Abstract: A connector system for coupling first and second venting devices, at least one of which comprises a flexible vent pipe, includes a venting device connector having first and second ends. A first end of the venting device connector includes an inner vent member having an outside diameter smaller than the inside diameter of the flexible pipe to which it is to be coupled. An outer flexible vent pipe restraining member circumferentially surrounds an end portion of the inner vent member and has an inside diameter substantially larger than the inner vent member, and generally larger than the outside diameter of a grooved exterior region of the flexible vent pipe to which the connector is to be coupled. A circumference reducer allows the first end of the venting device connector to be securely and releasably attached to the flexible vent pipe.