WELDED STEEL DIAPHRAGM BELLOWS
Glavkosmos
A welded steel diaphragm bellows designed for use in propellant overflow systems for in-orbit refueling of spacecraft and as an integral part of launch vehicle fuel 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
- Year of release
- 2012
- Design life
- 6 years
- Lead time
- 2 months
- Flight qualification of the product
- No
- Possibility to adapt the product to customer requirements
- Yes
About
The Welded Steel Diaphragm Bellows are unique products composed of annular diaphragms with a specific pattern, connected in series by welding on both the outside and inside diameters. Their primary purpose is to extend the service life of bellows-type pipeline valves by enhancing the cyclic strength of the bellows unit. This is achieved through a more even distribution of deformation load on a shaped corrugation, which also results in lower rigidity compared to traditional bellows. These bellows are specifically designed for use in propellant overflow systems that manage liquid and gas separation for refueling spacecraft in orbit. Furthermore, they are an integral component of launch vehicle fuel systems and are engineered to withstand hydraulic shock loads experienced during the propulsion system’s startup. The product was released in 2012 and offers a guaranteed service life of 6 years. Production and delivery are estimated to take 2 months, and the product can be adapted to meet specific customer requirements.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.