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Pressure
release valve is a kind of pressure protection
device, such as transformer, electric capacitor,
high-pressure switch, load switch, pressure
container and others’ safety device, used
to stop protect oil tank and container from
distorting or cracking. When the inner part
of electric equipment become error, the
oil in the tank is boiled away and produces
large quantity of gas to enhance inner pressure
of tank accurately. This pressure will cause
the distortion and even crack of the oil
tank if it is not released in time. When
the pressure in tank rises to the opening
value of pressure release valve, the |
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valve
will be opened within 2mS to fall the pressure
in time. While the pressure falls to close
value, the pressure release valve will be
closed reliably to make oil tank keep positive
pressure, to effectively prevent outer air,
moisture as well as other impurities entering
the tank, and it avoids the shortcoming
that after being operated, the parts of
safety channel should be replaced when the
electricity is cut, so it is more reliable
and more precise compared with safety channel.
Valid oil-gush caliber（mm）：Φ25、Φ50、Φ80、Φ130
Opening pressure （kpa）:15、25、35、55、70、85 |
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| specification： |
| valid caliber(mm) |
Φ8mm |
Φ12mm |
Φ16mm |
Φ18mm |
Φ25mm |
| opening pressure(kPa) |
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opening pressure
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20 |
25 |
35 |
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| limited deviation（kPa） |
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±5 |
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| closing pressure（kPa） |
12 |
13.5 |
19 |
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| sealing pressure(kPa) |
14 |
15 |
21 |
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| structure： |
| valid caliber |
D0 |
D1 |
D2 |
H0 |
H1 |
M |
dimension of installation
pole |
| Φ8 |
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M14×1 |
Φ6×80 |
| Φ12 |
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M16×1 |
Φ6×80 |
| Φ16 |
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48 |
55 |
15.5 |
15.5 |
M30×2 |
Φ6×80 |
| Φ18 |
39 |
48 |
55 |
15.5 |
18.5 |
M33×2 |
Φ6×80 |
| Φ25 |
39 |
48 |
55 |
15.5 |
18.5 |
M33×2 |
Φ6×80 |
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installation
and use：
1、pressure release valve should
be installed in the cover of oil tank
2、 there should be flanges that link pressure
release valve in oil tank’s valve, the shape
is as picture 1, and the dimension is as
table 2.
3、 the testing pressure device should be
removed before the pressure release valve
is put into use, or the valve can not be
opened.
4、 make sure that the valve is qualified
before leaving factory, and users should
not take it down randomly.
Maintain,
inspect and repair：
1. make use of each power-cut chance to
inspect and repair pressure release valve
1) whether the opening is flexible, if there
is block, eliminate it;
2) Clean out eyewinkers in valve;
3) Replace aging, distorted, damaged and
invalid sealing rubber washer;
4) Whether the parts are rusted, whether
the sealing rubber washer is damaged or
invalid;
2. users should operate it properly according
to operating instructions, our company carries
out “three guarantee” to products within
18 months from the installation date and
within 24 months from the day our company
sends goods to users. |
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