Caution: Do not completely fill syringe barrels. The optimum fill is a maximum 2/3 of the barrel
capacity and 1/2 of the barrel capacity when using the EFD blue LV Barrier
™
piston.
For best results, we strongly recommend that you use a piston as part of your dispensing system.
The white EFD SmoothFlow
™
piston is
appropriate for most fluids and has
several advantages.
• First, vacuum adjustment is less
sensitive.
• Second, the piston prevents fumes
from the fluid being exhausted into
the work environment.
• Third, the piston prevents fluid
backflow into the dispenser if the
syringe barrel is inadvertently turned
upside down.
• Fourth, the piston makes it easy and
safe to change tips without dripping.
For watery solvents and cyanoacrylates,
request the blue EFD LV Barrier piston,
available in 3cc and 10cc sizes. If you are
dispensing an RTV silicone and find that
the piston bounces and causes stringing,
request the EFD orange, flat wall piston.
Filling procedure for pourable low and medium
viscosity fluids
If the fluid you are dispensing is pourable, take the syringe barrel, twist on
an orange tip cap and pour your fluid in. Insert a white SmoothFlow piston
and carefully press down until it contacts the fluid. The syringe barrel is
now ready for use.
Filling procedure for thick fluids
If your fluid is thick or non-leveling, you can spoon it into the syringe barrel with a spatula. Or, if the
fluid comes packed in a 1/10 gallon (300 ml) cartridge, try loading the barrel with a caulking gun.
Then, press the SmoothFlow piston to move the fluid to the bottom of the
syringe barrel and remove trapped air.
Trapped air in thick fluids can lead to drooling and oozing. Also, repetitive air
cycles can bore tunnels through non-leveling fluids, causing spitting and
inconsistent deposits. The SmoothFlow piston eliminates these problems. It
prevents tunneling by providing a barrier to the pulsed-air cycles. And it
prevents oozing by responding to the pressure of trapped air with a slight suck-
back movement after the dispense cycle.
Filling
the Syringe
Barrel
13
Remember
For best results, EFD strongly recommends the use of a
piston as part of your dispensing system.
Do not tip the barrel
upside down or lay flat.
This will cause the liquid
to run into the dispenser.
When changing tips
or attaching a tip cap,
snap the safety clip
completely closed to
prevent any dripping
or bubbling.
Open
Closed
If you choose to not use a piston when dispensing
thin fluids, remember these important points.
Fumes cannot
escape.
No air gap when
using the
SmoothFlow
piston.
caulking gun
2/3 maximum fill
SmoothFlow piston
prevents fluid backflow.
2/3
maximum
fill
SmoothFlow
piston
