Description
TA294-R Breather Valve
High-Flow, Two-Way Pressure Relief for Larger Transit Cases
The TA294-R breather valve has been developed to provide a cost-effective, two-way pressure relief solution for transit cases and similar applications with internal volumes of up to 8 cubic feet. It is based on the TA292-R model but features a longer body and increased airflow capacity. The valve provides a flow rate of 1.0 SCFM at 1.5 to 2.0 psi above the set pressure. Standard reseal pressures range from 0.5 psid to 3.0 psid.
The valve is tamper-resistant and requires no field maintenance. It is constructed from corrosion-resistant materials, with a silicone rubber sealing element. Each unit is supplied with a hex nut, washer, and gasket. A manual push-button pressure release is included as standard on all TA294-R valves, allowing the user to equalise internal and external pressures when opening the container.
Materials:
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Housing, Hex Nut & Washer: Aluminium alloy
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Gasket: Complies with AMS-R-6855, Class II, Grade 60
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Finish: Alodine-coated housing with anodised hex nut
Mounting Details:
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Mounting Hardware: Gasket, washer, and hex nut included
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Mounting Hole Diameter: 0.78 ± 0.015 in. (20 ± 0.4 mm)
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Maximum Wall Thickness: 0.10 in. (3 mm)
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Installation Torque: 25–35 in-lbs (3.0–4.0 N·m)
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Weight: 0.02 lbs (32 grams)
Threaded Boss Installation:
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Thread Size: 0.750-16 UNF-2B
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Counterbore Requirement: None
For enclosure compatibility, including NEMA and IP rating guidance, please contact Arcadia Desiccant‘s engineering department.
Flow Performance – Pressure and Vacuum Relief Options:
| Dash No. | Reseal Pressure* | Flow Rate |
|---|---|---|
| -05 | 0.5 psid | 1.0 SCFM† @ 2.0 psid |
| -10 | 1.0 psid | 1.0 SCFM† @ 2.5 psid |
| -15 | 1.5 psid | 1.0 SCFM† @ 3.0 psid |
| -20 | 2.0 psid | 1.0 SCFM† @ 3.5 psid |
| -25 | 2.5 psid | 1.0 SCFM† @ 4.5 psid |
| -30 | 3.0 psid | 1.0 SCFM† @ 5.0 psid |
*To convert psid to millibars, multiply by 69
†To convert SCFM to litres per second, multiply by 0.472
Pressure and vacuum dash numbers may be mixed as required for specific applications (e.g., TA294-05-15-R).
Before generating technical drawings or specifying part numbers, please contact Arcadia Desiccant for up-to-date configuration details.



