White Knight AT Series Pumps

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

AT50 pumps were discontinued Dec 31, 2016. AT300 pumps were discontinued Dec 31, 2015. Please upgrade to PSU140 pumps for better performance, improved reliability, extended pump life and shorter lead times. AT50 and AT300 pumps will be supported for five years after discontinuation.

White Knight AT Series Pumps for Semiconductor

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
White Knight Ultra-Pure Teflon PTFE and PFA Pump Materials
Chemical Recirculation 4 Bar (60 psi) Pressures
Pump Temperatures to 210 Celsius (410 Fahrenheit)
White Knight Pneumatic Shuttle Valve Shift Method
White Knight 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.

Pneumatic Shuttle-Driven Pump Operations Diagram

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

Temperature Limits

Performance & Dimensions

AT50 Performance

White Knight AT50 Pump Performance Curves

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AT100 Performance

White Knight AT100 Pump Performance Curves

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AT300HD Performance

White Knight AT300HD Pump Performance Curves

Click image to enlarge.

PSU030 Performance

White Knight PSU030 Pump Performance Curves

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PSU060 Performance

White Knight PSU060 Pump Performance Curves

Click image to enlarge.

PSU140 Performance

White Knight PSU140 Pump Performance Curves

Click image to enlarge.

Compare Maximum Flowrates

AT50 up to 20 LPM (5 GPM)
PSU030 up to 30 LPM (7 GPM)
AT100 up to 40 LPM (10 GPM)
PSU060 up to 60 LPM (15 GPM)
AT300HD up to 110 LPM (30 GPM)
PSU140 up to 140 LPM (35 GPM)
PSU Series Pumps

Specifications

Model
AT50
AT100
AT300HD
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)
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
Fiber optic with or without sensor, or solid state pressure switch
Leak Detection Options
Fiber optic with or without sensor, or conductivity
Fiber optic with or without sensor, or conductivity
Electronic Control
Available
Available
Model
AT50
AT100
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.
***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.