Bellows expansion joint

КСО.F

Bellows axial flange expansion joint

Axial expansion joint with flange connection — for quick installation and maintenance without welding on the pipeline.

Nominal diameter DN
50–1400 mm
Nominal pressure PN
up to 25 kgf/cm²
Temperature
up to +450 °C
Bellows axial flange expansion joint КСО.F

Applications

District heating networks
Steam lines
Process pipelines
Hot and cold water systems
Boiler houses and heating substations
Oil and gas facilities

Specifications

TypeAxial, flanged connection
Movements absorbedaxial (compression/stretching)
Nominal diameter, DN50–1400 mm (up to 3000 mm to order)
Working pressure, PNup to 25 kgf/cm²; higher to order
Medium temperatureup to +450 °C
Working mediumwater, steam, gas, petroleum products and other non-aggressive media
Bellows materialcorrosion-resistant steel 12Kh18N10T
Connectionflanges according to ГОСТ (welded or pivoted)
Manufacturingto project parameters (DN, PN, travel)

Exact compensating capacity and face-to-face length depend on the size and are determined during selection from the completed questionnaire.

Size range

DN 50DN 65DN 80DN 100DN 125DN 150DN 200DN 250DN 300DN 350DN 400DN 500DN 600DN 700DN 800DN 1000DN 1200DN 1400

Other diameters and versions are manufactured to order.

Description

Bellows axial flange expansion joint (КСО.F) is a type of axial expansion joint with a flange connection to the pipeline. It perceives temperature elongations due to compression and stretching of the bellows.

The flange design simplifies installation and disassembly: the expansion joint is bolted without welding in place, which is convenient for maintenance and replacement. The flanges are welded or pivoted, according to ГОСТ.

OnePROM produces КСО.F for the parameters of the object: diameter, pressure, medium temperature and required axial stroke. We carry out the selection, calculation and delivery. Please send us a questionnaire for selection.

How we work

Selection

We receive the questionnaire or specification and select the type and parameters.

Calculation and quotation

We calculate the compensating capacity and prepare a quotation.

Manufacturing

We manufacture the expansion joint to project parameters under quality control.

Delivery and installation

We ship to site and, where required, provide installation, installation supervision and commissioning.

Frequently asked questions

What is КСО.F and where is it applied?

Axial expansion joint with flange connection — for quick installation and maintenance without welding on the pipeline. Used in: heating networks and heat supply, steam pipelines, process pipelines, hot water and HVAC systems, boiler houses and central heating plants, oil and gas facilities.

What diameters, pressure, and temperature does КСО.F allow?

КСО.The product is manufactured according to the parameters of the object: nominal diameter 50-1400 mm (up to 3000 mm on request); working pressure up to 25 kgf/cm2; higher on request; temperature up to +450 °C; working medium — water, steam, gas, petroleum products and other non-aggressive media.

How do I order КСО.F?

Complete the data sheet on the site or request a quote — we will select the size for your parameters (DN, PN, working travel, medium). Made to order, delivered across Russia and the CIS.

Let's select КСО.F for your object

Send a data sheet or specification — we will prepare a calculation and a quotation.

Request a quote