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A spring device which maintains the spool of a directional control valve in position.
what doesnt it do?! hmmmmmm
dfrere
On my 1998 Buick the valve was located near the battery. Mine was damaged during a hurried winter battery change.
valve releases stufff inside. puts out fire.
directional
Replace flasher
The hydraulic three-way directional control valve is designed to operate an actuating unit in one direction. It permits either the load on the actuating unit or a spring to return the unit to its original position.
A close center directional valve holds the position of the cylinder. This is because in its center position its 4 ports (4/3 way) are blocked. An open center valve on the other hand does not hold position in the center position. This valve is commonly used for motors because it handles system overloads or "shocks" to the system. All 4 ports are connected in the form of an H. This valve is sometimes called an H-mid position valve. I hope this answered your question. I'm a 1st year mech eng student so I might not have covered the details you were looking for.
is address bus uni or Bi-directional
omni-directional is the opposite of directional. A directional antenna receives or sends more signal from or to the front than the sides or back.
A snap throttle valve on a vehicle works by using dual internal valves that give a full on or off operation.