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2. Solenoid valve - Wikipedia

   en.wikipedia.org/wiki/Solenoid_valve

   Solenoid valves. A solenoid valve is an electromechanically operated valve.. Solenoid valves differ in the characteristics of the electric current they use, the strength of the magnetic field they generate, the mechanism they use to regulate the fluid, and the type and characteristics of fluid they control.

3. Denison Hydraulics - Wikipedia

   en.wikipedia.org/wiki/Denison_Hydraulics

   Denison Hydraulics Inc., originally known as the Cook Motor Co., was founded in 1900 in Delaware, Ohio, as a manufacturer of heavy duty industrial gasoline engines. The main problem was that they were big, heavy, and only single-cylinder. For example, a typical 50 hp engine weighed 3 tons. After World War I, Mr. Cook wanted to retire. Bill ...

4. Solenoid (engineering) - Wikipedia

   en.wikipedia.org/wiki/Solenoid_(engineering)

   Hydraulic solenoid valves are in general similar to pneumatic solenoid valves except that they control the flow of hydraulic fluid (oil), often at around 3000 psi (210 bar, 21 MPa, 21 MN/m 2). Hydraulic machinery uses solenoids to control the flow of oil to rams or actuators. Solenoid-controlled valves are often used in irrigation systems ...

5. Variable force solenoid - Wikipedia

   en.wikipedia.org/wiki/Variable_force_solenoid

   A variable force solenoid (VFS) is an electro-hydraulic device that controls pressure proportionally or inversely proportionally to a signal (voltage or current) obtained from the on-board controller of a powertrain. A low flow VFS is used as a signal level devices for transmission line pressure control or application of clutches.

6. Solenoid - Wikipedia

   en.wikipedia.org/wiki/Solenoid

   A finite solenoid is a solenoid with finite length. Continuous means that the solenoid is not formed by discrete coils but by a sheet of conductive material. We assume the current is uniformly distributed on the surface of the solenoid, with a surface current density K ; in cylindrical coordinates : K → = I l ϕ ^ . {\displaystyle {\vec {K ...

7. Electrohydraulic servo valve - Wikipedia

   en.wikipedia.org/wiki/Electrohydraulic_servo_valve

   The servo valves of the World War II-era were similar to this — using a solenoid to drive a spool valve. Advancement of EHSVs took off in the 1950s, largely due to the adoption of permanent magnet torque motors as the first stage (as opposed to solenoids).