Pinch valves for reliable shut off of media flows – VZQA

The VZQA pinch valves from Festo offer an ideal alternative to
conventional diaphragm or ball valves in applications requiring smooth media
flows and reliable shut-off. Festo’s VZQA valves are particularly durable,
energy efficient, easy to service and flexible in use thanks to their open
architecture.

Pneumatic pinch valves offer a clean, reliable and technically
straightforward solution for controlling and shutting off a wide range of
media. These valves deliver reliability and durability to all kinds of
production processes dealing with liquid, fibrous, particulate or granular
substances. The VZQA product series from Festo offers modularity, flexibility,
durability, ease of cleaning and straightforward servicing.

Reliable flow rate

Festo’s VZQA pinch valves will be launched in two versions: an N/O
version for media pressures from 0 to 4 bar and an N/C version for media
pressures from 0 to 6 bar. A tubular elastomer pinch valve sleeve opens or
shuts off the flow by decreasing or increasing operating pressure as
appropriate to the version, without any additional actuators or risk of
blockage.

The pinch valves VZQA come with different connection caps, housing
materials and sealing components for a variety of configuration options, making
them extremely useful in optimising pneumatic delivery and metering systems,
powder coating systems as well as suction and compressed air control units. The
valve’s compact design saves valuable installation space.

Advantages over conventional
process valves

Key advantages include free passage minimising flow resistance,
continuously preventing blocks and clogging in the valve; impressive value for
money from direct air supply operation; straightforward servicing with the
sealing cartridge quickly changed in just a few simple steps without any
special tools; and quick and easy cleaning thanks to their full passage and
design with very little dead space.

Performance-packed design

Featuring an aluminium or stainless steel construction, Festo’s VZQA
pinch valves prove themselves in even the most challenging environments with their
internal parts also offering the same durability against external influences. The
VZQA withstands very high stresses in daily operation caused by abrasive,
corrosive, highly viscous or neutral influences, thanks to its special sealing
cartridge.

Energy efficiency

The pinch valve VZQA can be actuated with low
operating pressures. Depending on the medium and media pressure, an operating
pressure of just 0.3-1 bar is sufficient in filling and metering applications
to tightly shut off the media flow.

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