Rotork YTC Limited

81 Hwanggeum-ro, 89 beon-gil, Gimpo-si,
Gyeonggi-do, Korea 10048
Website: www.ytc.co.kr

The leader in Control Valve Positioner and Accessories. With state of the art headquarter and factory located in Gimpo-city in Korea. Can be the best supplier for control valve accessories.

ROTORK’S technique is based on their experience in control valve over twenty years. With its experience, ROTORK built first Korean made positioner, volume booster and position transmitter.

  • SMART POSITIONER

    • YT-3700/3750: Smart Positioner (Intrinsically Safe Type)
    • YT-3700/3750: Smart Positioner (Intrinsically Safe Type)

    YT-3700/3750: Smart Positioner (Intrinsically Safe Type)


    Smart Positioner YT-3700 / 3750 series Smart Valve Positioner accurately controls valve stroke in response to an input signal of 4~20mA from the controller. Built-in micro-processor optimizes the positioner’s performance and provides unique functions such as Auto-Calibration, PID Control, and HART Protocol Communications.

    • LCD display
    • 4 buttons for local control
    • 0.5 second positioner boot-time
    • Positioner operates normally even there are sudden changes in supply pressure and / or high vibration environment
    • reduces operating costs in large-scale plants
    • compatible with most of controllers
    • Orifices can be installed even in the field
    • YT-3300/3350: Smart Positioner (Intrinsically Safe Type)
    • YT-3300/3350: Smart Positioner (Intrinsically Safe Type)

    YT-3300/3350: Smart Positioner (Intrinsically Safe Type)

    YT-3300/3350 Smart Valve Positioner accurately controls valve stroke, according to input signal of 4~20mA being delivered from controller.

    • Auto calibration
    • Auto/Manual switch
    • HART comunication
    • LCD display
    • PID control
    • 4 buttons for local control
    • Feedback signal
    • Limit switch
    YT-3303: Smart Positioner

    YT-3303: Smart Positioner

    YT-3303 Smart Valve Positioner accurately controls valve stroke, according to input signal of 4~20mA being delivered from controller.

    • Auto calibration
    • Auto/Manual switch
    • HART comunication
    • LCD display
    • PID control
    • 4 buttons for local control
    • Feedback signal
    YT-3301: Remote Type

    YT-3301: Remote Type

    YT-3301 Smart Valve Positioner accurately controls valve stroke, according to input signal of 4~20mA being delivered from controller.

    • Separated feedback module
    • Auto/Manual switch
    • HART comunication
    • Auto calibration
    • PID control
    • 4 buttons for local control
    • LCD display
    • Feedback signal
    • YT-3400/3450: Flameproof Type
    • YT-3400/3450: Flameproof Type

    YT-3400/3450: Flameproof Type

    YT-3400/3450 Smart Valve Positioner accurately controls valve stroke, according to input signal of 4~20mA being delivered from controller.

    • Auto calibration
    • PID control
    • HART comunication
    • Auto/Manual switch
    • Feedback signal
    • 4 buttons for local control
    • LCD display
    • Limit switch
    • YT-2500/2550: Smart Positioner (Fail Freeze or Fail Safe Type)
    • YT-2500/2550: Smart Positioner (Fail Freeze or Fail Safe Type)

    YT-2500/2550: Smart Positioner (Fail Freeze or Fail Safe Type)

    YT-2500/2550 Smart Valve Positioner accurately controls valve stroke, according to input signal of 4~20mA being delivered from controller.

    • Fail freeze function
    • Near zero air consumption level
    • HART communication
    • Auto calibration
    • PD control
    • 4 buttons for local control
    • LCD display
    • Feedback signal
    • Limit switch
    • YT-2501: Remote type
    • YT-2501: Remote type

    YT-2501: Remote type

    YT-2501 Smart Positioner supplies remote functions and higher liabilities in high temperature and vibration environment.

    • Separated feedback module
    • Near zero air consumption level
    • HART comunication
    • Auto calibration
    • PD control
    • 4 buttons for local control
    • LCD display
    • Feedback signal
    • Fail freeze & safe function
    YT-2600: Fail Freeze / Fail Safe Type (Flameproof Type)

    YT-2600: Fail Freeze / Fail Safe Type (Flameproof Type)

    YT-2600 Smart Valve Positioner accurately controls valve stroke, according to input signal of 4~20mA being delivered from controller.

    • Fail freeze function
    • Near zero air consumption level
    • HART comunication
    • Auto calibration
    • PD control
    • 4 buttons for local control
    • LCD display
    • Feedback signal
    • Limit switch
    TMP-3000: for Angle seat valve

    TMP-3000: for Angle seat valve

    TMP-3000 valve stroke, according to input signal of 4~20mA being delivered from controller.

    • Interchangeable fail action
    • Near zero consumption level
    • LCD display with backlight
    • Feedback signal
    • 4 buttons for local control
    • Simple mounting
    • Auto calibration
  • ELECTRO PNEUMATIC POSITIONER

    YT-1000L: Linear Type

    YT-1000L: Linear Type

    The Electro-Pneumatic Positioner YT-1000L is used for operation of pneumatic rotary valve actuators by means of electrical controller or control system with an analog output signal of DC 4 to 20mA or split ranges.

    • Simple zero and span adjustment
    • No resonance between 5-200Hz
    • Auto/Manual switch
    • RA v.s. DA action and 1/2 split range setting by simple adjustment.
    • Internal feedback signal is available as an option (weather proof only)
    YT-1000R: Rotary Type

    YT-1000R: Rotary Type

    The Electro-Pneumatic Positioner YT-1000R is used for operation of pneumatic rotary valve actuators by means of electrical controller or control system with an analog output signal of DC 4 to 20mA or split ranges.

    • Simple zero and span adjustment>br> • No resonance between 5-200Hz
    • Auto/Manual switch
    • RA v.s. DA action and 1/2 split range setting by simple adjustment.
    • Internal feedback signal is available as an option (weather proof only)
    YT-1050 : Stainless Steel Type

    YT-1050 : Stainless Steel Type

    YT-1050, the Electro Pneumatic positioner is used for operation of pneumatic valve actuators by means of electrical controller or control system with an analog output signal of DC 4 to 20mA or split ranges.

    • Simple zero and span adjustment
    • No resonance between 5-200Hz
    • Auto/Manual switch
    • RA v.s. DA action and 1/2 split range setting by simple adjustment.
  • PNEUMATIC PNEUMATIC POSITIONER

    YT-1200L: LINEAR TYPE

    YT-1200L: LINEAR TYPE

    The Pneumatic Pneumatic Positioner YT-1200L is used for pneumatic linear valve actuators by means of pneumatic controller or control systems with an output signal of 3 to 5 psi or split ranges.

    • Simple zero and span adjustment
    • No resonance between 5~200Hz
    • Auto/Manual switch
    • RA v.s. DA action and 1/2 split range setting by simple adjustment
    YT 1200R: ROTARY TYPE

    YT 1200R: ROTARY TYPE

    The Pneumatic Pneumatic Positioner YT-1200R is used for pneumatic rotary valve actuators by means of pneumatic controller or control systems with an output signal of 3 to 15 psi or split ranges.

    • Simple zero and span adjustment
    • No resonance between 5~200Hz
    • Auto/Manual switch
    • RA v.s. DA action and 1/2 split range setting by simple adjustment
  • IP CONVERTER

    YT-930 (Intrinsically Safe Type)

    YT-930 (Intrinsically Safe Type)

    YT930 IP Converter accurately provides equipments with relevant air pressure, according to input signal of 4~20mA being delivered from the controller.

    • High accuracy and sensitivity
    • Simple zero and span adjustment
    • Feedback Signal (Option)
    • Analog PID Control
    • Tubeless connection of YT-200, Air Regulator
    • Explosion Proof
    • No effect from mounting orientation
    YT-940 (Explosion Proof Type)

    YT-940 (Explosion Proof Type)

    YT940 IP Converter accurately provides equipments with relevant air pressure, according to input signal of 4~20mA being delivered from the controller.

    • High accuracy and sensitivity
    • Simple zero and span adjustment
    • Feedback Signal (Option)
    • Analog PID Control
    • Tubeless connection of YT-200, Air Regulator
    • Explosion Proof
    • No effect from mounting orientation
  • AIR FILTER REGULATOR

    YT-200 1/4″

    YT-200 1/4″

    Air filter regulator suitably reduce plant’s main air supply pressure and supplies to valve positioner(s) or control device(s).

    • Maintain stable outlet pressure
    • Light weight and compact size
    • 5 micron filter
    • Relief function – discharge pressure if outer pressure is higher than set pressure
    YT-220 1/2

    YT-220 1/2"

    Air filter regulator suitably reduce plant’s main air supply pressure and supplies to valve positioner(s) or control device(s).

    • Maintain stable outlet pressure
    • Light weight and compact size
    • 5 micron filter
    • Relief function – discharge pressure if outer pressure is higher than set pressure
    YT-205  Stainless steel type 1/4″

    YT-205 Stainless steel type 1/4″

    Air filter regulator suitably reduce plant’s main air supply pressure and supplies to valve positioner(s) or control device(s).

    • Maintain stable outlet pressure
    • Light weight and compact size
    • 5 micron filter
    • Relief function – discharge pressure if outer pressure is higher than set pressure
    YT-225  Stainless steel type 1/2″

    YT-225 Stainless steel type 1/2″

    Air filter regulator suitably reduce plant’s main air supply pressure and supplies to valve positioner(s) or control device(s).

    • Maintain stable outlet pressure
    • Light weight and compact size
    • 5 micron filter
    • Relief function – discharge pressure if outer pressure is higher than set pressure
  • VOLUME BOOSTER

    YT-300  Small Size 1/4″

    YT-300 Small Size 1/4″

    Volume booster relay, YT-300 is used in pneumatic control valve which receives positioner’s output signal and supply air pressure actuator to reduce response and adjusting time.

    • Supplies constant air pressure at the rate of 1:1.
    • By-passing control enhances safety of control valve.
    • Response to slight changes in input signal, which increases accuracy of output of air pressure to actuator.
    • Built-in 100 mesh screen filters dusts in the air.
    YT-320  Medium size 1/2″

    YT-320 Medium size 1/2″

    Volume booster relay, YT-320 is used in pneumatic control valve which receives positioner’s output signal and supply air pressure actuator to reduce response and adjusting time.

    • Supplies constant air pressure at the rate of 1:1.
    • By-passing control enhances safety of control valve.
    • Response to slight changes in input signal, which increases accuracy of output of air pressure to actuator.
    • Built-in 100 mesh screen filters dusts in the air.
    YT-310  Large Size (3/4″)

    YT-310 Large Size (3/4″)

    Volume booster relay, YT-310 is used in pneumatic control valve which receives positioner’s output signal and supply air pressure actuator to reduce response and adjusting time.

    • Supplies constant air pressure at the rate of 1:1.
    • By-passing control enhances safety of control valve.
    • Response to slight changes in input signal, which increases accuracy of output of air pressure to actuator.
    • Built-in 100 mesh screen filters dusts in the air.
    YT-305  Small size (1/4″ Stainless Steel 316)

    YT-305 Small size (1/4″ Stainless Steel 316)

    Volume booster relay, YT-305 is used in pneumatic control valve which receives positioner’s output signal and supply air pressure actuator to reduce response and adjusting time.

    • Supplies constant air pressure at the rate of 1:1.
    • By-passing control enhances safety of control valve.
    • Response to slight changes in input signal, which increases accuracy of output of air pressure to actuator.
    • Built-in 100 mesh screen filters dusts in the air.
    YT-325  Medium size 1/2″ (Stainless Steel Type)

    YT-325 Medium size 1/2″ (Stainless Steel Type)

    Volume booster relay, YT-325 is used in pneumatic control valve which receives positioner’s output signal and supply air pressure actuator to reduce response and adjusting time.

    • Supplies constant air pressure at the rate of 1:1.
    • By-passing control enhances safety of control valve.
    • Response to slight changes in input signal, which increases accuracy of output of air pressure to actuator.
    • Built-in 100 mesh screen filters dusts in the air.
    YT-315  Medium size 1/2″ (Stainless Steel Type)

    YT-315 Medium size 1/2″ (Stainless Steel Type)

    Volume booster relay, YT-315 is used in pneumatic control valve which receives positioner’s output signal and supply air pressure actuator to reduce response and adjusting time.

    • Supplies constant air pressure at the rate of 1:1.
    • By-passing control enhances safety of control valve.
    • Response to slight changes in input signal, which increases accuracy of output of air pressure to actuator.
    • Built-in 100 mesh screen filters dusts in the air.
  • LOCK-UP VALVE

    YT-400 1/4″

    YT-400 1/4″

    Lock Up Valve, YT-400 sense the main supply pressure and shuts down the air flow when the pressure is lower than setting.

    • Compact size – NO bracket is required
    • Detects small variation of the pressure – below 0.01MPa.
    YT-405 (SS 316) 1/4″

    YT-405 (SS 316) 1/4″

    Lock Up Valve, YT-405 sense the main supply pressure and shuts down the air flow when the pressure is lower than setting.

    • Compact size – NO bracket is required
    • Detects small variation of the pressure – below 0.01MPa.
    YT-430 3/8″

    YT-430 3/8″

    Lock Up Valve, YT-430 sense the main supply pressure and shuts down the air flow when the pressure is lower than setting.

    • Compact size – NO bracket is required
    • Detects small variation of the pressure – below 0.01MPa.
    YT-435 (SS 316) 3/8″

    YT-435 (SS 316) 3/8″

    Lock Up Valve, YT-435 sense the main supply pressure and shuts down the air flow when the pressure is lower than setting.

    • Compact size – NO bracket is required
    • Detects small variation of the pressure – below 0.01MPa.
  • SNAP ACTING RELAY

    YT-520 1/4″

    YT-520 1/4″

    YT-520 change the direction of air flow rate from one output port to the another when it senses low air pressure.

    • Switches pressure flows when abnormal pressure detected
    • Able to look actuator in its position
    • Stem can be extended and connected
    YT-525 (SS 316) 1/4″

    YT-525 (SS 316) 1/4″

    YT-525 change the direction of air flow rate from one output port to the another when it senses low air pressure.

    • Switches pressure flows when abnormal pressure detected
    • Able to look actuator in its position
    • Stem can be extended and connected
    YT-530 3/8″

    YT-530 3/8″

    YT-530 change the direction of air flow rate from one output port to the another when it senses low air pressure.

    • Switches pressure flows when abnormal pressure detected
    • Able to look actuator in its position
    • Stem can be extended and connected
    YT-535 (SS 316) 3/8″

    YT-535 (SS 316) 3/8″

    YT-535 change the direction of air flow rate from one output port to the another when it senses low air pressure.

    • Switches pressure flows when abnormal pressure detected
    • Able to look actuator in its position
    • Stem can be extended and connected
  • SOLENOID VALVE

    YT-720S  3Way Type 1/4

    YT-720S 3Way Type 1/4

    Explosion proof type 3way solenoid valve, YT-720S series outputs pressure to valves or changes output port direction.

    • Explosion proof type (ExdIICT6) solenoid valve.
    • Replacement of coil is easy due to AC and DC applied in same enclosure.
    • Manual switch enables user to test the operation when the power source is cutoff.
    • Connecting wires are easy because connection port can be rotated (265°).
    • Valve body is air pressure operating type, so the operation is very smooth with high durability.
    • Can be directly attached on actuator, because of NAMUR type design. Coil assembly can be rotated.
    YT-720D  4Way Type 1/4

    YT-720D 4Way Type 1/4

    Explosion proof type 4way solenoid valve, YT-720D series outputs pressure to valves or changes output port direction.

    • Explosion proof type (ExdIICT6) solenoid valve.
    • Replacement of coil is easy due to AC and DC applied in same enclosure.
    • Manual switch enables user to test the operation when the power source is cutoff.
    • Connecting wires are easy because connection port can be rotated (265°).
    • Valve body is air pressure operating type, so the operation is very smooth with high durability.
    • Can be directly attached on actuator, because of NAMUR type design. Coil assembly can be rotated.
  • POSITION TRANSMITTER

    STPM-5V  Smart Type

    STPM-5V Smart Type

    Electronic Position Transmitter SPTM-6V senses mechanical position change of stem being on the valve or similar device : and converses to current signal of DC4~20mA outputs.

    • Convenient wiring: 2 wire type
    • High accuracy and reliability
    • Simple change for RA v.s. DA action setting
    STPM-6V  Flameproof Smart Type

    STPM-6V Flameproof Smart Type

    Flame type of Electronic Position Transmitter SPTM-6V senses mechanical position change of stem being on the valve or similar device : and converses to current signal of DC4~20mA outputs.

    • Convenient wiring: 2 wire type
    • High accuracy and reliability
    • Simple change for RA v.s. DA action setting
    STPM-65V  Flameproof Smart Type (Stainless steel type)

    STPM-65V Flameproof Smart Type (Stainless steel type)

    Flame type of Electronic Position Transmitter SPTM-65V senses mechanical position change of stem being on the valve or similar device : and converses to current signal of DC4~20mA outputs.

    • Convenient wiring: 2 wire type
    • High accuracy and reliability
    • Simple change for RA v.s. DA action setting
  • LIMIT SWITCH BOX

    YT-850  Non-Explosion Type

    YT-850 Non-Explosion Type

    • Visual position indicator
    • Easy adjustment of cam position
    • 8 contacts of terminal ports
    • Dual conduit entries
    • Compatibility with any rotary motion actuator
    YT-870  Explosion Type

    YT-870 Explosion Type

    • Visual position indicator
    • Easy adjustment of cam position
    • 8 contacts of terminal ports
    • Dual conduit entries
    • Compatibility with any rotary motion actuator
    YT-875  Explosion Proof Type (Stainless Steel Type)

    YT-875 Explosion Proof Type (Stainless Steel Type)

    • Visual position indicator
    • Easy adjustment of cam position
    • 8 contacts of terminal ports
    • Dual conduit entries
    • Compatibility with any rotary motion actuator

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