HARDWARE / PRODUCTUpdated 24 Jul 2026

WELDED STEEL DIAPHRAGM BELLOWS

Saransk Instrument-Making Plant
WELDED STEEL DIAPHRAGM BELLOWS

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.

Typed specifications2 values

Discloses 1 of 10 fields engineers filter by in this category (category median 3).

Design lifetime
6 years
product page
Lead time
2 months
product page

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As published by the supplier5 lines, in the manufacturer's own wording
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.

Source: trade.glavkosmos.com ↗

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