White Knight AT Series Pumps

Shuttle-Driven PTFE and PFA Pumps for High-Temperature Applications

AT Series pumps are discontinued. Please upgrade to PSU Series pumps for better performance, improved reliability, shorter lead times, extended pump life, and increased warranty periods. See pump comparison information below.

Overview

AT Series pumps were the world’s first metal-free 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.

Features & Benefits

  • Metal-free PTFE and PFA liquid path
  • Leak-proof, machined design
  • 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

Temperature Limits

AT Series Temperatures

PSU Series Temperatures

Pump Comparisons

Performance

AT50 Performance

*Air Usage data intentionally removed due to changes in data collection method

PSU030 Performance

Dimensions

AT50 Dimensions

PSU030 Dimensions

Specifications

Model
AT50
Warranty
1 Year
2 Years
Max Flow Rate*
20 lpm
5 gpm
26.2 lpm
6.92 gpm
Size of Air Connection
1/4 in FNPT
1/4 in FNPT
Displacement Per Cycle*
0.056 liters
0.015 gal
0.074 liters
0.019 gal
Cycles Per Minute*
≤ 400
≤ 333
Weight
5.8 kg
12.9 lb
6.4 kg
14.1 lb
Suction Lift*
1 m (3 ft)
1 m (3 ft)
Sound Pressure**
70.36 dB(a)
74.91 dB(a)
74.00 dB(a)
79.90 dB(a)
Sound Power**
59.79 dB(a)
64.91 dB(a)
63.01 dB(a)
69.90 dB(a)
Max Pressure
4 Bar (60 psi)
7 Bar (100 psi)
Max Temperature
210°C (410°F)
210°C (410°F)
Fluid Path Materials
PTFE / PFA
PTFE / PFA
Non-Fluid Path Materials
PTFE / PFA / ceramic
PTFE / PFA / ceramic
Stroke Detection Options
Fiber optic with or without sensor, or solid state pressure switch
Leak Detection Options
Fiber optic with or without sensor, or conductivity
Electronic Control
Available
Model
AT50

*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.
Contact White Knight for details.

Performance

AT100 Performance

*Air Usage data intentionally removed due to changes in data collection method

PSU060 Performance

Dimensions

AT100 Dimensions

PSU060 Dimensions

Specifications

Model
AT100
Warranty
1 Year
2 Years
Max Flow Rate*
40 lpm
10 gpm
62.2 lpm
16.43 gpm
Size of Air Connection
1/4 in FNPT
1/4 in FNPT
Displacement Per Cycle*
0.151 liters
0.040 gal
0.178 liters
0.047 gal
Cycles Per Minute*
≤ 275
≤ 348
Weight
13.0 kg
28.6 lb
15.2 kg
33.4 lb
Suction Lift*
1 m (3 ft)
1 m (3 ft)
Sound Pressure**
72.38 dB(a)
79.12 dB(a)
73.11 dB(a)
82.50 dB(a)
Sound Power**
64.31 dB(a)
71.98 dB(a)
64.29 dB(a)
74.11 dB(a)
Max Pressure
4 Bar (60 psi)
7 Bar (100 psi)
Max Temperature
210°C (410°F)
210°C (410°F)
Fluid Path Materials
PTFE / PFA
PTFE / PFA
Non-Fluid Path Materials
PTFE / PFA / ceramic
PTFE / PFA / ceramic
Stroke Detection Options
Fiber optic with or without sensor, or solid state pressure switch
Leak Detection Options
Fiber optic with or without sensor, or conductivity
Electronic Control
Available
Model
AT100

*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.
Contact White Knight for details.

Performance

AT300 Performance

*Air Usage data intentionally removed due to changes in data collection method

PSU140 Performance

Dimensions

AT300 Dimensions

PSU140 Dimensions

Specifications

Model
AT300HD
Warranty
1 Year
2 Years
Max Flow Rate*
110 lpm
30 gpm
123 lpm
32.5 gpm
Size of Air Connection
3/8 in FNPT
3/8 in FNPT
Displacement Per Cycle*
0.606 liters
0.16 gal
0.50 liters
0.132 gal
Cycles Per Minute*
≤ 175
≤ 273
Weight
28.3 kg
62.4 lb
22.7 kg
50.0 lb
Suction Lift*
1 m (3 ft)
1 m (3 ft)
Sound Pressure**
74.80 dB(a)
82.31 dB(a)
81.98 dB(a)
91.60 dB(a)
Sound Power**
69.24 dB(a)
77.17 dB(a)
76.37 dB(a)
83.16 dB(a)
Max Pressure
4 Bar (60 psi)
7 Bar (100 psi)
Max Temperature
210°C (410°F)
210°C (410°F)
Fluid Path Materials
PTFE / PFA
PTFE / PFA
Non-Fluid Path Materials
PTFE / PFA / ceramic
PTFE / PFA / ceramic
Stroke Detection Options
Fiber optic with or without sensor, or solid state pressure switch
Leak Detection Options
Fiber optic with or without sensor, or conductivity
Electronic Control
Available
Model
AT300HD

*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.
Contact White Knight for details.