List of products by brand YTC

YTC / Rotork – Technical profile of a valve positioner and pneumatic valve instrumentation manufacturer

YTC is a Rotork brand for valve positioners and valve automation instrumentation. The range includes pneumatic, electro-pneumatic and smart positioners, as well as limit switch boxes and accessories for control valve packages.

The range represented through Philippopoulos S.A. mainly includes smart linear positioners:

• YT-2300,
• YT-2400,
• YT-2500 / YT-2550,
• YT-2501,
• YT-2600,
• YT-2700,
• YT-3300 / YT-3350,
• YT-3301,
• YT-3303L,
• YT-3400 / YT-3450.

A valve positioner is installed between the controller and the pneumatic actuator. It receives a control signal, typically 4–20 mA, compares the required valve position with actual mechanical feedback and adjusts pneumatic output pressure to the actuator.

Smart positioners provide auto calibration, local display, push-button configuration, HART communication, feedback signal, limit switches and diagnostic functions, depending on the series.

Linear positioners are used on globe control valves, diaphragm actuators and linear pneumatic actuators. Rotary versions are used on ball valves, butterfly valves, plug valves and dampers.

Remote feedback versions are used when the valve is exposed to high temperature, vibration or difficult access. The sensing element remains on the actuator, while the electronics can be installed in a more suitable location.

Instrument air quality is critical. Air must be clean, dry and filtered. Moisture, oil or particles may cause unstable positioning, slow response, hunting or internal spool sticking.

Selection requires:

• linear or rotary actuator,
• single acting or double acting operation,
• stroke or rotation angle,
• input signal,
• pneumatic supply pressure,
• fail action,
• feedback requirement,
• HART / DTM integration,
• hazardous area certification,
• SIL or partial stroke requirement where applicable,
• mounting bracket and linkage,
• air filter regulator.

For process and automation engineers, YTC should be specified as part of the complete control valve instrumentation package, not as an isolated accessory.