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VALVE GUIDE
How to Select the Right Valve for Industrial Applications
Valve selection in industrial facilities should not be based only on size and connection type; fluid properties, pressure-temperature values, material compatibility, installation conditions and control requirements should be evaluated together.
Direct answer
Valve selection in industrial facilities should not be based only on size and connection type; fluid properties, pressure-temperature values, material compatibility, installation conditions and control requirements should be evaluated together.
Technical review: MDES Engineering Technical TeamUpdated: 2026-08-05
Why do fluid properties matter?
A pipeline may carry water, steam, air, gas, oil or chemical fluids. Temperature, pressure, chemical behavior, particle content and corrosion risk directly affect body, sealing and internal component material selection.
How is the valve type selected?
Ball valves are suitable for quick shut-off, butterfly valves for compact installation in larger diameters, gate valves for water and infrastructure lines, and check valves for preventing reverse flow. For flow regulation, valve types with suitable control characteristics should be considered.
Pressure, temperature and connection standard
Nominal diameter, PN pressure class, operating temperature and connection standard should be evaluated together. Flanged connections are common in heavy-duty applications, while threaded, wafer or lug connections may be selected according to space, diameter and installation conditions.
Material and sealing selection
Body material, stem, disc/ball and sealing elements define service life. Cast iron, ductile iron, stainless steel, EPDM, NBR or PTFE should be selected according to fluid chemistry, pressure and temperature.
Key points
- Fluid type, temperature and pressure are the first evaluation criteria.
- Valve type should match shut-off, control or reverse-flow requirements.
- Material and sealing selection directly affect service life.
- If automation is required, actuator and control infrastructure should be planned from the beginning.
Frequently asked technical questions
Why do fluid properties matter?
A pipeline may carry water, steam, air, gas, oil or chemical fluids. Temperature, pressure, chemical behavior, particle content and corrosion risk directly affect body, sealing and internal component material selection.
How is the valve type selected?
Ball valves are suitable for quick shut-off, butterfly valves for compact installation in larger diameters, gate valves for water and infrastructure lines, and check valves for preventing reverse flow. For flow regulation, valve types with suitable control characteristics should be considered.
Pressure, temperature and connection standard
Nominal diameter, PN pressure class, operating temperature and connection standard should be evaluated together. Flanged connections are common in heavy-duty applications, while threaded, wafer or lug connections may be selected according to space, diameter and installation conditions.
Which information is required for an industrial valve quotation?
Provide the fluid, DN, PN, operating temperature and pressure, connection standard, body and sealing materials, actuation type, quantity and delivery location. Chemical compatibility and pressure-temperature limits must be confirmed before ordering.
Technical references
- EN 1092 flange connections
- EN 558 valve face-to-face dimensions
- EN 12266-1 pressure tests
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