Flat Face Couplings, a Contamination-Proof System
Modular machinery and equipment stand out for
providing versatility: the option of choosing an attachment on a
standard base allows operations in different working conditions and the
efficient execution of different tasks. For example, a mechanical boom on
an Earth-moving machine can be fitted with different sized buckets or grippers
so that a single vehicle can manage an entire worksite by coupling different
hydraulic accessories.
The downside of this versatility is that the
hydraulic circuit used to operate the machinery is exposed to greater risks
because the line is frequently connected and disconnected. If not managed
correctly, this can compromise operations or even cause damage. Undoubtedly,
the hydraulic couplings must ensure that the circuit is sealed tightly,
so that even when the fluid reaches working pressure or the line is subjected
to mechanical stress (such as twisting or thrusts), the connection points
remain secure and do not leak.
Another very important aspect is the ability
to quickly couple and uncouple the line in order to maintain a high
productivity rate, even when frequent attachment changeovers are called
for. The risks associated with
circuit contamination, however, are often disregarded.
The Risks of Hydraulic Fluid Contamination
When the hydraulic line is disconnected, the
two ends can become entry points for impurities and foreign bodies. The dirt
deposited in the male and female connectors can, depending on the type of
coupling used, come into direct contact with the hydraulic fluid and
be transported along the circuit to the pump, damaging the mechanical
components and the structure itself.
These impurities can be:
·
Solid: traces
of Earth or even dust can compromise the integrity of the circuit which
reduces lubrication and increases friction on the walls and mechanisms. This causes premature wear and may result in structural
damage and machinery malfunctions;
·
Chemical: water can alter the composition of the hydraulic fluid, reduce
its ability to transmit power, cause unwanted chemical reactions that form
acids and rust on the components, as well as lead to obstructions by forming
ice in low-temperature environments.
·
Air: unlike
solids and chemicals, tends to dissolve in the flow. There are instances, however, in which this
does not occur and imbalances are created in the temperature and pressure of
the hydraulic fluid. This leads to loss
of control over the system.
There are different solutions available which
help to reduce the risks of contamination, but the most effective one is the flat face quick coupling.
Flat Face Couplings Reduce Contamination
The male and female connectors are produced
with flat-faced valves and spring mechanisms so that, when coupled, the fluid
does not come into direct contact with the surfaces that have been exposed to
the outside. Consequently, the risk of contamination, compared to other
quick coupling systems, is significantly reduced in addition to preventing
leaks during coupling and decoupling.
The most effective way of preserving the
circuit, however, is to clean the couplings and remove any impurities. Here
again, flat face systems have an advantage over other models because the
shape of the valves makes them easier and faster to clean.
Stucchi offers its customers the best
technology for flat face quick couplings, perfected over sixty years to become
the reference model for the ISO 16028 standard. The flat face coupling is the ideal solution
for connection safety, speed in
coupling/uncoupling and prevention of leaks and contamination. Contact us to find out more about a contamination proof
hydraulic system, whatever your requirement.