Overview
AT Series pumps were the world’s first metal-free Teflon® PTFE and PFA pumps capable of distributing chemicals at up to 210°C (410°F) in constant or thermal cycling applications. The pumps perform safely and reliably running continuously throughout their one-year warranty. They offer air supply pressures up to 4 Bar (60 psi). The pumps are available in three models, AT50, AT100 and AT300HD, which are capable of maximum flow rates of 20, 40 and 110 lpm, respectively.
While White Knight continues to offer and support AT Series pumps, we recommend users consider PSU Series pumps, which provide better performance, increased flow rates, higher pressure capabilities, improved reliability, extended pump life and warranty periods, as well as shorter lead times. See AT-to-PSU comparisons below.
Features & Benefits
- Metal-free Teflon® PTFE and PFA liquid path
- Leak-proof, machined design
- Teflon® PTFE heads with Synchro-Thread™
- No elastomer O-rings, no leaks, never retorque
- No lubrication in shift mechanisms
- No electric motors, which generate heat
- Pneumatic Logic™ minimizes pulsation and vibration
- Various liquid connection options
- Safe, leak-free operation due to no-metal design
- Ceramic in air shuttle valve
- Minimal parts for durable design
- Class 100 cleanroom assembly, testing, and packaging
- Easy to install and service
- Proven reliable to 200 million+ cycles
- No preventative maintenance during one-year warranty
Operation
AT Series pumps feature White Knight’s Pneumatic Logic™, a detent-free shuttle valve design that improves performance and reliability by minimizing vibration, pulsation and wear.
Need fiber optics or proximity sensors?
PFU Series pumps are controlled with fiber optic sensors.
PXU Series pumps are controlled with proximity switches.
Supply Air
Exhaust Air
Ambient Air
Liquid Suction
Liquid Discharge
Performance & Dimensions
AT50 Performance
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AT100 Performance
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AT300HD Performance
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PSU030 Performance
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PSU060 Performance
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PSU140 Performance
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Specifications
Model |
AT50 |
AT100 |
AT300HD |
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|---|---|---|---|---|---|---|
| Max Flow Rate* | 20 lpm 5 gpm |
40 lpm 10 gpm |
110 lpm 30 gpm |
26.2 lpm 6.92 gpm |
62.2 lpm 16.43 gpm |
123 lpm 32.5 gpm |
| Size of Air Connection | 1/4 in FNPT |
1/4 in FNPT |
3/8 in FNPT |
1/4 in FNPT |
1/4 in FNPT |
3/8 in FNPT |
| Displacement Per Cycle* | 0.056 liters 0.015 gal |
0.151 liters 0.040 gal |
0.606 liters 0.16 gal |
0.074 liters 0.019 gal |
0.178 liters 0.047 gal |
0.50 liters 0.132 gal |
| Cycles Per Minute* | ≤ 400 |
≤ 275 |
≤ 175 |
≤ 333 |
≤ 348 |
≤ 273 |
| Weight | 5.8 kg 12.9 lb |
13.0 kg 28.6 lb |
28.3 kg 62.4 lb |
6.4 kg 14.1 lb |
15.2 kg 33.4 lb |
22.7 kg 50.0 lb |
| Suction Lift* | 1 m (3 ft) |
1 m (3 ft) |
1 m (3 ft) |
1 m (3 ft) |
1 m (3 ft) |
1 m (3 ft) |
| Sound Pressure** | 70.36 dB(a) 74.91 dB(a) |
72.38 dB(a) 79.12 dB(a) |
74.80 dB(a) 82.31 dB(a) |
74.00 dB(a) 79.90 dB(a) |
73.11 dB(a) 82.50 dB(a) |
81.98 dB(a) 91.60 dB(a) |
| Sound Power** | 59.79 dB(a) 64.91 dB(a) |
64.31 dB(a) 71.98 dB(a) |
69.24 dB(a) 77.17 dB(a) |
63.01 dB(a) 69.90 dB(a) |
64.29 dB(a) 74.11 dB(a) |
76.37 dB(a) 83.16 dB(a) |
| Max Pressure | 4 Bar (60 psi) |
7 Bar (100 psi) |
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| Max Temperature | 210°C (410°F) |
210°C (410°F) |
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| Fluid Path Materials | PTFE / PFA |
PTFE / PFA |
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| Non-Fluid Path Materials | PTFE / PFA / ceramic |
PTFE / PFA / ceramic |
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| Stroke Detection Options | Fiber optic with or without sensor, or solid state pressure switch |
Fiber optic with or without sensor, or solid state pressure switch |
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| Leak Detection Options | Fiber optic with or without sensor, or conductivity |
Fiber optic with or without sensor, or conductivity |
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| Electronic Control | Available |
Available |
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Model |
AT50 |
AT100 |
AT300HD |
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*May vary depending on configuration. Suction lift diminishes over time. Recommended installation level less than 3 ft above source.
**dB Level at 60 psi 50CPM (top) and 60 psi maximum CPM (bottom). Sound Levels measured in accordance with ISO9614-2:1997.
***Dry-run capable PSUSD030 and PSUSD060 pumps require flooded suction and may have a reduced warranty unless prior arrangements are made with White Knight. Contact White Knight for details.
