Bipropellant Torque Motor Thruster Valves

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Moog Torque Motor thruster valves have been in production for almost four decades. T/M thruster valves were originally developed for the original Galileo spacecraft and for Minuteman II and III engines. The T/M thruster valve has a normally closed configuration. Redundant upstream valves can have a thruster or latch valve configuration.

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Features

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Key Advantages

Precise control of both fuel and oxidizer
Minimum dribble volume
All welded design to prevent external leakage
PTFE seal and stainless steel construction
Normally closed valve state
Microswitch or HED position indication available for latch valves

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101-126-1-Chemical-Thruster-Valves-grey-bckgrd-700x400.psd

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Characteristic	2.5lbf (10 N) Thrust	5 lbf (22 N) Thrust Redundant Seat	15 lbf (66 N) Thrust Redundant Seat	100 lbf (445 N) Thrust Single Seat
Max Operating Pressure, MEOP [psia (bar)]	319 (22)	319 (22)	425 (29.3	285 (197)
Proof Pressure [psia (bar)]	479(33)	1102 (76)	750 (51.7)	552 (30.1)
Burst Pressure [psia (bar)]	1,276 (88)	1,870 (129)	2,000 (138)	1,500 (89)
Flow Coefficient (GPM water/(ΔP)^0.5)	0.00023	0.00042	0.0012	0.0060
Operating Voltage Range [Vdc]	25 to 43	25 to 43	24 to 33	21 to 35.5
Open Response Time [msec	2.3 to 2.9	1.8 to 2.4	9 max	30 max
Close Response Time [msec]	2 max	2 max	4 max	30 max
Power Consumption [watts]	8.2 at 51.5 Vdc & 70F	8 at 43 Vdc & 70F	23 at 33 Vdc & 70F	19 at 35.5 Vdc & 70F
Leakage per Seat, Internal [scc/hr]	1.8	1	5	5
Leakage, External [scc/s]	1E-6	1E-6	1E-5	1E-4
Cycle Life [cycles]	1,000,000	1,000,000	100,000	10,000
Weight [lbm (gram)]	0.52 (235)	1.2 (550)	1.9 (860)	2.0 (910)
Inlet Filtration, [micron absolute rating]	40	40	50	35
Operating Temperature Range [ºF (ºC)]	32 to 140 (0 to 60)	14 to 302 (-10 to 150)	20 to 140 (-10 to 60)	50 to 122 (10 to 50)
Representative Model Numbers	-051-215A -051-131C	-051-338	52-189	53-177 53-163