Dribble Control for filling applications

Actuator inherent 2 or 3 stage flow control

Pneumatically engaged 'hard' travel stop for dribble flow
Selectable and changable dribble flow rate
Fully automatic operation
Available on all QTRCO rotary and linear actuators

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Dribble Control for batch filing ops

Full flow to rapidly fill vessels, change to slow fill to top off

Based on our proven tandem piston technology, QTRCO dribble control actuators employ two or more pistons on each end of the actuator. The inner most (primary) piston, when pressured, serves to fully open the controlled valve for maximum flow during initial fill. At a user defined fill level, pressure to the primary piston is exhausted allowing outward primary piston travel and valve closing motion - until the primary piston travel is stopped by the pressured tandem piston. The controlled valve permits a reduced flow rate to enable full but not excess fill. The tandem piston pressure is exhausted when full fill is obtained.