in a multiple coupling lock system and method for an environmentally sealed filling or refilling of a first container or a first hose , a first coupling lock has an opening area which is opened . a first flexible conveyance unit has a first end connected to the first coupling lock in an environmentally sealed manner . a second opposite end of the first flexible conveyance unit connects to a second coupling lock in an environmentally sealed manner , the opening area of the first coupling lock being sufficiently large when opened to allow the second coupling lock to pass therethrough . the second coupling lock connects in an environmentally sealed manner to the first container or first hose . the system or method provides the ability to environmentally fill or refill the first container or first hose in an environmentally sealed manner .