A flexible trapway arrangement for connecting a toilet system to a drain line, the trapway arrangement comprising: - a trapway made up of resilient material; and - a trap mechanism arranged with the trapway, the trap mechanism being adapted to operate the trapway in a constricted state and a dilated state, wherein in the constricted state, the trap mechanism constricts at least a portion of the trapway to restrict a flow of components therethrough, and in the dilated state, the trap mechanism dilates the trapway to allow a flow of components therethrough, wherein the trap mechanism includes: a first support plate positioned to engage with one side of the trapway, the first support plate being positioned in the trap mechanism; a second support plate positioned to engage with an opposite side of the trapway, the second support plate being movable relative to the first support plate; and an actuation mechanism adapted to: move the second support plate against the first support plate, to adjust the trapway to operate in the constricted state, and move the second support plate away from the first support plate to adjust the trapway to operate in the dilated state, characterised in that the first support plate is fixedly positioned in the trap mechanism. - a trapway made up of resilient material; and - a trap mechanism arranged with the trapway, the trap mechanism being adapted to operate the trapway in a constricted state and a dilated state, wherein in the constricted state, the trap mechanism constricts at least a portion of the trapway to restrict a flow of components therethrough, and in the dilated state, the trap mechanism dilates the trapway to allow a flow of components therethrough, wherein the trap mechanism includes: a first support plate positioned to engage with one side of the trapway, the first support plate being positioned in the trap mechanism; a second support plate positioned to engage with an opposite side of the trapway, the second support plate being movable relative to the first support plate; and an actuation mechanism adapted to: move the second support plate against the first support plate, to adjust the trapway to operate in the constricted state, and move the second support plate away from the first support plate to adjust the trapway to operate in the dilated state, characterised in that the first support plate is fixedly positioned in the trap mechanism. in the constricted state, the trap mechanism constricts at least a portion of the trapway to restrict a flow of components therethrough, and in the dilated state, the trap mechanism dilates the trapway to allow a flow of components therethrough, wherein the trap mechanism includes: a first support plate positioned to engage with one side of the trapway, the first support plate being positioned in the trap mechanism; a second support plate positioned to engage with an opposite side of the trapway, the second support plate being movable relative to the first support plate; and an actuation mechanism adapted to: move the second support plate against the first support plate, to adjust the trapway to operate in the constricted state, and move the second support plate away from the first support plate to adjust the trapway to operate in the dilated state, characterised in that the first support plate is fixedly positioned in the trap mechanism. a first support plate positioned to engage with one side of the trapway, the first support plate being positioned in the trap mechanism; a second support plate positioned to engage with an opposite side of the trapway, the second support plate being movable relative to the first support plate; and an actuation mechanism adapted to: move the second support plate against the first support plate, to adjust the trapway to operate in the constricted state, and move the second support plate away from the first support plate to adjust the trapway to operate in the dilated state, characterised in that the first support plate is fixedly positioned in the trap mechanism. move the second support plate against the first support plate, to adjust the trapway to operate in the constricted state, and move the second support plate away from the first support plate to adjust the trapway to operate in the dilated state, characterised in that the first support plate is fixedly positioned in the trap mechanism.