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Selecting your valves
Service conditions
- Fluid used:
- Phase: gas, liquid or powdered
- Nature: water, air, petrol, solvent…
- Classification acc. to Regulation n°1272
(hazardous, non-hazardous)
- Operating pressure: allowable maximum and minimum
- Operating temperature: allowable maximum and minimum
Type of valve and its functionality
- Type : Ball valve / Butterfly valve / Globe valve / Needle valve / Gate valve / Knife gate valve / Check valve / Control valve / Satefy valve / Pressure regulating valve / Strainers / etc.
- Function : sectioning, regulation, balancing, safety, passing, releasing...
Features
- Material of the body, the closing member, the seats and gaskets
- Nominal diameter and bore
- Type of connection:
- Threaded: BSP/NPT/SMS
- Welding: SW/BW
- Flanged: various standards
- Quick couplings (camlock, symmetrical, clamp,...)
- Face-to-face dimension acc. to EN 558 or others
- Type of operation:
- Manual valves: handle, handwheel, lever, gear box
- Actuated valves: pneumatic, hydraulic, electric
Other factors
- Environmental conditions & installation location of the valves
- Standards: ISO, EN, ANSI, other specific national standards, fire safe, fugitive emissions...
- Required certification: CE-PED, ATEX, inspection documents acc. to EN, hydraulic test
- Service lifetime, cycles and expected wear
- Maintenance procedures and spare parts availability