CID A-A-50431B covers quick-acting, self-locking couplings for Bowes types pneumatic hose and piping connections where rapid coupling and uncoupling are required. Bowes types quick disconnect couplings are not suitable for use in fuel services or where fluids have a specific gravity less than 1.00. Typical services for Bowes types quick disconnect couplings are air, inert gases, and water.