Schrader Quick Connects (Twist Lock) - 391S
These are specialty pneumatic quick connects that feature a twist-sleeve disconnect and a simple push-connect action. They are not as common as the Industrial/Automotive/Aro Series and are typically not used in new installations due to their availability and lack of popularity. To ensure full air flow, the coupler and nipple I.D. should match the air line I.D. Interchange with Foster SHD, Parker Twist Lock, Tomco TL.