The 64900 is a new hydrant fueling coupler designed to supersede the 60700-1. It is used for air reference pressure control systems. Three other versions, the 64901, the 64902 for digital pressure control systems, and the 64903, which is electro-hydraulically controlled. Many new features have been incorporated into the design of the 64900. Most of these features (changes) have been at the request of long time users of the 60700-1 Hydrant Fueling Coupler, the standard of the industry for over 25 years.
