Single Speed Hydraulic Pump
A single-speed
hydraulic hand pump is a simple and comparatively low-cost option and as you
pump the lever, the hydraulic oil is drawn from the pump’s tank towards your
hydraulic tool which may be a hydraulic cylinder, puller, or a press. When
using a single-speed hydraulic pump with a big tool such as a cylinder, the
plunger will develop by the same amount with each stroke of the pump’s handle.
The reason for this is that the amount of oil banished per full stroke is
always the same. For many applications, this is precisely what is required. But
for projects where a big cylinder or other tool needs to extend large
distances, this can be very much time-consuming and tedious and this is when a
two-speed pump can save a day.
Two Speed Hydraulic Hand Pumps
A two-speed
hydraulic hand pump switches from an early low-pressure, high oil movement
stage to a low-displacement and high-pressure stage. When used with a hydraulic
cylinder, this means the better oil flow in the first stage moves the cylinder
needle a longer distance with each stroke. When it reaches the switch pressure,
the two-speed pump changes from low to high-pressure pistons characteristically
when the cylinder reaches the load and starts working harder. A two-speed
hydraulic hand pump can be more beneficial than a single-speed one for
applications such as weight testing, hydraulic press, and long-stroke cylinder.
However, they are not suitable for jobs needful high pressure all the way.
Single-Speed and 2-Speed Hand Pump
Comparison
A single-speed
hydraulic pump delivers low flow with high pressure which is usually fine for
lesser stroke hydraulic cylinders, flange spreaders, and pullers. A two-speed
hydraulic hand pump makes high flow at lower working weights and can also
provide lower flow when it reaches the advanced working pressures. This is
particularly useful when the cylinder plunger or any other hydraulic tool has
far to travel earlier than the real work begins. Associated with a single-speed
pump, some two-speed types can decrease the number of handle strokes by as much
as 78 percent. Both types of pumps are obtainable with different oil
capacities, and in outlines to suit tools requiring both single and double-acting
hydraulic flow.
How Do a Two Speed Hydraulic Hand
Pumps Work?
A two-speed pump
is a hydraulic pump that usually contains a safety relief regulator and has an
internal setting for a pressure switch. Characteristically, it creates more
flow at lower working pressures and lowers flow at advanced working pressures.
This allows for the finest efficiency across increasing pressures in hydraulic
cylinders or some other hydraulic applications. When it starts in a manual hydraulic
tool, the two-speed pump is typically favoured as it allows for a lower handle
effort at advanced pressures, here is how it works:
Functions of a Two Speed Hydraulic
Hand Pumps
The two-speed
pump’s relief valve is usual to a pressure which is typically referred to as a
substitution pressure. When the pressure upsurges in the cylinder or hydraulic
system and reaches the exchange pressure, the two-speed pump switches from low
to the high-pressure piston. A two-speed pump will change from low to
high-pressure pistons when the cylinder hits the exchange pressure which is 200
PSI for example as the pressure is increasing. This exchange will occur
automatically internally. In RIVERLAKE HYDRAULIC manually operated hand pumps
come in aluminium or in steel. The HP227 and HP232 two-speed pumps are some of
the most common, manual hydraulic pumps, and their operation can be learned
easily.
Advantages of a Two Speed Hydraulic
Hand Pumps
While a
two-speed pump is typically a higher cost than a single-speed pump, a two-speed
pump bids many advantages. For instance, it is easier to operate physically at
higher pressures, with fewer requests on the operator. The RIVERLAKE HYDRAULIC manually operated two-speed pumps come in a variety
of models and most models features two-way valves, but four-way valves are also
available. With their relaxed operation and lightweight design, these pumps are
a great choice for all. The result which everyone chooses is the pumps that are
easy to operate, easy to repair, and service which helps in saving time and
money for our customers. The life expectancy of RIVERLAKE HYDRAULIC products
leads the market and our pumps provide power that lasts for generations.
Hydraulic hand pumps are very lightweight, and portable, and they do not
require an external power source. These pumps are cost-effective, very easy to
use, and ideal for workshop or field use applications.
Types of hydraulic pumps
Air hydraulic pump
A cost-effective
option for quicker and more efficient operations. No manual effort is essential
by the operator. Portable and perfect for workshop use, only standard air-line
supply is obligatory. Field use is possible if access to a compressor is
available.
Electrical hydraulic pump
The finest option
where large capacities of oil are required: e.g., multiple cylinder operations.
With the addition of diverse valve types, these pumps can effortlessly operate
multiple tools. The electric pumps are appropriate for stationary
installations.
Petrol hydraulic pumps
An excellent alternative where field operations are obligatory: e.g., construction sites and shipyards.
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