Control Valve terminology, bodies, trim, flow characteristics, Cv and Kv sizing, noise, actuators and positioners
Pressure and temperature ratings for cast carbon steel valves.
Flow coefficients - Cv - for typical ball valves - reduced and full bore.
Typical flow coefficients - Cv - for butterfly valves.
Selecting and sizing butterfly valves for water applications.
How to add flow coefficients for control valves in series or parallel.
Control valves and cavitation, application ratio and multi stage control valves.
Flow capacities vs. stem opening.
Seat leakage classification through control valves.
Sizing control valves to match process requirements.
Online control valve - Cv - calculator for liquids flow.
Comparing flow coefficients Cv to flow factors Kv.
An online control valve - Cv - calculator for gases.
Specific gravities of air, ammonia, butadiene, carbon dioxide, carbon monoxide and some other common gases.
Calculate flow coefficients for the design of control valves - Imperial units.
Calculate flow factor Kv for liquids, steam and gases - metric units.
Critical pressure ratios for water and other liquids.
Common metals and their corrosion resistance to aggressive fluids like acids, bases and more.
Proportional, integrating and derivative process controllers.
Designing steam control valves and their Kv values.
Calculate control valves in steam systems.
Guidelines to safety steam valves installation.
Flow coefficients - Cv - and flow factors - Kv - for straight through diaphragm valves.
The valve authority expresses the ratio between pressure drop across the control valve compared to total pressure drop across the whole system.
Applications guide for selecting valves.
A control valve that goes to closed position if control signal or air fails.
A control valve that should stay put if control signal or air fails.
A control valve that goes to open position if control signal or air fails.
Valves and the term Normally Closed.
Valves and the term Normally Open.
In case of a specific service - the choose of a valve may be simplified by following an established practice.
Operating temperatures for typical categories of valves - ball valves, butterfly valves and more.
Types of valves and their typical operating sizes.
Sizing of water control valves - SI units
Sizing of water control valves - Imperial units.
Designing water process control valves and their Kv values.
Typical flow coefficients - Cv - and flow factors - Kv - for weir diaphragm valves.