MS Pressure Relief Grease Fitting
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MS Pressure Relief Grease Fittings

MS Pressure Relief Grease Fittings are manufactured to meet Military (MIL-SPEC) Standards, which require detailed performance testing, extensive documentation, sampling, dimensional checks and traceability of materials. Commonly used on gear box housings and bearings, where excessive lubricant pressures are not desirable. These safety valves open at pre-determined pressures shown in the table below and can be used with either oil or grease.
SAE Products is on of the few AS9100 Certified "manufacturers" of MS pressure relief grease fittings in the USA.

MS Pressure Relief Fittings
Plunger Type (Valve on top)
PRESSURE RELIEF GREASE FITTINGS
MS PRESSURE RELIEF GREASE FITTINGS * MS PRESSURE RELIEF GREASE FITTINGS * MS PRESSURE RELIEF GREASE FITTINGS
SAE Number
Description
Min. psi Max. psi
FIG
A
B
X
Alemite
Lincoln
MS-35670-1A
1/8"-PTF
1/4
1
10
1/2"
19/64"
7/16"
317400
N/A
MS-35670-2A
1/8"-PTF
1
5
10
1/2"
19/64"
7/16"
47200
N/A
MS-35670-3A
1/8"-PTF
7.5
15
10
1/2"
19/64"
7/16"
47640
N/A
MS-35670-4A
1/8"-PTF
15
25
10
1/2"
19/64"
7/16"
323060
N/A
MS-35670-5A
1/8"-PTF
45
80
10
1/2"
19/64"
7/16"
47100
N/A
MS-35670-7A
1/8"-PTF
400
650
10
1/2"
19/64"
7/16"
50500
N/A
MS Pressure Relief Fittings
Ball Type (Valve on side)
PRESSURE RELIEF GREASE FITTINGS
MS PRESSURE RELIEF GREASE FITTINGS * MS PRESSURE RELIEF GREASE FITTINGS * MS PRESSURE RELIEF GREASE FITTINGS
SAE Number
Description
Min. psi Max. psi
FIG
A
B
X
Lincoln
MS-35670-1B
1/8"-PTF
1/4
1
12
1/2"
19/64"
7/16"
5685
MS-35670-2B
1/8"-PTF
1
5
12
1/2"
19/64"
7/16"
5677
MS-35670-3B
1/8"-PTF
7.5
15
12
1/2"
19/64"
7/16"
5678
MS-35670-4B
1/8"-PTF
15
25
12
1/2"
19/64"
7/16"
5679
MS-35670-5B
1/8"-PTF
45
80
12
1/2"
19/64"
7/16"
5680
Grease Fittings / Zerk Fittings Home Page
SAE Products 1709 Husted Rd. (#4) Conway, SC 29526 - Phone:1-800-588-8480 Fax: 1-843-349-0738

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