Abstract: A connector includes a seat portion and a body portion. The seat portion includes a seat having a first curved surface. The body portion includes a curved body having a second curved surface. A nut portion is screwed to the seat portion, with a flexible portion and washer disposed therebetween. To connect the seat portion and the body portion, the curved body can be inserted through an opening of the nut portion, and the flexible portion and washer. The flexible portion may resist, but not stop, the curved body from being moved therethrough. The curved body may be seated within the seat and configured such that angular and/or rotational adaptation of the seat portion relative to the body portion is permitted. The nut portion can be adjusted to compress the flexible portion such that the curved body is retained in the vicinity of the seat, while still permitting angular and/or rotational adaptation of the seat portion relative to the body portion.

Abstract: A non-return device (10) for use with a waste trap is described. The non-return device comprises a sealing portion (12) having first and second sheet members (14, 16), a device inlet (18), a device outlet (20) and a transition portion (22) providing fluid communication between the device inlet and the sealing portion. The transition portion has a convex section of wall (24).

Abstract: A trap for a waste outlet for use in drainage facilities is described which provides a water seal. The trap comprises a one-way valve (23) at the trap inlet (14) and a pressure one-way valve (24) at the trap outlet (16) such that, in addition to prevent ingress of animals from the soil pipe to the buildings, prevents ingress of odours and the water seal being presence of a negative pressure differential across the outlet one-way pressure valve that air can pass through the pressure valve (24) to relieve the pressure differential but in the event of a positive pressure differential, air is prevented from passing through the oneway pressure valve (24).

Abstract: A fitting (10) for a sanitary unit outlet (5) has a tubular housing (12) having an inlet (14) and an outlet (16), a grid (18) associated with the housing inlet (14) and a one-way valve (20) associated with the housing outlet (16). The housing (12), grid (18) and one-way valve (20) are configured so as to be removable from the sanitary unit outlet (5) as a single entity to permit, for example, the one-way valve (20) to be replaced.

Abstract: A non-return device (10) for use with a waste trap is described. The non-return device comprises a sealing portion (12) having first and second sheet members (14, 16), a device inlet (18), a device outlet (20) and a transition portion (22) providing fluid communication between the device inlet and the sealing portion. The transition portion has a convex section of wall (24).

Abstract: A plumbing sealing arrangement (10) comprises a passageway having an inlet (14) adapted to be connected to a waste outlet (16) and an outlet adapted to be connected to a soil stack, a one way valve (18) located between the passageway inlet and outlet, the one way valve adapted to permit the passage of fluid through the passageway in one direction only from the inlet to the outlet and a trap (20) arranged to permit a liquid seal to be formed between the passageway inlet and the passageway outlet. In normal use, at least a portion of the one way valve is immersed in the liquid seal and in a described embodiment, an outlet of the valve is immersed in the liquid seal.