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Technos 胶球ST19N1
法国Technos天可诺胶球ST24H1
Technos天可诺胶球ST22N1
Type
S : Standard balls:
P : Extended life balls
R : Abrasive balls
Specification
T : Standard
G : Polishing
Y : Fully Coated
Z : Ring Coated with Corundum
X : Blended with Corundum
Diameter
From 16 to 42 mm
Increment 1 mm
Specific diameter
available on request
Hardness
J : Soft
N : Medium-Soft
F : Medium-Hard
H : Hard
Temperature
1 : Standard balls
up to 80°C
2 : Heat resistant
balls up to 140°C
BALL SIZE
Balls must be slightly
oversized (2 mm larger) to
apply enough pressure inside
the tube to ensure correct
cleaning.
This rule can be changed for
specific reasons
Larger diameter :
used for a longer ball-life
when the condenser pressure
drop is higher than usual. This
applies only when the type of
fouling allows the use of soft
or medium soft cleaning balls.
In other cases, the use of
extra oversized balls can lead
to ball blockage inside
condenser tubes, reducing the
heat exchange surface and
triggering tube corrosion. For
the above reason, balls must
not swell due to a chemical
reaction with water.
Smaller diameter :
when using abrasive coated
balls or when condensers are
equipped with protective
nozzles or when the CTCS
design does not prevent the
risk of the ball becoming
wedged between the strainer
bars. In this last case, the use
of harder but smaller balls can
be convenient
BALL TYPE
Standard (S)
Used continuously in normal
conditions for operation in freshwater
or sea water.
Soft for brass tubes, soft or hard for
SS or titanium tubes.
Extended life (P)
Used when water fouling is not severe
and can be wiped out easily. The
