PSU Series White Knight Pumps

PTFE/PFA Pumps Capable of 210°C (410°F) with On-Board Shuttle Valve


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PSU Series pumps are the ideal solution for ultra-high temperature, ultra-high purity recirculation and delivery applications. These PTFE/PFA pumps are completely metal free and operate with the unique White Knight shuttle valve, which eliminates the need for complicated detents and manual resets. They operate continuously throughout their two-year warranty. They offer air supply pressures up to 7 Bar (100 psi) and operate in thermal cycling applications with fluid temperatures up to 210°C (410°F).

The pumps are available in three models, PSU030, PSU060 and PSU140, which are capable of maximum flow rates of 30, 60 and 140 lpm, respectively.

Features & Benefits

  • 100% Metal-Free
  • Process-safe PTFE/PFA flow paths
  • 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 liquid pulsation and pump vibration
  • Various liquid connection options
  • Safe, leak-free operation due to no-metal design
  • Polypropylene and ceramic in air side
  • Minimal parts for durable design
  • Class 100 cleanroom assembly, testing, and packaging
  • Easy to install and service
  • Robust bellows enable supply pressure of 7 Bar (100 psi)
  • Dead-head capable operation
  • No preventative maintenance during two-year warranty
White Knight Ultra-Pure Teflon PTFE/PFA Pump Materials
Chemical Recirculation and Delivery 7 Bar (100 psi) Pressures
Pump Temperatures to 210 Celsius (410 Fahrenheit)
White Knight Pneumatic Shuttle Valve Shift Method
White Knight Two-Year Warranty
CE Certification Mark


PSU 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 optics. PXU Series pumps are controlled with proximity sensors.

Supply Air

Exhaust Air

Ambient Air

Shift Signal

Liquid Suction

Liquid Discharge

Temperature Limits

Performance Curves

PSU030 Performance Curves

PSUSD030 Performance Curves

PSU060 Performance Curves

PSUSD060 Performance Curves

PSU140 Performance Curves


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PSU030 Dimensions

Dimensions in [mm] in.

Download PSU030 Dimensions (PDF)

PSU060 Dimensions

Dimensions in [mm] in.

Download PSU060 Dimensions (PDF)

PSU140 Dimensions

Dimensions in [mm] in.

Download PSU140 Dimensions (PDF)


Max Flow Rate*
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
Displacement Per Cycle*
0.074 liters
0.019 gal
0.178 liters
0.047 gal
0.500 liters
0.132 gal
Cycles Per Minute*
333 max
348 max
273 max
6.2 kg (14.1 lb)
15.17 kg (33.4 lb)
22.68 kg (50.0 lb)
Suction Lift*
1 m (3 ft)
1 m (3 ft)
1 m (3 ft)
Sound Pressure**
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**
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 Temperature
210°C (410°F)
Max Pressure
7 Bar (100 psi)
Fluid Path Materials
Non-Fluid Path Materials
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

*May vary depending on configuration. Suction lift diminishes over time. Recommended installation level less than 3 ft. above source.
**dB Level at 60 psi 50 CPM (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.