Request for Proposal
Procurement of Solenoid Valves for High Pressure Cryogenic Fluids
2021. 04. 22.
Future Launcher R&D Program Office
Korea Aerospace Research Institute
KARI proprietary : The data/information contained in this document shall not be disclosed, disseminated or
reproduced, in whole or in part, without the express prior written approval of KARI.
Technical Specifications
1. Introduction
The Solenoid valves are required for in space propulsion system and test facilities that use the
cryogenic fluid (liquid oxygen, liquid methane and their vapors)
Due to the space application the solenoid valvexs should offer fast and safe switching, high-
reliability, long service life, good medim compatibility of the materials used and compact design
in high pressure and cryogenic conditions.
KARI will procure Solenoid valves which satisfy the following technical specifications.
2. Solenoid valves specification
2.1 Overall requirements
Solenoid valvs should satisfy the following technical requirements:
Item 1 : 2-way cryo solenoid valve
Type : Normally closed, 2-pos, 2-way, direction action
Working medium (WM) : LOX, liquid methane, and their vapors.
Opening pressure range : 0 ~ 4.9 MPa
Max WM pressure : 19.6 MPa
Control signal : DC
Voltage : 28 ± 4 Vdc
Passang diamter : 4 ± 0.5 mm
Max response time (at air test) : 0.08 ± 0.01 sec
Overall dimensions : 120 × 90 × 60
Mass : no more than 1.3 kg
Item 1 : 2-way cryo solenoid valve
Type : Normally closed, 2-pos, 2-way, Piloted action
Working medium (WM) : LOX, liquid methane, and their vapors.
Opening pressure range : 2 ~ 19.6 MPa
Control signal : DC
Voltage : 28 ± 4 Vdc
Passang diamter : 12 ± 0.5 mm
Max response time (at air test) : 0.25 ± 0.02 sec
KARI proprietary : The data/information contained in this document shall not be disclosed, disseminated or
reproduced, in whole or in part, without the express prior written approval of KARI.
Overall dimensions : 165 × 115 × 60
Mass : no more than 2.2 kg
2.2 Specific requirements
The valves should be 100 % proven at the test that will conducted in the conditions
conforming to the technical requiements.
The valves should be developed, manufactured and qualified by the space standards.
The valves should have the heritage of space application.
The valves should pass the acceptance test can be considered as an space grade valves.
The contractor must have experience in manufacturing and usint the valves in space
application.
KARI proprietary : The data/information contained in this document shall not be disclosed, disseminated or
reproduced, in whole or in part, without the express prior written approval of KARI.
