rate of flow relative to value.
Anti vacuum valves	An automatic type of air valve preventing the formation of vacuum in tanks or pipelines.
Blow down valves	A valve which is used for cleaning sludge from a boiler.
Bulkhead valves	A gate valve.
Free ball valves	A valve in which a ball is free to rotate in any direction.
Fusible link or fire valves	A fire prevention valve which has a weighted lever hold open by a wire and fusible link which melts at an increase of room temperature.
Hydraulic valves	A control valve for water, oil, or hydraulic systems.
Jet dispersal valve	A valve incorporating an element by virtue of which the energy within the emitting jet is dissipated.
Penstock	A single faced type of valve consisting of an open frame and a door and used in terminal positions only. Normal located in tanks or channels for controlling flow in to a pipe.
Plate valves	A gate valve incorporating a sluicing effect.
Radiator valves	A valve controlling the flow of water through a radiator.
Rotary slide valve	A valve in which a rotation of internal parts regulates flow by opening and closing a series of segmental ports.
Rotary valve	A spherical plug valve in which the plug, which rotates through 90o.
Solenoid valve	A valve operated by by an electrical solenoid.
Spectacle eye valve	A parallel slide valve.
Thermostatic mixing valve	A valve which combines temperature.
Throttle valve	A non tight closing butterfly valve.

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