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Specifications & Dimensions Materials & Flow Chart
Standard Piping Diagram Applications, Patents & installation
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¡Ü No contamination of
media due to the use of Engineering Plastic ¡Ü Easy
to transport and install due to its light weight ¡Ü
No need for external energy sources ¡Ü Better flow
characteristics than conventional ball float valves ¡Ü Suitable
for use on high pressures due to its pressure actuated
pilot configutation
Balem
521 is a combination differential pressure hydraulic/mechanical
type level control valve utilizing the buoyancy of the
ballfloat and the system presure. Due to its simplicity
it requires neither external energy sources nor additional
mechanical assistance. The pilot style operation ensures
tight shut off and high flow characteristics, is unaffected
by relatively high pressures. Due to it¡¯s plastic construction
it is both lightweight and corrosion resistant.
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| BALEM521 |
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Model No
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521-015 |
521-020 |
521-025 |
521-032 |
521-040 |
521-050
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| Size |
15A(1/2") |
20A(3/4") |
25A(1") |
32A(1 1/4") |
40A(1 1/2") |
50A(2")
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| Operating Pressure
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0.05~0.98 MPa(0.5~10kgf/§²)
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| Test Pressure
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1.72 MPa(17.5kgf/§²)
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| End Connections
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Male threaded : KSPT(Standard)
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| Media
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Water, Oil (Order-Made)
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Temperature : 0°C ~ 60°C
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| Weight
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180g |
240g |
250g |
430g |
450g |
650g |
 (mm)
| Size |
Model No |
L |
H |
W |
D(Sø)
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| 15A |
521-015 |
386 |
53.0 |
51 |
120 |
| 20A |
521-020 |
401 |
69.5 |
72 |
120 |
| 25A |
521-025 |
401 |
74.5 |
72 |
120 |
| 32A |
521-032 |
442 |
92.0 |
108 |
120 |
| 40A |
521-040 |
444 |
100.0 |
108 |
120 |
| 50A |
521-050 |
454 |
118.0 |
128 |
120 |


| Item No |
Description |
Material
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| 1 |
Body |
Xenoy(PC/PBT)
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| 2 |
Cover |
Xenoy(PC/PBT)
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| 3 |
Diaphragm |
N.B.R
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| 4 |
Diaphragm Washer |
PP(PE) |
| 5 |
Pilot Pin |
POM
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| 6 |
Floating Ball |
HDPE
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| 7 |
Snap Pin |
POM
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| 8 |
Lever |
POM
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| 9 |
Coil Spring |
STS304 |
| 10 |
Screw |
STS304 |
| 11 |
Nut |
STS304 |
| 12 |
RH Tapping Screw |
STS304 |
| 13 |
Strainer |
HDPE
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¢º Standard Piping Diagram
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¡Ü For
Use on tanks in buildings, appartments and factories. ¡Ü As
a substitute for mechanical type ball float valves in
water tanks and underground water reservoirs. ¡Ü Substitute
for liquid level control valves and electronic type
level control valves.
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Korea Patent No. 0459333
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1. Do not exposure the product to direct sunlight for an extended period time. 2. Refer to the standard piping diagram when installing the valve. 3. Before installation, finish to clean pipeline. 4. It is recommended to install a strainer to prevent malfunction of the valve due to foreign bodies entering the valve. 5. The alarm receiver system needs to be installed in the monitoring room for early detection of overflow. 6. Install the valve near the manhole for easy testing or repair. 7. Fit the valve to the pipe using the flats provided on the inlet of the body. 8. To prevent waves while filling, an induction tube with syphon barking hole must be installed.
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