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Relief
Fittings
Used on gearbox housings and bearings.
The fittings open at pre-determined pressures as shown.
These fittings can be used with either grease or oil.
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| Part # |
Description |
Style |
Pressure |
Height |
Shank |
Hex |
Alemite # |
Lincoln # |
| MB317400 |
1/8" Npt w/Plunger |
Top Vent |
1/4-1 psi |
1/2" |
19/64" |
7/16" |
317400 |
|
| MB47200 |
1/8" Npt w/Plunger |
Top Vent |
1-5 psi |
1/2" |
19/64" |
7/16" |
47200 |
|
| MB47640 |
1/8" Npt w/Plunger |
Top Vent |
7-1/2-15 psi |
1/2" |
19/64" |
7/16" |
47640 |
|
| MB323060 |
1/8" Npt w/Plunger |
Top Vent |
15-25 psi |
1/2" |
19/64" |
7/16" |
323060 |
|
| MB47100 |
1/8" Npt w/Plunger |
Top Vent |
45-80 psi |
1/2" |
19/64" |
7/16" |
47100 |
|
| MB50500 |
1/8" Npt w/Plunger |
Top Vent |
400-650 psi |
1/2" |
19/64" |
7/16" |
50500 |
|
| MB321839 |
3/8" Drive w/Plunger |
Top Vent |
1-5 psi |
1/2" |
19/64" |
7/16" |
321839 |
|
| MB338382 |
1/8" Npt Leak proof |
|
80-140 psi |
9/16" |
11/32" |
7/16" |
338382 |
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| MB5677 |
1/8" Npt W/Ball |
Side Vent |
|
7/16" |
9/32" |
7/16" |
|
5677 |
| MB5678 |
1/8" Npt W/Ball |
Side Vent |
7-1/2-15 psi |
7/16" |
9/32" |
7/16" |
|
5678 |
| MB5679 |
1/8" Npt W/Ball |
Side Vent |
15-25 psi |
7/16" |
9/32" |
7/16" |
|
5679 |
| MB5680 |
1/8" Npt W/Ball |
Side Vent |
45-80 psi |
7/16" |
9/32" |
7/16" |
|
5680 |
| MB317400-4 |
1/4" Npt |
Top Vent |
1/4-1 psi |
31/32" |
31/64" |
9/16" |
|
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| MB47200-4 |
1/4" Npt |
Top Vent |
1-5 psi |
31/32" |
31/64" |
9/16" |
|
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| MB47640-4 |
1/4" Npt |
Top Vent |
7-1/2-15 psi |
31/32" |
31/64" |
9/16" |
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| MB323060-4 |
1/4" Npt |
Top Vent |
15-25 psi |
31/32" |
31/64" |
9/16" |
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| MB47100-4 |
1/4" Npt |
Top Vent |
45-80 psi |
31/32" |
31/64" |
9/16" |
|
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| MB50500 |
1/4" Npt |
Top Vent |
400-650 psi |
31/32" |
31/64" |
9/16" |
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| MB317400-6 |
3/8" Npt |
Top Vent |
1/4-1 psi |
1" |
15/32" |
11/16" |
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| MB47200-6 |
3/8" Npt |
Top Vent |
1-5 psi |
1" |
15/32" |
11/16" |
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| MB47640 |
3/8" Npt |
Top Vent |
7-1/2-15 psi |
1" |
15/32" |
11/16" |
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| MB323060-6 |
3/8" Npt |
Top Vent |
15-25 psi |
1" |
15/32" |
11/16" |
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| MB47100-6 |
3/8" Npt |
Top Vent |
45-80 psi |
1" |
15/32" |
11/16" |
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| MB50500-6 |
3/8" Npt |
Top Vent |
400-650 psi |
1" |
15/32" |
11/16" |
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| MB317400-8 |
1/2" Npt |
Top Vent |
1/4-1 psi |
19/64" |
9/16" |
13/16" |
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| MB47200-8 |
1/2" Npt |
Top Vent |
1-5 psi |
19/64" |
9/16" |
13/16" |
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| MB47640-8 |
1/2" Npt |
Top Vent |
7-1/2-15 psi |
19/64" |
9/16" |
13/16" |
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| MB323060-8 |
1/2" Npt |
Top Vent |
15-25 psi |
19/64" |
9/16" |
13/16" |
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| MB47100-8 |
1/2" Npt |
Top Vent |
45-80 psi |
19/64" |
9/16" |
13/16" |
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