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Spiroflex d.o.o.
Ljudevita Gaja 7
35 208 Ruščica
Croatia

 

Phone: +385 35 _212420
Telefax: +385 35 _457105
e-mail: info@spiroflex.hr

 

The pressure balanced expansion joints

General

They are designed with several bellows where the effective area of the balancing bellows is twice that of the line bellows. The pressure thrust forces cancel acting across the tie rods attached to the tie flanges. The anchors are only loaded by the displacement forces in expansion joints.

Axial in-line pressure balanced expansion joint

These expansion joints can accept full axial movements without loading the anchors with the pressure thrust.

Axial in-line pressure balanced expansion joint

Axial in-line pressure balanced expansion joint

 
Pressure balanced assembly in typical installation between two types of load sensitive equipment, requiring very low forces and moments on flanges

Pressure balanced assembly in typical installation between two types of load sensitive equipment, requiring very low forces and moments on flanges

Pressure balanced axial expansion joints with elbow

This type of bellows can be used at the change of direction of pipe. Elbow pressure balanced assembly is designed to accept axial and lateral movements of piping systems. Furthermore it absorbs pressure thrust and cancels acting across the tie rods attached to the tie flanges. Pressure balanced axial expansion joints are usually used as connection on flanges of turbines, pumps or compressors where minimum forces and moments are required.

Pressure balanced axial expansion joint with elbow

Pressure balanced axial expansion joint with elbow

 
Pressure balanced axial expansion joint with elbow

Pressure balanced axial expansion joint with elbow

Pressure balanced axial expansion joint with elbow

Pressure balanced axial expansion joint with elbow

 
Universal pressure balanced expansion joint with elbow at turbine pipeline

Universal pressure balanced expansion joint with elbow at turbine pipeline

Pressure balanced universal expansion joint

Pressure balanced universal expansion joint