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Breather Valve TA321


This minimum profile Breather Valve has a captive knurled twist knob for hand operation. The valve is black anodized and can be used in thin wall containers.  It mounts through a 0.50 in. (13 mm) diameter hole. Meets MS18014-1.

Materials Housing - Aluminum
Finish Housing - Anodize
Mounting Requirements Nut & gasket, provided with each valve
Mounting Hole Diameter 0.50 ± 0.015 (12.7 ± 0.38 mm)
Installation Torque 15-20 in. - lbs. (1.7-2.3 N•m)
Maximum Wall Thickness 0.08 (2 mm)
Weight 0.013 lb. (6 grams)

Add washer for wall thickness less than 0.02 (0.5 mm). (P/N MS15795-855, order separately.)
For threaded boss installation: 0.468-32 UNS-2B; 0.50 ± 0.015 (12.7 ± 0.38 mm) diameter X 0.02 (0.5 mm) minimum deep counterbore required for thread relief.

The TA321 is appropriate for use on NEMA 1, 2, 3, 3R, 3S, 4, 5, 6, 12, 12K, and 13 enclosures, as well as IP65/IP67 enclosures. This item may also be appropriate for use on other NEMA or IP enclosures, depending upon the application. Contact AGM's Engineering department for more information.

TA321 Manual Relief Valve drawing

Additional information


Housing-Aluminum Alloy



Mounting Requirements

Hex Nut & Gasket are provided with each valve

Mounting Hole Diameter

0.50 ± 0.015 (12.7 ± 0.38 mm)

Maximum Wall Thickness

0.08 in. (2 mm)

Installation Torque

15-20 in. - lbs. (1.7-2.3 N•m)


0.013 lbs. (6 grams)

AGM Container Controls, Inc.
3526 E. Fort Lowell Rd.
Tucson, AZ 85716

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