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Valve Selection Guide

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The suitability of a valve for a particular application is decided by the materials used in relation to the conveyed fluid as well as its mechanical design. The table below can be used as a valve selection guide.

Valve Selection Guide
Conveyed FluidNature of FluidValve FunctionType of Disc
Liquid Neutral
(Water, Oil, etc)
On/Off Gate
Rotary ball
Plug
Diaphragm
Butterfly
Plug gate
Control valve, modulating Globe
Butterfly
Plug gate
Diaphragm
Needle
Corrosive
(Acid, alkaline etc.)
On/Off Gate
Plug gate
Rotary ball
Plug
Diaphragm
Butterfly
Control valve, modulating Globe
Diaphragm
Butterfly
Plug gate
Hygienic
(Food, beverages, drugs etc)
On/Off Butterfly
Diaphragm
Control valve, modulating Butterfly
Diaphragm
Squeeze
Pinch
Slurry On/Off Rotary ball
Butterfly
Diaphragm
Plug
Pinch
Squeeze
Control valve, modulating Butterfly
Diaphragm
Squeeze
Pinch
Gate
Fibrous Suspensions On/Off,
Control valve, modulating
Gate
Diaphragm
Squeeze
Pinch
Gas Neutral
(Air, Steam etc)
On/Off Gate
Globe
Rotary ball
Plug
Diaphragm
Control valve, modulating Globe
Needle
Butterfly
Diaphragm
Gate
Corrosive
(Acid vapors, chlorine etc.)
On/Off Butterfly
Rotary ball
Diaphragm
Plug
Control valve, modulating Butterfly
Globe
Needle
Diaphragm
Vacuum On/Off Gate
Globe
Rotary ball
Butterfly
Solids Abrasive Powder
(Silica, etc)
On/Off,
Control valve, modulating
Pinch
Squeeze
Spiral sock
Lubricating powder (graphite, talcum, etc On/Off,
Control valve, modulating
Pinch
Gate
Spiral sock
Squeeze
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Related Topics

Control Valve Sizing

Control Valve terminology, bodies, trim, flow characteristics, Cv and Kv sizing, noise, actuators, positioners and more.

Design of Control and Safety Valves

Sizing and dimensions of control valves & equipment in steam and condensate systems.

International Valve Standards

International valve standards for piping systems.

Piping Systems

Calculate dimensions of pipes and tubes. Pressure drop calculations and head loss charts. Use of different piping materials. Insulation of pipes and tubes and heat loss diagrams.

Related Documents

ASME - Valve Standards

An overview of the American Society of Mechanical Engineers - ASME - valve standards.

ASTM - Valve Standards

An overview of ASTM International - American Society for Testing and Materials - valve standards.

Control Valves - Flow Characteristics

Flow capacities vs. stem opening.

Control Valves - Leakage Classification

Seat leakage classification through control valves.

Diaphragm Valves - Diaphragm Materials

Common diaphragm materials and their main properties when used in diaphragm valves.

ISO Valve Standards

An overview of ISO - International Organization for Standardization - valve standards.

Liquid, Steam and Gas - Flow Coefficients Cv

Calculate flow coefficients for the design of control valves - Imperial units.

Safety Valve Standards

The most common used safety valve standards in Germany, UK, USA, France, Japan, Australia and Europe.

Slurry Transports - Minimum Flow Velocities

Flow velocities in slurry transport systems to avoid settling of solids.

Steam Control Valves - Calculate Flow Factor Kv

Designing steam control valves and their Kv values.

Valve Abbreviations

US valve abbreviations commonly used in drawings and documentation.

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.

Weir Diaphragm Valves - Flow Coefficients and Flow Factors

Typical flow coefficients - Cv - and flow factors - Kv - for weir diaphragm valves.

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