Abstract: A valve assembly includes an excess flow shut-off mechanism for controlling flow between an inlet and an outlet of the assembly. The excess flow shut-off mechanism is adapted to automatically stop fluid flow through the valve assembly when the flow exceeds a specified flow rate. The excess flow shut-off mechanism prevents flow when it's set and allows flow when it's reset. The valve assembly also includes a reset mechanism for setting and resetting the excess flow shut-off mechanism independently of the flow rate.

Abstract: A tube connector including a tubular connector body having an inboard contact surface facing an outboard open end, a collet extending into the open end and towards the contact surface, and an o-ring positioned between the collet and the contact surface. The o-ring provides a fluid-tight seal between the connector body and an outer circumference of a tube inserted through the collet and into the connector body. The connector also includes a relatively rigid ring guide positioned between the o-ring and the collet. The ring guide is adapted to protect the o-ring and maintain the o-ring in a proper position for providing a fluid-tight seal and includes a sloped or radiused outboard surface for guiding an inserted tube and a sloped inboard surface for contacting the o-ring.