Valve Selection Guide
Applications guide for selecting valves.
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.
Conveyed Fluid | Nature of Fluid | Valve Function | Type 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 |
Related Topics
-
Control Valves
Control Valve terminology, bodies, trim, flow characteristics, Cv and Kv sizing, noise, actuators and positioners -
Control Valves and Equipment
Sizing and dimensions of control valves & equipment in steam and condensate systems. -
Piping Systems
Dimensions of pipes and tubes, materials and capacities, pressure drop calculations and charts, insulation and heat loss diagrams. -
Valve Standards
International standards for valves in piping systems.
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.