Abstract: A coupling for attaching to an end of a tube, pipe, conduit or other round solid or hollow section. The coupling includes an inner body and a collar to be provided around the inner body. The inner body has an interior bore passing through at least a portion thereof to receive a tube and the bore has one or more interior annular protuberances extending into the bore. When the collar is provided around the inner body it applies a circumferential compressive force to deform the inner body such that the one or more annular protuberances engage the tube to seal with it.

Abstract: A valve assembly (1) controls the flow through a fluid pathway. The valve assembly (1) comprises a valve body (2) having a bore, and a spindle (20) received within the bore which is actuatable to open and close the valve. The spindle (20) has an axially upstream end arranged towards the fluid pathway and an opposing downstream end. A first seal (50) is provided about the spindle between the spindle and the bore and a biasing element (64) is arranged to impart an axial compressive force to the sealing element (50). The biasing element (64) is located within the valve body (2) between the spindle (20) and the bore on the downstream side of the seal to enables a more direct compressive force to be applied to the seal to improve sealing efficiency.

Abstract: A valve assembly (1) controls the flow through a fluid pathway. The valve assembly (1) comprises a valve body (2) having a bore, and a spindle (20) received within the bore which is actuatable to open and close the valve. The spindle (20) has an axially upstream end arranged towards the fluid pathway and an opposing downstream end. A first seal (50) is provided about the spindle between the spindle and the bore and a biasing element (64) is arranged to impart an axial compressive force to the sealing element (50). The biasing element (64) is located within the valve body (2) between the spindle (20) and the bore on the downstream side of the seal to enables a more direct compressive force to be applied to the seal to improve sealing efficiency.

Abstract: A coupling for attaching to an end of a tube, pipe, conduit or other round solid or hollow section. The coupling includes an inner body and a collar to be provided around the inner body. The inner body has an interior bore passing through at least a portion thereof to receive a tube and the bore has one or more interior annular protuberances extending into the bore. When the collar is provided around the inner body it applies a circumferential compressive force to deform the inner body such that the one or more annular protuberances engage the tube to seal with it.