Pilot Chokes Hydraulic Tip

Pilot Chokes Hydraulic Tip

Pilot chokes are flow controls mounted between the pilot valve and the main spool of a two-stage directional valve.  Often they are mistaken for flow controls that determine the speed of the actuator but pilot chokes actually control the speed at which the main valve...
Understanding ISO 4406 Cleanliness Codes

Understanding ISO 4406 Cleanliness Codes

ISO 4406 Cleanliness Codes are used to express the cleanliness level of hydraulic oil. The particulate contamination level per milliliter of fluid is determined for 3 particle sizes: 4 micron, 6 micron and 14 micron, and the cleanliness level is defined by three...