'NOAH' Electric Actuator for Butterfly & Ball Valve
Features | Performance | Optional Equipments


Features   [top]

SEALING : Standard enclosure with o-ring sealing is watertight to IEC IP67, NEMA4 and 6. The actuator is available with optional explosion proof enclosure.

MOTOR : Squirrel cage motor is a totally enclosed type, with high stall torque and low inertia force to suit seating/unseating of valve. Motor Integrated thermal protectors prevent damage to the single/three phase motors.

WIRING : Electric wiring of control circuit is standardized for single and three phase power supply in a single module. Multiple terminal contacts sufficiently cover additional requirements such as auxiliary contacts for DCS, interlocking and other options.

COMPONENT ARRANGEMENT : Mechanical and electrical module can be separated easily to improve assembling, maintenance and alteration of electrical requirements. Actuator has enough internal space for optional accessories.

HANDWHEEL : Size of hand wheel is designed for safe and efficient emergency manual operation.

MANUAL OVERRIDE : Hand/auto declutching lever for hand wheel engagement, The power drive is automatically restored by motor start.

ADAPTION : Base mounting is standard to ISO 5211. Drive bush is removable for machining to valve stem requirement. The actuator position on the valve can be selected for 4 positions by means of 4 bolt holes in the drive bush.

PERFORMANCE : The precision worm and worm wheel mechanism transfer high torque with high efficiency and low sound level (Max. 50dB) even though small in size. Additional benefits include low backlash and longer life. Various output torque (Min. 3.5kgf-m, Max. 250kgf-m) cater for valves from 2" to 24".

INDICATOR : The indicator is directly mounted on the center column to provide positive visual indication of the valve position.

HEATER : A space heater inside the actuator prevents condensation due to temperature and weather changes. Standard 20W heater keeps all electrical components in the actuator clean and dry.

LIMIT SWITCH : The limit switch is activated by means of a simple and yet reliable cam mechanism mounted and driven by the center column. The valve position can be accurately and easily set with the simple adjustable switch mechanism. The set position is permanent and is not affected by over-travel resulting from manual operation.

TORQUE SWITCH : Cam activated torque switches are easily adjustable to provide over-load protection.

SELF LOCKING : Rolled steel worm gear on aluminum bronze worm wheel self-locks to prevent valve back drive on control signal or power failure.

Performance   [top]
TYPE Max Output torque Operating Time 60/50hz Max Stem Dia Motor class F Rated Current (mA) Number Of Handle turn
1phase 3phase
Kg-m 90 Deg. Mm W 110V 220V 220V 380V 440V
NA6 6 13/16 22 15 1200 450 N/A N/A N/A 8.5
NA9 9 13/16 22 25 1500 550 350 250 400 8.5
NA15 15 16/19 22 40 1900 880 550 400 400 10.0
NA19 19 16/19 22 40 2400 880 550 450 420 10.0
NA28 28 20/24 32 40 2800 1000 650 450 450 12.5
NA38 38 20/24 32 60 2600 1200 700 500 450 12.5
NA50 50 20/24 32 90 4500 1600 900 550 450 12.5
NA60 60 23/28 42 90 4600 1900 1400 550 500 14.5
NA80 80 23/28 42 180 5100 2200 1600 900 850 14.5
NA100 100 23/28 42 200 6000 2600 1900 1050 900 14.5
NA150 150 68/82 75 90 4600 1900 1400 550 500 43.5
NA200 200 68/82 75 180 5100 2200 1600 900 850 43.5
NA250 250 68/82 75 200 6000 2600 1900 1050 900 43.5

Optional Equipments   [top]
PCU IMS CPT
LCU EXP LCU PIU