Dual Line Isolation Valves CHEMICAL PROPULSION_

CHEMICAL
PROPULSION_
Dual Line Isolation Valves
Moog torque motor valves have been in production for almost four decades. Torque motor valves were developed for
Galileo, LEASAT, INSAT, and Minuteman. The latch valve is bi-stable, and will stay in the last (open/closed) commanded
position. The valves can be used for controlling two separate propellants or pressurization gas lines. This valve utilizes
a single torque motor to isolate fluids in two hermetically separate lines.
Key Advantages
• All welded design to prevent external leakage
• PTFE seal and stainless steel construction
• Direct microswitch position indication
• Transition tubes available for stainless to titanium
© Astrium
© Air Force Space Command
© ESA
Dual
Line Line
Isolation
Valves
Dual
Isolation
Valves
Performance Characteristics
Characteristic
¼ inch line, Torque Motor, Stainless Steel
Max Operating Pressure, MEOP [psia(bar)]
298 (20.5)
Proof Pressure [psia(bar)]
685 (47.2)
Burst Pressure [psia(bar)]
1600 (110)
Flow Coefficient (GPM water/psid^0.5)
0.0024
Operating Voltage Range [Vdc]
18 to 42.5
Response Time [msec]
20
Power Consumption [watts]
68 at 42.5 Vdc, 70F
Leakage per Seat, Internal [scc/hr GHe]
1
Leakage, External [scc/s GHe]
1E-6
Cycle Life [cycles]
5,000
Weight [lbm (kg)]
1.32 (0.6)
Inlet Filtration [micron absolute rating]
none
Operating Temperature Range[ºF (ºC)]
14 to 131 (-10 to 55)
Representative Model Numbers
-051-235
500 Jamison Road Plant 20, East Aurora, NY 14052 USA
www.moog.com/space
© 2 0 13 Mo o g, Inc. All rig hts reser ved.
Form 500-942 0913