Instrumentation
Measuring instruments
Indicators, sensors and transmitters to monitor the flow and temperature of your installations, alongside your valves.
Industrial valves
Valve devices at a glance
The main industrial valve devices and their role in an installation.
| Family | Device | Function |
|---|---|---|
| Isolation | Ball valve | Quick opening and closing (quarter turn), excellent tightness |
| Butterfly valve | Isolation and simple control on large diameters, compact | |
| Gate valve | Full-bore isolation, low pressure drop | |
| Knife gate valve | Isolation of slurries, sludge and powders | |
| Plug valve | Quarter-turn isolation for difficult media | |
| Diaphragm valve | Isolation of corrosive, abrasive or food-grade media | |
| Control | Globe valve | Precise flow control and isolation |
| Needle valve | Fine control of small flows | |
| Control valve (with actuator and positioner) | Automatic control of flow, pressure, temperature or level | |
| Pressure reducing valve (regulator) | Constant downstream pressure | |
| Three-way valve | Mixing or diverting two flows | |
| Protection | Safety valve | Protects installations against overpressure |
| Rupture disc | Last-resort overpressure protection, single use | |
| Check valve | Prevents backflow | |
| Steam and accessories | Steam trap | Discharges condensate without losing steam |
| Strainer | Protects equipment against impurities | |
| Actuation | Pneumatic, electric or hydraulic actuator | Automatic operation of valves |
| Positioner | Precise valve positioning according to the control signal (4–20 mA) | |
| Measurement | Flow indicator and transmitter | Measures and displays flow |
| Thermometer and temperature sensor | Measures temperature | |
| Pressure gauge and pressure transmitter | Measures pressure |