Part of the system is the hydraulic spool valve, which is a type of directional control valve. This valve balances out the pressure and flow of the hydraulic fluid in the system by shifting the fluid to turn a switch on or off .
What is spool in the spool valve?
A spool valve is part of a hydraulic system that directs the flow of hydraulic fluid . The valve is made up of spools that rotate or slide to block and open channels in a hydraulic system.
What is the function of spool valve?
Spool valves regulate the flow of fluid in hydraulic systems . Spool valves would slide backward and forward so that the fluid flow can be either in one direction or another around a circuit of pipes. Spool valves have two basic components, a cylindrical barrel in which slides a plunger or spool.
How do you test a hydraulic spool valve?
To check this, install a pressure gauge and flow meter in the drain/tank port line . All hydraulics work on differential pressure. If back pressure is excessive, the actuation pressure must overcome it first before it can move the spool. Most systems require minimum back/drain pressure to function smoothly.
What is a hydraulic motor spool valve?
MOTOR SPOOL (Also referred to as free-flow).
A spool designed to provide flow from “work” ports to “tank” when spool is in neutral position . This allows a motor to coast to a stop after the spool is placed in neutral position.
What is the difference between poppet and spool valve?
Unlike spool valves, poppet valves open an immediate flow path to the outlet . This results in a fast response time. ... The large surface area that is essential for poppets results in a higher flow rate. Poppet valves require small actuation strokes, which allows for shorter switching times.
What is a 2 spool valve?
2 spool hydraulic valve is a device used to control hydraulic systems . ... 2 spool hydraulic valve can manage the flow of hydraulic fluid from a hydraulic pump to an actuator. It can be open or closed, blocking of the route the fluid takes.
What is a quick spool valve?
The Quick Spool Valve has a butterfly valve that blocks a scroll of the divided housing , making the turbo act as if it were a small one. ... The switch can be wired up to open at a set point, so you don’t have to sacrifice peak power when the valve opens.
Are spool valve self cleaning?
The poppet valve
The axial sealing technology is resistant to contamination thanks to the self- cleaning effect as the air passes through the valve.
How do I know if my hydraulic valve is bad?
- System Cannot Reach Pressure. ...
- System is Over Maximum Pressure. ...
- Pressure Relief Valve is Leaking or Has No Pressure.
How can you tell if a hydraulic valve is bad?
Many of the failures in a hydraulic system show similar symptoms: a gradual or sudden loss of high pressure , resulting in loss of power or loss of speed in the cylinders. The cylinder(s) may not move at all, or if they do they may move too slowly or may stall under light loads.
What will happen if there is air trapped in the hydraulic system?
When air contaminates a hydraulic fluid, usually via the pump’s inlet, aeration, cavitation, or foaming can occur . Aeration is bad news, as it degrades the hydraulic fluid causing damage to the components of the system due to loss of lubrication, resulting in overheating and burning of the seals.
How do you adjust a hydraulic spool valve?
To adjust the spool valve, loosen the valve-locking nut on the side . Removing the locking nut gives you access to the adjustment screw. Turn the screw clockwise to raise the pressure, and twist it counter-clockwise to lower the pressure.
What is a floating hydraulic valve?
Hydraulic float valve
Its main task is to maintain a constant pressure previously set by the user , regardless of the viscosity of the oil and the degree of wear of the bearings of the device. ... The hyrdaulic float valve itself can be integrated in both the oil pump and oil bus lines.
How does a hydraulic valve work?
A hydraulic solenoid valve is a solenoid controlled directional valve used in a hydraulic system for opening, closing or changing the direction of flow of the liquid . The valve operates with a solenoid, which is an electric coil wound around a ferromagnetic core at its center.
