Document No.:KE-4011-03 Page: 1/27
1. Attention for user’s system
2. Product Features
2-1. KITZ FBS pneumatic valve actuator is provided with output torque characteristics suitable for
operation of KITZ smaller size ball valves.
2-2. KITZ FBS pneumatic valve actuator is designed for direct modular mounting of KITZ optional
accessories on the actuator housing.
3. Product Codes
F B S – 1
① ② ③
①Type of valves to operate ②Type of operation ③Actuator size
B…Smaller size ball valves
S…………Spring return 1…Size 1
① Holding valve position
KITZ pneumatic actuators Do not assure no leakage. Actuators do not hold
valve positions long time without continuous air supply. If you need to hold
valve position long time without continuous air supply, contact KITZ
Corporation or its distributors.
② Internal air residue of spring return type actuators
Out put torques of spring return type actuators indicate values without
internal air residue remains inside their cylinders. Please design your systems
to be able to exhaust internal air residue at spring return action. If internal air
residue remains in the cylinders, out put torque will be small and valves do not
open or close by spring return action.
① Do not pressurize spring return type actuator’s breathing port.
② Prevent entering dust, rainwater or waste into actuators through the breathing
port.
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