PXH Series White Knight Pumps

PTFE/PFA Pumps Capable of 145°C (293°F) with Proximity Switch Controls


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PXH Series pumps are the ideal solution for high temperature and ultra-pure recirculation or delivery applications where proximity sensors are required for optimum systems control. These PTFE/PFA pumps are completely metal free and operate with proximity switches and external solenoid valve. They perform safely and reliably running continuously throughout their two-year warranty. They offer air supply pressures up to 5.5 Bar (80 psi) and operate in thermal cycling applications with fluid temperatures up to 145°C (293°F).

The pumps are available in three models, PXH030, PXH060 and PXH140, which are capable of maximum flow rates of 30, 60 and 140 lpm, respectively.

Features & Benefits

  • Process-safe PTFE/PFA flow paths
  • Leak-proof, machined design
  • PTFE heads with Buttress-Threads
  • No elastomer O-rings, no leaks, never retorque
  • No lubrication in shift mechanisms
  • No electric motors, which generate heat
  • Various liquid connection options
  • Safe, leak-free operation due to no-metal design
  • Minimal parts for durable design
  • Class 100 cleanroom assembly, testing, and packaging
  • Easy to install and service
  • Dual proximity sensors
  • Robust bellows offer supply pressure of 5.5 Bar (80 psi)
  • No preventative maintenance during two-year warranty
White Knight Ultra-Pure Teflon PTFE/PFA Pump Materials
Chemical Recirculation and Delivery 5.5 Bar (80 psi) Pressures
Pump Temperatures to 145 Celsius (293 Fahrenheit)
White Knight Proximity Switch Shift Method
White Knight Two-Year Warranty
CE Certification Mark


PXH Series pumps operate with proximity switches and solenoid valve that optimize stroke timing by shifting the bellows quickly and efficiently to increase durability.

Need shuttle valve or fiber optic sensors?

PSH Series pumps are controlled by shuttle valves.
PFH Series pumps are controlled with fiber optic sensors.

Supply Air

Exhaust Air

Ambient Air

Shift Signal

Liquid Suction

Liquid Discharge

Temperature Limits

Need Higher Temperatures?

PXU Series pumps are capable of temperatures up to 210°C (410°F).

Performance Curves

PXH030 Performance Curves

PXHSD030 Performance Curves

PXH060 Performance Curves

PXHSD060 Performance Curves

PXH140 Performance Curves


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PXH030 Dimensions

Dimensions: [mm] in

Download PXH030 Dimensions (PDF)

PXH060 Dimensions

Dimensions: [mm] in

Download PXH060 Dimensions (PDF)

PXH140 Dimensions

Dimensions: [mm] in

Download PXH140 Dimensions (PDF)


Flow Rate*
24.3 lpm
6.42 gpm
63.8 lpm
16.85 gpm
137.8 lpm
36.40 gpm
Size of Air Connection
1/4-in FNPT
1/4-in FNPT
3/8-in FNPT
Displacement Per Cycle*
0.077 liters
0.020 gal
0.649 liters
0.050 gal
0.500 liters
0.132 gal
Cycles Per Minute*
390 max
366 max
247 max
3.6 kg (8.0 lb)
5.9 kg (13.0 lb)
17.2 kg (38.0 lb)
Suction Lift*
1 m (3 ft)
1 m (3 ft)
1 m (3 ft)
Sound Pressure**
69.54 dB(a)
75.56 dB(a)
68.60 dB(a)
82.12 dB(a)
74.81 dB(a)
76.91 dB(a)
Sound Power**
58.44 dB(a)
64.49 dB(a)
60.66 dB(a)
73.35 dB(a)
72.30 dB(a)
73.45 dB(a)
Max Temperature
145°C (293°F)
Max Pressure
5.5 Bar (80 psi)
Fluid Path Materials
Non-Fluid Path Materials
Stroke Detection Options
Proximity stroke detection
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 PXHSD030 and PXHSD060 pumps require flooded suction and may have a reduced warranty unless prior arrangements are made with White Knight. Contact White Knight for details.