ECLSS High Pressure Flow Control and Isolation Valves
Key Features
- High pressure O2 and N2 at 4500 psi, with mass flow rates of 0.02 lbm/sec (O2 and N2)
Electrically-actuated valves are 28 VDC devices that use brushless DC motors and听solenoids to drive the units open or closed, and include normally-open / normallyclosed and latching designs.
听
| Valve | Model 50-1472 Tank Valve Assembly |
Model 50-1480 Pressure Regulator |
Model 50-1473 Isolation Valve |
Model 50-1475 / 50-1478 Quick Disconnect |
| Description | Dual manual latch valves, relief听 valve, pressure gauge, fill valve |
Two stage with relief valve | BLDC motor-driven isolation valve | Passive and active halves |
| Media | Oxygen and Nitrogen | Oxygen and Nitrogen | Oxygen and Nitrogen | Oxygen and Nitrogen |
| Unit Mass | 8.8 lbm | 12.0 lbm | 4.5 lbm | 5.9 lbm |
| Dimensions (L W H)听 | 7.3鈥� x 5.9鈥� x 6.8鈥� | 9.5鈥� x 3.9鈥� x 5.9鈥澨� | 10鈥� x 4鈥� x 2鈥澨� | 5.7鈥� x 2.5鈥� x 2.5鈥� |
| MEOP | 4500 psia | 4500 psia | 4500 psia | 4500 psia |
| MDP | 4500 psia | 4500 psia | 4500 psia | 4500 psia |
| Pressure Range, Inlet | 0 鈥� 4500 psia | 250 鈥� 4500 psia | 0 鈥� 4500 psia | 0 鈥� 4500 psia |
| Regulated Pressure, Outlet | N/A | 100 卤 10 psia | N/A | N/A |
| Lockup Pressure | N/A | 115 psia | N/A | N/A |
| Factors of Safety | Proof: 1.5x MEOP;听 Burst: 2.5x MEOP |
Proof: 1.5x MEOP;听 Burst: 2.5x MEOP |
Proof: 1.5x MEOP;听 Burst: 2.5x MEOP |
Proof: 1.5x MEOP;听 Burst: 2.5x MEOP |
| Maximum Pressure Drop | 100 psid听 (@ max temp, max flowrate) |
N/A | 10 psid max @ 1 ACFM N2 | 54 psid听 (@ max. temp, max. flowrate) |
| Maximum Flowrate | 0.0184 lbm/sec N2;听 0.009 lbm/sec O2 |
0.0184 lbm/sec N2;听 0.0184 lbm/sec O2 |
0.0184 lbm/sec N2;听 0.011 lbm/sec O2 |
0.0184 lbm/sec N2;听 0.009 lbm/sec O2 |
| Leakage Internal (@ MDP, GHe) | < 1 x 10-3 scc/sec | < 1 x 10-3 scc/sec | < 1 x 10-3 scc/sec | N/A |
| Leakage External (@ MDP, GHe) | < 1 x 10-3 scc/sec | < 1 x 10-3 scc/sec | < 1 x 10-3 scc/sec | < 1 x 10-3 scc/sec |
| Temperature (Operating)听 | -40掳F 鈥� 160掳F | -40掳F 鈥� 160掳F | -40掳F 鈥� 180掳F | -11掳F 鈥� 160掳F |
| Random Vibration | 22 Grms | 22 Grms | 40 Grms | 22 Grms |
| Shock | 2880 G | 2880 G | 3500 G | 2880 G |
| Cycle Life | 50 cycles | 13000 cycles (outlet);听 500 cycles (inlet) |
1200 cycles | 100 cycles (mate-demate) |
| Wetted Materials | Monel, Inconel, Vespel | Monel, Inconel, Brass, BeCu, Vespel | Monel, Inconel, Vespel | Monel, CRES, Vespel |
| Filtration | 25 micron absolute | 55 micron absolute | 25 micron absolute | N/A |
| Operating Voltage | N/A | N/A | 28 VDC nominal | N/A |
| Current Draw | N/A | N/A | 0.45 Amp min,听 controller limited |
N/A |
