Valves - Specific Services
In case of a specific service - the choose of a valve may be simplified by following an established practice.
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| Services | Main | Secondary |
|---|---|---|
| Gases | Butterfly valves Check valves Diaphragm valves Lubricated plug valves Screw down stop valves | Pressure control valves Pressure relief valves Pressure reducing valves Safety valves Relief valves |
| Liquids - clear up to sludges and sewage | Butterfly valves Screw down stop valves Gate valves Lubricated plug valves Diaphragm valves Pinch valves | |
| Slurries and liquids with solids | Butterfly valves Pinch valves Gate valves Screw down stop valves Lubricated plug valves | |
| Steam | Butterfly valves Gate valves Screw down stop valves Turbine valves | Check valves Pressure control valves Pre superheated valves Safety and relief valves |
- Slurry - a thin mixture of a liquid like water and finely divided substances, such as cement or clay particles
- Sludge - a semi-solid slurry. Wastewater solids are also referred to as sludge.
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Related Topics
-
Control Valves
Control Valve terminology, bodies, trim, flow characteristics, Cv and Kv sizing, noise, actuators and positioners -
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
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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. -
Control Valves - Sizing and Selection
Sizing control valves to match process requirements. -
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. -
Straight Through Diaphragm Valves - Flow Coefficients
Flow coefficients - Cv - and flow factors - Kv - for straight through diaphragm valves. -
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.
