IAPMO PS 104-2019 covers a special connection for a dispensing equipment and specifies requirements for materials, physical characteristics, performance testing, and markings.

This dispensing equipment has a shut off valve and is intended for connection to faucets, janitor?s hose bibs, or similar type connections. The special connection should have a constant bleed so that any upstream backflow protection device, not rated for continuous supply pressure, will not be damaged.

This standard pertains only to the connection means and does not cover the dispensing equipment or its backflow protection. This standard covers general requirements, in addition to the description of the equipment and method of marking and identification.