Technical datasheet
GN 743.8Oil level sight glasses
Oil level sight glasses
Brass / natural glass, resistant up to 180 °C
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Catalogue
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d1
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d2
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a
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d3
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d4
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e
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l1
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l2
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l3
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s
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p
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GN 743.8-11-R3/8-A
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11
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R 3/8
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6.4
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16.7
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Rp 3/8
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22
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13
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6
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10.1
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19
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1.34
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19
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GN 743.8-14-R1/2-A
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14
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R 1/2
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8.2
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21
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Rp 1/2
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27.5
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17
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7
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13.2
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24
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1.81
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10
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GN 743.8-18-R3/4-A
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18
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R 3/4
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9.5
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26.4
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Rp 3/4
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31
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18
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8
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14.5
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27
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1.81
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49
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|
GN 743.8-24-R1-A
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24
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R 1
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10.4
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33.2
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Rp 1
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40.5
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21
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9
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16.8
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36
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2.3
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92
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GN 743.8-32-R11/4-A
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32
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R 1 1/4
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12.7
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42
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Rp 1 1/4
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53
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24
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9
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19.1
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46
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2.3
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140
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GN 743.8-11-R3/8-B
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11
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R 3/8
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6.4
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16.7
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Rp 3/8
|
22
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13
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6
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10.1
|
19
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1.34
|
22
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GN 743.8-14-R1/2-B
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14
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R 1/2
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8.2
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21
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Rp 1/2
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27.5
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17
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7
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13.2
|
24
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1.81
|
40
|
|
GN 743.8-18-R3/4-B
|
18
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R 3/4
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9.5
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26.4
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Rp 3/4
|
31
|
18
|
8
|
14.5
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27
|
1.81
|
60
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|
GN 743.8-24-R1-B
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24
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R 1
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10.4
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33.2
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Rp 1
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40.5
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21
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9
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16.8
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36
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2.3
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80
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GN 743.8-32-R11/4-B
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32
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R 1 1/4
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12.7
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42
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Rp 1 1/4
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53
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24
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9
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19.1
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46
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2.3
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140
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GN 743.8-11-3/8NPT-A
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11
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3/8 NPT
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6.1
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17.1
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3/8 NPT
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22
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15
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6
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-
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19.1
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1.41
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27
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GN 743.8-14-1/2NPT-A
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14
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1/2 NPT
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8.1
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21.2
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1/2 NPT
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27.5
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16
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7
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-
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23.8
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1.81
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34
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GN 743.8-18-3/4NPT-A
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18
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3/4 NPT
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8.6
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26.6
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3/4 NPT
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33
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18
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8
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-
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28.6
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1.81
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55
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GN 743.8-24-1NPT-A
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24
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1 NPT
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10.2
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33.7
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1 NPT
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41.5
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22
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8
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-
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34.9
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2.21
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100
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GN 743.8-32-11/4NPT-A
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32
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1 1/4 NPT
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10.7
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42.2
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1 1/4 NPT
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51.5
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23
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9
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-
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44.5
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2.21
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150
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GN 743.8-11-3/8NPT-B
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11
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3/8 NPT
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6.1
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17.1
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3/8 NPT
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22
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15
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6
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-
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19.1
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1.41
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20
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GN 743.8-14-1/2NPT-B
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14
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1/2 NPT
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8.1
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21.2
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1/2 NPT
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27.5
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16
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7
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-
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23.8
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1.81
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32
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GN 743.8-18-3/4NPT-B
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18
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3/4 NPT
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8.6
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26.6
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3/4 NPT
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33
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18
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8
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-
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28.6
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1.81
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60
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GN 743.8-24-1NPT-B
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24
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1 NPT
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10.2
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33.7
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1 NPT
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41.5
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22
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8
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-
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34.9
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2.21
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88
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GN 743.8-32-11/4NPT-B
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32
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1 1/4 NPT
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10.7
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42.2
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1 1/4 NPT
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51.5
|
23
|
9
|
-
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44.5
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2.21
|
140
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Types
- Type A: with contrast screen
- Type B: without contrast screen
Body
Brass
CuZn40Pb2
Contrast screen
Technopolymer (Polysulfon)
- temperature resistant up to 180 °C
- Sight glass ESG-glass
- O-Ring rubber FPM (Viton®)
Identification by not black finish of the sealing ring
The conical thread of the oil level sight glasses GN 743.8 makes a metallic seal possible. When tightening the conical male thread R it blocks itself with the appropriate cylindrical female thread Rp.
With the datum plane a the R-male thread has the same thread diameter as the Rp-female thread, so that it can be screwed in by hand. The strong tightening by means of a tool increases the length of engagement and seals the screw connection. Additionally a sealant (hemp or teflon band) is usually used. The R-thread is „roughened“, so that the sealant does not shift when screwing in.
- EPDM O-rings
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Welding Sockets
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HGFT-HT-PR
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with prismatic window, high temperatures, technopolymer up to 140°C
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