Control Valve
Control valves and manifolds – precise control to EN 60534
ISE supplies globe, angle, V-port ball and butterfly control valves with pneumatic or electric actuators and HART positioners, plus 3-valve manifolds for DP transmitters, with Kv, characteristic, material and leakage-class selection for steam, feedwater and thermal oil.
Valve products
Control valve anatomy and flow characteristics
Choosing a control valve by application
| Application | Valve type | Characteristic |
|---|---|---|
| Steam pressure | Globe, FC | Equal percentage |
| Boiler drum level | Feedwater globe, FO | Equal percentage / linear |
| Thermal oil temperature | 3-way mixing / diverting | Linear |
| Slurry, pulp | V-port ball | Equal percentage |
| Combustion air, large ducts | Butterfly | Near equal percentage |
| DP transmitters | 3-valve manifold | Isolate, equalise, calibrate |
Control valve standards
| Standard | Scope |
|---|---|
| EN 60534 (IEC 60534) | Sizing, characteristics, leakage, noise |
| EN 1349 | Industrial process control valves |
| EN 12516 | Valve shell strength |
| EN 15714 | Valve actuators |
| 2014/68/EU (PED) | Pressure equipment |
| 2014/34/EU (ATEX) | Positioners, solenoids in explosive atmospheres |
FAQ
At what opening should a control valve operate?
Between 20 and 80 % travel. An oversized valve throttling near the seat hunts and wears the trim.
Why a smart HART positioner?
Accurate positioning, auto-calibration, friction and travel diagnostics and position feedback to the DCS.
ISE – Sales +84 909 617 185 – Technical +84 979 117 185 – [email protected]
