Please ensure all fields are filled in completely.
To view previous winner: Click Here


Personal Information:


Going to college is a big financial commitment. Write an essay that outlines how much you expect to spend to finish your schooling, how you intend to pay for your schooling, and what you expect your job to be once you are finished your schooling. There is no word limit for the essay.

Hydraulic Control Valve

Hydraulic Control Valve

around the web

The control valve is a device that directs the fluid to the actuator. This tool would consist of cast iron or steel spool that is situated in a housing. The spool slides to various places in the housing. Intersecting grooves and channels direct the fluid based on the spool's location.

The spool has a neutral or central position that is maintained by springs. In this position, the supply fluid is returned to the tank or blocked. If the spool is slid to one direction, the hydraulic fluid is routed to an actuator and provides a return path from the actuator to tank. When the spool is moved to the opposite side, the supply and return paths are switched. Once the spool is allowed to return to the neutral or center position, the actuator fluid paths become blocked, locking it into position.

Usually, directional control valves are designed so as to be stackable. They normally have one valve per hydraulic cylinder and a fluid input which supplies all the valves within the stack.

Tolerances are maintained extremely tightly, so as to deal with the higher pressures and to avoid leaking. The spools will normally have a clearance within the housing no less than 25 µm or a thousandth of an inch. So as to avoid distorting the valve block and jamming the valve's extremely sensitive components, the valve block would be mounted to the machine' frame by a 3-point pattern.

Solenoids, a hydraulic pilot pressure or mechanical levers might actuate or push the spool left or right. A seal allows a part of the spool to stick out the housing where it is easy to get to to the actuator.

The main valve block is generally a stack of off the shelf directional control valves chosen by capacity and flow performance. Several valves are designed to be on-off, while some are designed to be proportional, like in valve position to flow rate proportional. The control valve is one of the most sensitive and expensive parts of a hydraulic circuit.

pdf Click to Download the pdf

Los Angeles Forklift Parts
An alternator is actually a machine that transforms mechanical energy into electric energy. It does this in the form of an electrical current. In essence, an AC electric generator could likewise be labeled an alternator. The word normally refers to a...

A brake wherein the friction is supplied by a set of brake pads or brake shoes which press against a rotating drum unit known as a brake drum. There are several specific differences between brake drum types. A "brake drum" is normally the definition...

Carriage Rollers
Carriage rollers are specifically designed bearings that are used on lift masts to be able to help them work within tough environmental conditions. Lift masts are often subjected to oscillations, shocks, vibrations and high dynamic and static loads....

Carriages and Carriage Parts
There are actually 4 sizings of hook type fork carriages rated by the blade carriage lifting capability. Hook type tine carriages have been uniform. The carriage bar spacing for Class 1 is roughly thirteen inches and the Class 1 carriage is rated...

Control Valves
The earliest automated control systems were being utilized more that two thousand years ago. In Alexandria Egypt, the ancient Ktesibios water clock constructed in the 3rd century is thought to be the very first feedback control equipment on record. T...

Lift trucks are accessible in many different models which have different load capacities. Nearly all average lift trucks used inside warehouse settings have load capacities of one to five tons. Larger scale models are utilized for heavier loads, like...

A differential is a mechanical device that could transmit torque and rotation through three shafts, frequently but not all the time employing gears. It often operates in two ways; in vehicles, it provides two outputs and receives one input. The other...

Drive Axles
The piece of equipment which is elastically fastened to the framework of the vehicle using a lift mast is called the forklift drive axle. The lift mast connects to the drive axle and could be inclined, by no less than one tilting cylinder, around the...

Lift Parts Express
If you are in the market for a new, used, or remanufactured forklift truck part, you have come to the right place. We offer superior service with a high degree of professionalism. Call us today at:

TOLL FREE: 1-888-695-7994
Los Angeles, California


Email Us
About Us