Thorburn's Hing-Flex joints are typically used in sets of two or three, to absorb pipe movement in one or more directions in a single plane piping system. Each individual joint in the system is restricted to pure angular rotation by its hinges. However, each pair of hinged joints, separated by section of piping, will act together to absorb lateral deflection in much the same manner as Thorburn's Dual-Flex universal expansion joint in a single application.

Thorburn's Hing-Flex hinges are designed to restrain the full pressure thrust of the expansion joint and may be designed to support the weight of piping and equipment, and to absorb thermal loads, wind loads and other external forces. Thorburn Hing-Flex system permits large movements to be absorbed with minimal anchor forces.

Thorburn's two hinge system will absorb thermal expansion in one plane as the expansion joints are restricted to angular rotation only and cannot extend or compress. This system relies on the bending deflections of the long horizontal piping legs to absorb the growth in the offset leg.

• Eliminates pressure thrust forces

• Positive control over movement

• No main anchors required

• Low forces on piping system

• Prevents torsion on bellow