Single Line Isolation Latch Valves

101-118-1-SINGLE-LINE-ISOLATION-LATCH-VALVES-grey-bckgrd-700x400.psd


Moog latch valves have been in production for more than four decades. The valves were originally developed for Galileo, LEASAT, INSAT, and Minuteman. The valves can be used for controlling propellants and pressurization gasses. The latch valves are bi-stable, and will stay in the last (open/closed) commanded position. 

 

 

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Key Features

  • All welded design to prevent external leakage
  • PTFE Seal and stainless steel or titanium construction
  • Direct microswitch position indication
  • Transition tubes available for stainless to titanium and titanium to stainless steel
  • Inlet filter available for most configurations 
101-118-1-SINGLE-LINE-ISOLATION-LATCH-VALVES-grey-bckgrd-700x400.psd
101-119-1-SINGLE-LINE-ISOLATION-LATCH-VALVES-grey-bckgrd-700x400.psd
101-120-1-SINGLE-LINE-ISOLATION-LATCH-VALVES-grey-bckgrd-700x400.psd
101-121-1-SINGLE-LINE-ISOLATION-LATCH-VALVES-grey-bckgrd-700x400.psd
Valve

1/4 inch line, Torque Motor,

Stainless Steel

3/8 inch line, Torque Motor,

Stainless Steel

3/8 inch line, Torque Motor,

Titanium

1/2 to 3/4 inch line, Linear Force Motor,

Stainless Steel

Max Operating Pressure, MEOP [psia(bar)]  420 (28.9) 260 (17.9) 350 (24.1) 400 (27.5) 
Proof Pressure [psia(bar)] 1155 (79.6)  600 (41.4) 500 (34.4) 900 (75.8)
 Burst Pressure [psia(bar)] 2500 (172) 1600 (110) 2500 (172) 2000 (138) 
Back Pressure Relief (BPR) [psid]  50-350

25 to 250 annular,

40 to 200 simple

25 to 200 annular,

250 to 550 simple

50 to 90
Max Delta P [H20] 4 psid at 0.01 lbm/s

3.5 psid at 0.175 lbm/s annular,

6 psid at 0.11 lbm/s simple 

5 psid at 0.19 lbm/s annular,

19 psid at 0.1 lbm/s simple

11.2 psid at 0.71 lbm/s
Operating Voltage Range [Vdc]  22 to 34 18 to 51.5  24 to 34 24 to 32
Max Response Time [msec] 50 50 50 50
 Power Consumption [watts] 20 at 28 Vdc, 70F 26 at 28 Vdc, 70F 14 at 34 Vdc, 70F  62 at 32 Vdc, 70F
Leakage, Internal [scc/hr GHe] 1 5 5 5
 Leakage, External [scc/s GHe] 1E-6 1E-6 1E-6 1E-6
 Cycle Life [cycles] 50,000 5,000 20,000 3,000
Mass [lbm (kg)]  0.72 (0.32)  1.54 (0.690)  1.76 (0.730) 4.3 (2.0)
 Inlet Filtration [micron absolute rating] 40 None 40 40
Operating Temperature Range [ºF (ºC)] -29 to 160 (-34 to 71) 14 to 150 (-10 to 66) -29 to 160 (-34 to 71) 0 to 140 (-18 to 60)
Representative Model Numbers  51-181, 51-401, 51-420 52-265, 52-220  52E252, 52-316 53-189, 53-334