Latching Valve with Reverse Pressure Relief Function
| Registration date | 3/18/2008 |
|---|---|
| JAXA development group | Research Unit II, Research and Development Directorate |
| View diagram | See Attachment 1 |
| Environmental resistance | See Attachment 2 |
| Patent number (publication number) |
N/A |
| Reference | N/A |
| Satellite and launch date | To be supplied after launch |
| Note | N/A |
Manufacturer
Moog Japan Ltd.
Hiratsuka-shi, Kanagawa, Japan
https://www.moog.co.jp/
Features
- The reverse pressure relief function* is newly added to JAXA common part N1045/101, a domestic latching valve.
- The addition of the function was achieved with minimum design changes by inheriting existing design, manufacturing and test methods to the extent possible.
* The reverse pressure relief function is to expel pressure to the upper stream when the down stream pressure increases. This function is to prevent over pressure due to enclosed liquid in the pipe while the latching valve is closed.
Applications
The valve is placed in the middle of the supply line connecting the propellant tank and the thruster valve, and used for cutting off propellant supply, switching the main and redundant supply lines of a satellite propulsion subsystem, etc.
Specifications
| Property | Specification |
|---|---|
| Type | Torque motor type |
| Operating pressure | 0 to 2.76 MpaG (gauge pressure) |
| Proof / Burst pressure | 6.47 MpaG / 10.98 MpaG |
| Reverse pressure relief value | 1.38 +1.2 -0.8 MpaD (differential pressure) |
| Internal leakage | ≦5 scch @0.049 to 2.76 MPaG/GHe |
| External leakage | ≦1 x 10-6 sccs @0 to 2.76 MPaG/GHe |
| Operating voltage | 21 to 32 Vdc |
| Response time | ≦50 ms |
| Operating temperature | 5 to 60 °C |
| Cycle life | 1000 cycles |
| Power consumption | ≦15.5 W |
| Weight | ≦0.45 kg |
