PRODUCT INFORMATION

Valve Actuator

Seibu Valve Actuators Are Playing an Active Part Everywhere for Many Years. This Is a Fine Testimony to Their Safety.

Seibu valve actuators are used to control such fluid as water, air, and gas. They are most commonly used in water supply and sewerage systems, and highly regarded for durability, safety, and reliability.
They are also installed in a power, oil, gas, or chemical plant, and used as stop valves for hot and high-pressure steam or high-pressure gas. Therefore, there is enough variation to support special types, such as an explosion-proof type and a heat-resistant type.

Multi-Turn Type

The multi-turn type includes the following types.

Electric Type Manual Return Type

Electric Type Manual Return Type

This is an actuator with the mechanism that disables electric operation via an interlock switch in order to prevent danger in manual operation.
Operation is toggled by hand between manual and electric.

Electric Type Auto Return Type

Electric Type Auto Return Type

This is an actuator with the mechanism that automatically switches manual operation state to electric operation state by the command from the field or a remote site.

Manual Type

Manual Type

This is an actuator that is intended for manual operation only.
It can be used in various environments.

Function Manual Type Electric Type
Standard Integral Intelligent
Manual Operation
Electric Operation
Motor Reversible Device Incorporated
(Standalone Driving Possible)
PLC Function Incorporated
(Programmed Driving Possible)
Series Output Torque (Nm)
Manual LBH -
Manual Return Type LTRH ~120
LTKD ~12,000
Semflex-VM ~1,800
Auto Return Type LTRM ~120
LTMD ~12,000
Semflex-VM ~1,800

Part-Turn Type

The Part-Turn Type includes the following types.

Electric Type Manual Return Type

Electric Type Manual Return Type

This is an actuator with the mechanism that disables electric operation via an interlock switch in order to prevent danger in manual operation.
Operation is toggled by hand between manual and electric.

Electric Type Auto Return Type

Electric Type Auto Return Type

This is an actuator with the mechanism that automatically switches manual operation state to electric operation state by the command from the field or a remote site.

Manual Type

Manual Type

This is an actuator that is intended for manual operation only.
It can be used in various environments.

Function Manual Type Electric Type
Standard Integral Intelligent
Manual Operation
Electric Operation
Driving Possible With Only External Wiring for Power
Programmed Control Function Incorporated
Series Output Torque (Nm)
- BRM ~200,000
Manual Return Type LTRH/BRM ~3,000
LTKD/BRM ~600,000
Semflex-VM/BRM ~40,000
Auto Return Type SRH ~600
SRJ ~2,000
LTMD/BRM ~600,000
Semflex-VP ~2,000
Semflex-VM/BRM ~40,000
  • Sales Agency in Japan

  • enetork This is a sales distributor of transmissions in Kyushu and Yamaguchi regions.It mainly serves as a sales agency for Seibu products.
  • Technical Partner Outside Japan

  • 西電興産株式会社 This is a manufacturer of valve actuator with a top share in South Korea.
  • Wonder Chance Machinery Industrial Co.,LTD This is a manufacturer of valve actuator with a top share in Taiwan.
  • 南京西部瀚乔电机机械有限公司 This is a manufacturer that sells valve actuator in China.
  • 九品股份有公司 This is a manufacturer of gate actuator with a top share in Taiwan
  • Terms and Conditions for Using System