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Valves Types - Operating Size Ranges

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Valves and typical operating sizes:

Valves Types - Operating Size Ranges
Type of ValveMinimum SizeMaximum Size
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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Temperature and pressure ratings for valves according API 6D.

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Valve Authority

The valve authority expresses the ratio between pressure drop across the control valve compared to total pressure drop across the whole system.

Valve Type Classifications

Categories of valves.

Valves - Typical Operating Temperatures

Operating temperatures for typical categories of valves - ball valves, butterfly valves and more.

Water Control Valves - Flow Factor Kv Diagram

Sizing of water control valves - SI units

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