Rubber expansion joint with Tie rod

Control units can be designed as limit rods or tie rods depending on the application. Their designs are based on the calculated thrust force of the rubber expansion joint at the specified pressure and can be attached to the external or internal hardware of the expansion joint. The arrangement can also include a combination of rubber grommets, flat or spherical washers, as well as internal limits for specific applications.

Limit Rods ae conrtrol units designed with a gap to allow the rubber expansion joint's movement range (axial, angular, lateral, and torsional) during normal operation. In the event of main anchor failure, the limits rods will engage and function as a secondary restraint. This will prevent the rubber expansion joints from over-extension or over-compression, by restraining the full pressure thrust loads. 

Protects expansion joints by restraining pressure thrust forces

High tensile galvanized steel rods standard, stainless steel and other materials available

Galvanized gusset plates standard, stainless steel and other materials available

Rubber grommets isolate vibration and are standard on sizes 1" to 12" diameter

Internal nuts or compression sleeves to prevent over-compression are available

Spherical washers prevent binding while minimizing lateral forces

Double nuts are used to lock limit points and allow for field adjustment

Custom restraints available including universal, hinge and gimbal arrangements