What is the function of orbital valve?
It is a small valve built in to the steering unit that allows the steering unit to act as a small hand operated pump (by turning the steering wheel), providing limited manual steering, should the engine, pump or a belt quit.
How does a power steering control valve work?
The power steering control valve directs fluid where to go when you turn the steering wheel. For example, when you turn the wheel to the right, the power steering control valve rotates so pressure is applied to the correct side of the cylinder, so your vehicle goes in the right direction.
What is orbit ball valve?
Orbit valve is a type of ball valve. Orbit valve employs a tilt and turn mechanism that eliminates seal rubbing. Seal rubbing is the main cause of failure in valves such as ball valves, gate valves and plug valves.
Are orbit valves ball valves?
Ideal for applications that require zero leakage and frequent operation, ORBIT rising stem ball valves are used globally in critical isolation applications. ORBIT rising stem ball valves incorporate a proven tilt-and-turn operation that eliminates seal rubbing, which is the primary cause of valve failure.
What is an Orbitrol valve?
This rotary slide valve is used for hydrostatic steering. When the steering wheel is turned, the steering unit dispenses a quantity of oil to the right or left which is proportional to the turning of the steering wheel.
What is hydraulic power steering?
Hydraulic power steering A hydraulic piston connected to the steering gear uses pressurized fluid to provide assistance when turning the wheel. The fluid moves via a pump that is driven by the engine — The issue is the pump is always using energy even when the steering wheel isn’t touched.
What pressure does power steering operate at?
Most steering gear applications would run between 1,100-1,300 psi with heavy vehicle high-demand applications on up to 1,550-1,600 psi. Rack-and-pinion steering, on the other hand, is generally happier at a lower operating pressure of 850-950 psi.
Are ORBIT valves ball valves?
What is valve trim?
Valve trim refers to the operating parts of a valve that are usually exposed to the process fluid.
What is ORBIT ball valve?
What are the two types of steering gears?
Basically, there are two types of commonly used steering gear systems present:
- Hydraulic.
- Electro-hydraulic type.
Why is a pressure control valve necessary on a power steering pump?
The pump contains a pressure-relief valve to make sure that the pressure does not get too high, especially at high engine speeds when so much fluid is being pumped.
How does an Orbit Valve work?
When an ORBIT valve begins to open, the core tilts far from the seat and line flow passes uniformly round the core face. This eliminates the localized high speed flow that generally creates uneven seat wear in standard ball, gate and plug valves. The core then rotates to the complete open position.
How does an orbital hydraulic motor work?
Orbital Hydraulic Motor: The inner gear ring is fixedly connected with the housing, and the oil entering from the oil port pushes the rotor to rotate around a central point. This kind of slowly rotating rotor drives the output through spline shaft and becomes orbital hydraulic motor.
Where to set the main relief valve on a hydraulic system?
If a main relief valve is used, it must be set above the priority circuit steering relief valve pressure setting. THIS is the hydraulic circuit feature that is of interest to us. Load Reaction is the infamous “return to center” feature.
How does a hand metering unit valve work?
Take a look at the hand metering unit valve, also known as an orbitrol valve. It’s a type of servo valve that quickly closes off its own flow after sending out the correct volume of fluid to the steering cylinders. This “correct volume” is based on the operator’s need for a sharper or more gradual turning radius, as you’ll see in the video.