Group 29 Linear Valve Actuators
Mechanical Features
Gear Train:
The Group 29 linear globe valve
actuator utilizes a high-efficiency
gear train designed for
performance, long life, and
minimal wear. It consists of a
combination of precision-cut alloy
steel and ductile iron spur gears
and a precision ball screw. Beck
Spur gears are exclusively made
at our factory to ensure the high
quality demanded of the Group 29
products.
Manual Operation:
Group 29 linear valve drives can
be manually operated, without
power, by a Handwheel directly
connected to the drive motor
shaft. This allows positioning of
the valve in the absence of AC
power.
Tight-Seater™:
Group 29 linear valve drives are
equipped with a Tight-Seater™ device that ensures the valve is
positively seated at the closed
position.
Self-Locking Mechanism (SLM):
A self-locking mechanism is an
integral part of the Group 29
linear valve drive system. The
SLM is a coupling that transmits
motor torque to the gear train,
but instantly locks in place when
the motor is de-energized. This
prevents back-driveing due to
dynamic valve load.
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