Technical datasheet
HFTX-HT-GLOil level sight glasses for high temperatures
Oil level sight glasses for high temperatures
Technopolymer with high chemical resistance also suitable for solutions with glycol
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Catalogue
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Description
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d1
|
A
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B
|
D
|
d
|
s
|
Tightening torque
[Nm] |
L2
[J] |
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|---|---|---|---|---|---|---|---|---|---|---|
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|
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|
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|
|
|
|
|
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13663
|
HFTX.11-HT-GL-FKM-M16x1.5
|
M16x1.5
|
8
|
7
|
22
|
11
|
19
|
3÷5
|
8
|
4
|
|
13683
|
HFTX.14-HT-GL-FKM-M20x1.5
|
M20x1.5
|
10
|
8
|
26
|
14.5
|
22
|
4÷6
|
8
|
5
|
|
13729
|
HFTX.21-HT-GL-FKM-M26x1.5
|
M26x1.5
|
13
|
9
|
31.5
|
20.5
|
27
|
6÷8
|
15
|
7
|
|
13653
|
HFTX.9-HT-GL-FKM-1/4
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G 1/4
|
10
|
6
|
18
|
9
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15
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2÷3
|
8
|
4
|
|
13673
|
HFTX.12-HT-GL-FKM-3/8
|
G 3/8
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7.5
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7
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22
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11
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19
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3÷5
|
8
|
5
|
|
13693
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HFTX.15-HT-GL-FKM-1/2
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G 1/2
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10.5
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8
|
26
|
14
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22
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4÷6
|
8
|
7
|
|
13723
|
HFTX.20-HT-GL-FKM-3/4
|
G 3/4
|
10.5
|
9
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31.5
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20
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27
|
6÷8
|
15
|
9
|
|
13743
|
HFTX.24-HT-GL-FKM-1
|
G 1
|
11
|
10
|
40
|
25
|
34
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8÷10
|
16
|
13
|
|
13763
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HFTX.30-HT-GL-FKM-1¼
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G1 1/4
|
11.5
|
13
|
47
|
30
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40.5
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8÷10
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20
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34
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Material
Transparent technopolymer with a sulfonic base and therefore with a slightly bronzed colour.
The window consists of a continuous series of prisms which provide a clear and immediate reading of the level of the oil contained in the reservoir.
Packing ring
Green FKM flat washer.
Due to the special composition there is minimal creep; even under the action of the tightening torque, the gasket remains in shape, always ensuring an optimal seal.
Continuous working temperature
- Min. -40°C
- Max. +150°C (resistance even at peaks of +180°C).
Technical data
The tightening torque recommended in the table guarantees an optimal seal, even at temperatures +150°C.
It can also be used for tanks containing water or water/glycol solutions (up to 50%).
The impact resistance value L2 shown in the table was detected with impact tests in the centre of the window at room temperature.
In laboratory tests carried out with mineral oil type CB68 (according to ISO 3498), the sight glasses maintained a perfect seal at a maximum pressure of 1 bar at a continuous temperature of +150°C.
The maximum working pressure increases with the decreasing of the temperature.
Note
For use with other fluids with special additives, please contact ELESA Sales Department.
Accessories on request
Nickel-plated brass nut type GH. for fitting to reservoirs with wall thickness smaller than 5 mm.
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