Ocelflex Industries products

Single Axial Expansion Joints consists of a single circular metallic bellow welded to end connections. The expansion bellow can absorb all three movements – axial, lateral and angular. Since it is capable of carrying all the three movements, it is necessary that the piping be controlled/guided as to the direction of movements required by the applications.

Universal Expansion Joints consists of two bellow elements placed longitudinally over each connected through a center spool piece. The angular movement produced by each individual bellow results in lateral movement of the whole Universal Expansion Joint. Universal expansion joints are capable of absorbing significant amount of lateral movement along with considerable amounts of axial and angular movement.

Hinged metal expansion joints are capable of significant angular movement. The angular movement is provided by use of metal hinges. The hinge mechanism is typically designed to accept full pressure thrust.

Rubber expansion joint with a single arch design are suitable for absorbing movements for smaller lengths. The bellows are moulded under high pressure and reinforced with nylon thread. Ocelflex manufactures rubber expansion joints built to withstand even the most rigorous piping system configurations.

Rubber expansion joint with a double arch design are suitable for absorbing movements for longer lengths. The bellows are moulded under high pressure and reinforced with nylon thread. Double Arch Rubber Expansion Joint is allows for greater axial compression or axial extension, and lateral deflection as well as angular movement.

Fixed Flange Material: Stainless Steel, Carbon Steel, Brass.

A Gimbal Angular Expansion Joint is more flexible than a Hinged Angular Expansion Joint as it is capable of movement in multiple angular rotation planes. It contains two sets of hinges, the axis of each set perpendicular to the other, allowing angular deflection in multiple planes. Gimbal Joints are used in sets of two or threes, as the arrangement can provide greater lateral and angular deflection. For few applications Gimbal Expansion Joints are also combined with Hinged Expansion Joints for a more economical solution.

Rectangular Expansion Joints, like circular expansion joints can absorb all three movements - axial, lateral and angular. As these are installed in pipe systems with rectangular ducts having no particular design standard, Rectangular Expansion Joints are customised for specific applications to provide the most economic design. Rectangular expansion Joints are manufactured without any size limit.

Optional Stainless Steel Covers or Inner Sleeve ( Inner Liners ) are available on request. It is recommended to use inner sleeve in applications where there are high frequency vibrations caused by the inner media flow or where the inner media is corrosive enough to damage the inner thin wall of the metal expansion bellow. Additionally it minimizes the pressure drop throughout the expansion joint. For expansion Joints with inner sleeves, it is necessary to consider the movement restriction when designing the expansion joint.

Expansion joints are made of relatively thin walled sheet metal. As the bellows element is thin, an outer cover should be used to protect it from damage during plant construction and maintenance activities. An outer cover protects the bellow element from weld splatter, falling tools and parts, damage from closeby accidents. For expansion Joints with outer cover, it is necessary to consider the movement restriction when designing the expansion joint.