Expansion Joints
Positive locking bolted stainless steel couplings are suitable for drop pipes, stainless joints, and for all tube diffuser piping systems to restrict header pipe rotation.
For Disc and Tube Installations
Expansion Joints are available in a positive locking design or in flexible PVC with a stainless steel shell. SSI recommends the flexible expansion joints for disc installations and the positive locking type for tube diffuser projects.
Pictured at right is the universal traveling union expansion joint used to join plastic piping lengths together. These are header pipes in the aeration system (onto which either disc or tube diffusers are mounted).
Slotted Band
Slotted band joints with stainless steel shear rings are suitable for disc fine bubble and cap coarse bubble lateral plastic piping systems, in conjunction with SSI’s fixed and guide support stand system to manage thermal expansion and contraction.
Rigid Bolt Joint
SSI’s heavy duty expansion joint provides a double O-ring to prevent rotation, and allows limited longitudinal travel to absorb plastic pipe expansion and contraction.
