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Air Vent Grease Fittings

Air Vent Grease Fittings are used on differentials, transmissions, and gear boxes. Vent fittings allow air to escape and enter as the internal pressure increases or decreases. The cap on Air Vent Grease Fittings prevent water or dirt from entering. Vent fittings must be installed above normal level of lubricant to allow air to escape when pressure rises. Air Vent Grease Fittings are also referred to as Air Vent Zerk Fittings, Air Vent Lubrication Fittings, Air Vent Grease Zerks, or Atmospheric Vents.

OPENING PRESSURE NOTE: 1" of water = .03613 psi.

Air Vent Grease Fittings

AIR VENT GREASE FITTINGS * AIR VENT GREASE FITTINGS * AIR VENT GREASE FITTINGS * AIR VENT GREASE FITTINGS

SAE Number

Description

FIG

Opening Pressure

Alemite #

Lincoln #

H-200-VENT

1/8" PTF VENT

N/A

.78

.28

301370

5698

H-200-300805

1/8" PTF VENT

Felt Filter

1.00

.19

300805

N/A

H-200-304810

1/8" PTF VENT

1-3" Water

1.00

.19

304810

N/A

K-324970

DRIVE VENT

6-12" Water

1.00

0.8

324970

N/A

H-200-131000-T

1/8" PTF VENT

12" Water Max.

1.00

.19

131000-T

N/A

H-200-327240

1/8" PTF VENT

1 to 1-1/2 psi

1.00

.19

327240

N/A

H-200-330766

1/8" PTF VENT

2-1/2 to 4 psi

1.00

.19

330766

N/A

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Air Vent Grease Fittings

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