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Inbreathing Vacuum Vent (1.625″ – 12 Threads)
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The 6234 is a single purpose in-breathing spring loaded re-closing vacuum vent.  Designed to be stand alone or used as a supplement to the normal vent to provide additional in-breathing capacity when required. This vent may be used singly or in multiples according to requirements.

Meets requirements of 49CFR§178.345-10.

NOTE: While this vent does provide additional in-breathing capacity, it is recommended that positive vents, which will open with the emergency valve, be provided when discharging product with the manhole closed.

Part Numbers:
6234AL – Aluminum body with FKM Type A seals
6234ALB – Aluminum body with Nitrile (Buna-N™) seals
6234ALFS – Aluminum body with  fluorosilicone seals
6234ALP – Aluminum body with EPDM seals

Add suffix “277” for vent with 30x30x.012 screen.