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 Model Number |
Balem 531 / 25A~80A |
Special Features
- Operates hydraulically independent of any external power sources and is
easy to install without additional pipes
- Low risks of malfunction due to its unique inlet filter
- Complete stainless steel construction for demineralized water
- Ideal for installations where high pressure flow is instantly required
- Fitted with an adjustable flow limiter on its bonnet
Balem 531 is a buoyancy type of water level control valve which is pilot integrated
as one body and controls the supply of demineralized water in production lines
such as semi-conductor, electronic parts and cathode-rag tube factories as well
as normal water level control. It is entirely manufactured with stainless steel
and enchanced the performance of Balem 421 (Combi Valve). It has many features
such as total independence from any external power sources due to its compact
hydraulic/mechanical construction, integrated pilot and inner control type.
Therefore, it is easy to install, the valve has semipermanent duration and tight
shut-off by piston style opening/closing. The unique inlet filter can prevent
malfunctioning of the valve caused by foreign particles.
Specifications
| BALEM531 |
|
Model No.
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531-025
|
531-032
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531-040
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531-050
|
531-065
|
531-080
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Size
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25A(1")
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32A(11/4")
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40A(11/2")
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50A(2")
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65A(21/2")
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80A(3")
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Operating
Pressure
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0.05~0.98 MPa(0.5~10kgf/㎠)
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Test
Pressure
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1.72MPa(17.5kgf/㎠)
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Media
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Water, Oil (Order-Made)
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Temperature : 0°C ~ 80°C
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Weight
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1.7kg
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2.1kg
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2.5kg
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3.0kg
|
4.7kg
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6.5kg
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Dimensions
(mm)
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Size
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Model No.
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H1
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H2
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H3
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W(Ø)
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L
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D(Ø)
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25A
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531-025
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134
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56
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53
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745
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324
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124
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32A
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531-032
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152
|
64
|
63
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82
|
336
|
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40A
|
531-040
|
169
|
76
|
68
|
88
|
342
|
|
50A
|
531-050
|
174
|
76
|
73
|
99
|
367
|
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65A
|
531-065
|
200
|
87
|
88
|
115
|
387
|
|
80A
|
531-080
|
226
|
103
|
98
|
130
|
405
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Materials
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Item No.
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Description
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Material
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1
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Body
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SSC13
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2
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Cap
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SSC13
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3
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Piston
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SSC13
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4
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Piston Ring
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P.T.F.E
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5
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Snap Ring
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STS304
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6
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Piston Guide
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SSC13
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7
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Disc Seal
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N.B.R
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8
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Pilot Tube
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STS304
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9
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Coil Spring
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STS304
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10
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Strainer
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STS301
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11
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Pilot Valve Assy
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STS304
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12
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Float Ball Assy
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STS304
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13
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Name Plate
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STS304
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14
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Bolt
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STS304
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15
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Spring Washer
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STS304
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16
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Bolt
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STS304
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17
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Spring Washer
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STS304
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18
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O-RIng
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N.B.R
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Flow Chart
Standard Piping Diagram
Principle of Operation
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Open
When the water level in reservoir becomes low, the chamber connecting
with pilot valve inside of body becomes in the condition of atmospheric
pressure as opening pilot valve. At this time the power which subtracts
the weight of piston assembly paying regard to buoyancy and the reaction
force of spring from the power which multiply the difference of width(A-B)
by the pressure of fluid supply lifts up piston and fluid can flow toward
outlet.
Close
When the water level in reservoir reaches to high water level just, pilot
valve will automatically close. In this point, the chamber pressure inside
of body is the same with the pressure of inlet by water route through
the chamber and the liquid room of inlet, fluid flowing toward outlet
will close since disc closes valve seat as moving downward by the weight
of piston assembly and the power of spring. At this time, liquid pressure
by the area of valve seat is total power of valve closing.
Control Shaft
Since flow rate out will be adjusted by the cycle height of piston moving,
the cycle height of piston can control using control shaft same as the
figure and can control flush out pressure and meeting spot condition.
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Applications
- As a replacement for under ground/roof top, low water level tanks ball
type float valve.
- Substitute for high and low levels control mechanical valves and electrodes.
- Various types of oil tank float control valves.
- Demineralized water and quarantine for semiconductors, electronics, and
processing areas.
Patents
- Korea Patent No. : 0207682
- US Patent No. : 4830042
- Japan Utility Model NO. : 2014053
Installation
- Refer to the standard piping diagram when installing the valve.
- Install near a manhole, install a union for ease of maintenance, repair,
and servicing.
- Before installation, finish to clean pipeline.
- A receiver alarm system needs to be installed in monitoring room for early
detection of malfunction.
- To prevent waves while filling, an induction tube with syphon braking hole
must be installed.
- The water level sensor must be placed in the following order ;
- low water level(pump start)
- high water level(pump stop)
- warning water level(alarm control fail)
- emergency stop(closing pilot valve)
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