Single Line Isolation Latch Valves
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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
| 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 |
