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特克、PLT等知名品牌在中国的特约经销商。
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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
spongy structure has a thin smooth
layer which wears out slowly to extend
lifetime.
Heavy Duty
Designed to solve the most difficult
cases. The balls contain a mixture of
polishing agent and rubber, ensuring a
continuous and constant efficiency
without causing damage to the tube
structure
Abrasive balls (R)
Used in specific conditions for a short
time period. The carborundum content
in the balls abrades hard deposits. The
use of these type of balls are
recommended only when the CTCS
does not run continuously and are
manufactured only upon request. They
are available in three different grades :
- Fully coated (Y)
- Ring coated with Corundum (Z)
- Blended with Corundum (X)
STARTWELL气动马达SDA077P
储能起动马达 厂家：STARTWELL 型号：SDC040-1
英国STARTWELL是柴油发动机机械起动器的领先企业，产品适配于2.5升-12升的发动机上，具有隔爆，防水及完全无电等性能，作为主要或紧急起动装置，适用于煤矿及石油钻塔等恶劣环境下。其产品有迷你型，中型，大型，超大型及重载型。
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