Unloaded expansion joints КМR

Unloaded expansion joints (CMR) — can be perceived as a combination of several types of movement so in one form. The design of the unloaded expansion joint is similar to the design of the axial and universal expansion joints, which consists of several bellows of different diameters, a set of transverse stability rods and limiters. It can include an external casing and an internal screen.

Unloaded expansion joints (CMR) can be manufactured and delivered to customers with various types of connecting fittings. Welding and flanged connections are standard. On request, this type of expansion joint can be completed with end parts according to the customer's drawing. KMR expansion joints are made of various steel grades: St. 3, St. 20, St. 09G2C, St. 12X18N10T, St. 10X17N13M2T, Incoloy 800, Incoloy 825, and others on request;

Technical characteristics of KMR expansion joints:

Diameter: from 100 mm to 4000 mm
Working pressure: from vacuum to 10 ATM*
Working environment temperature: -240 to 1200°C
The construction length is selected individually, taking into account the needs and wishes of the customer.

This type of expansion joint does not create spacer forces and thus unloads the pipeline from the action of internal pressure forces. They require the correct choice of locations in the pipeline system. Due to their design, KMR expansion joints significantly reduce the load on the fittings of pumps, tanks, heat exchange equipment and other pipeline elements. The amount of compensation is included in the design of the expansion joints based on the required data.

* expansion joints for higher working pressure can also be developed on request.