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    Single-Lock Couplings (for Nitrogen use only)

    Unique to Campbell, this couplings’ patented yellow Nitrogen warning ring identifies it “FOR NITROGEN USE ONLY”. The yellow ring also acts as a secondary locking feature. The coupling meets OSHA regulation 29CFR1915.131 and MSHA 30 CFR65.13021 requirements for air hose couplings.



    Male x Hose (with Nitrogen ring)
    Male x Hose (with Nitrogen ring)
    Male x Male NPT (with Nitrogen ring)
    Male x Male NPT (with Nitrogen ring)
    Male x Female NPT (with Nitrogen ring)
    Male x Female NPT (with Nitrogen ring)
    Female x Hose (with Nitrogen ring)
    Female x Hose (with Nitrogen ring)
    Female x Female NPT (with Nitrogen ring)
    Female x Female NPT (with Nitrogen ring)
    Female x Male NPT (with Nitrogen Ring)
    Female x Male NPT (with Nitrogen Ring)