MULTI-LAYER BELLOWS
Glavkosmos
Multi-layer bellows designed for use as sensing elements, phase separators, sealing devices, and power unit components in various atmospheres, particularly suitable for liquid rocket engine combustion systems.
Key figurescomparable across the catalogue
- Design life
- 6 years
- Lead time
- 2 months
Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.
As published by the supplier
- Purpose
- Intended for operation as sensing elements, phase separators, sealing devices as well as power unit components in atmospheres causing no material corrosion, at temperature of minus 260 to plus 550 °C. It is applicable to compensate for the axial, angular and transverse movements of the branches of the power plant circuits that occur in the combustion system of a liquid rocket engine.
- Year of release
- 2007
- Design life
- 6 years
- Lead time
- 2 months
- Flight qualification of the product
- No
- Possibility to adapt the product to customer requirements
- Yes
- Outside diameter
- 22-125 mm
- Number of corrugations
- 4-25
- Wall thickness
- 0.16-0.3 mm
- Number of layers
- 2-10
- Material grade according to gost r 55019-2012
- 08Kh18N10T, 12Kh18N10T, 10Kh17N13M2T, 10Kh17N13M3T
About
These multi-layer bellows are engineered for operation as sensing elements, phase separators, sealing devices, and components within power units. They are designed to function effectively in atmospheres that do not cause material corrosion, across a wide temperature range from minus 260 to plus 550 °С. A key application is to compensate for axial, angular, and transverse movements within the branches of power plant circuits, specifically those occurring in the combustion system of a liquid rocket engine. Manufactured from corrosion-resistant and fire-resistant steel grades such as 08Х18Н10Т or 12Х18Н10Т, these bellows ensure complete leak-tightness even at high pressures and temperatures. This is combined with excellent flexibility, a critical feature for hazardous industries. The product was first released in 2007 and comes with a guaranteed service life of 6 years. The estimated production and delivery time is 2 months. While there is no flight qualification stated, the product can be adapted to meet specific customer requirements.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.