Hinged Expansion Joints have a single bellows and have their length restrained by the addition of hinge mechanism which is strong enough to accept the pressure generated thrust but will allow angular movement in a single plane. Slotted Hinge...
Hinged Bellows, either Axial or Universal type, are designed to absorb angular rotation in one plane only by the use of a pair of pins through hinge plates attached to the expansion bellows.Hinged Expansion Bellows should be used in sets of 2 or 3...