Foster LN Series 1/4" x 1/4" MPT Manual Plugs are interchangeable with Lincoln’s “Long Nose” series couplings and offer quick coupling of all air-operated equipment. They are only available in 1?4" body size, brass and steel construction. Type: One Way Shut-Off Rated Pressure: 300 psig Temp. Range: -40° to +250° Locking Device: Balls or Pins Manual - socket sleeve must be retracted to connect and disconnect. Locking feature prevents accidental coupler detachment Increased air flow due to a larger air passage. Automatic air check valve shuts off air instantly when uncoupled, providing leak-proof seal. Corrosion resistant steel for long service life. Free swivel helps prevent kinking or curling of air hoses.

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