Page 52 - GarlockFluidSealing2010

B-20
Types of Expansion Joints
Single Arch
¦Fabric and rubber construction
¦Reinforced with metal/wire rings
¦Full-face fanges integral with joint body
¦Flanges drilled to companion bolt pattern
¦Gaskets not required
Taper or Reducer
¦Connects piping of different diameters
¦Concentric tapered joints: same axis for both ends
¦Eccentric: axis of one end offset from other end
Multiple Arch
¦ Accommodates greater movement than single arch
¦ Minimum joint length depends on number of arches
¦ Maximum of four arches recommended to maintain
lateral stability
Offset
¦Compensates for initial misalignment and non-paral-
lelism of piping axis
¦Custom-built to your specifcations
¦Complete drawings and specifcations recommend-
ed with inquiries/orders
Sleeve
¦ Same as single arch type, except sleeve end I.D.
equals pipe O.D.
¦ Slips over straight ends of open pipe
¦ Ends secured by suitable clamps
¦ Recommended for low pressure service only
¦ Tapers in excess of 15° are not recommended
¦ Pressure ratings are based on larger I.D.
¦ Available with or without arches
Concentric Taper Eccentric Taper