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ECLSS High Pressure Flow Control and Isolation Valves



Moog produces a variety of fluid control components used in human space vehicles as part of their environmental control and life support systems (ECLSS). The components include mechanical pressure regulators, manual and electrically actuated valves, and passive components such as quick disconnects. These components are used in high- and low-pressure gas control systems, as well as liquid fluid control for thermal management.

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Key Features

  • High pressure O2 and N2 at 4500 psi, with mass flow rates of 0.02 lbm/sec (O2 and N2)

 

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 

valve, pressure gauge, fill valve

Two stage with relief valveBLDC motor-driven isolation valvePassive and active halves
MediaOxygen and NitrogenOxygen and NitrogenOxygen and NitrogenOxygen and Nitrogen
Unit Mass8.8 lbm12.0 lbm4.5 lbm5.9 lbm
Dimensions (L W H) 7.3” x 5.9” x 6.8”9.5” x 3.9” x 5.9” 10” x 4” x 2” 5.7” x 2.5” x 2.5”
MEOP4500 psia4500 psia4500 psia4500 psia
MDP4500 psia4500 psia4500 psia4500 psia
Pressure Range, Inlet0 – 4500 psia250 – 4500 psia0 – 4500 psia0 – 4500 psia
Regulated Pressure, OutletN/A100 ± 10 psiaN/AN/A
Lockup PressureN/A115 psiaN/AN/A
Factors of Safety

Proof: 1.5x MEOP; 

Burst: 2.5x MEOP

Proof: 1.5x MEOP; 

Burst: 2.5x MEOP

Proof: 1.5x MEOP; 

Burst: 2.5x MEOP

Proof: 1.5x MEOP; 

Burst: 2.5x MEOP

Maximum Pressure Drop

100 psid 

(@ max temp, max flowrate)

N/A10 psid max @ 1 ACFM N2

54 psid 

(@ max. temp, max. flowrate)

Maximum Flowrate

0.0184 lbm/sec N2; 

0.009 lbm/sec O2

0.0184 lbm/sec N2; 

0.0184 lbm/sec O2

0.0184 lbm/sec N2; 

0.011 lbm/sec O2

0.0184 lbm/sec N2; 

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/secN/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) -40°F – 160°F-40°F – 160°F-40°F – 180°F-11°F – 160°F
Random Vibration22 Grms22 Grms40 Grms22 Grms
Shock2880 G2880 G3500 G2880 G
Cycle Life50 cycles

13000 cycles (outlet); 

500 cycles (inlet)

1200 cycles100 cycles (mate-demate)
Wetted MaterialsMonel, Inconel, VespelMonel, Inconel, Brass, BeCu, VespelMonel, Inconel, VespelMonel, CRES, Vespel
Filtration25 micron absolute55 micron absolute25 micron absoluteN/A
Operating VoltageN/AN/A28 VDC nominalN/A
Current DrawN/AN/A

0.45 Amp min, 

controller limited

N/A

Resources

Related Products

Low Pressure Flow Control and Isolation Valves