White Knight PL Series Pumps

Durable, Shuttle-Driven PTFE and PFA Pumps For High-Purity Chemicals

PL30 and PL120 pumps are discontinued. Please upgrade to PSA Series pumps for better performance, improved reliability, extended pump life, and shorter lead times. See pump comparison information below.

PL60 pumps are not discontinued. Although PL60 has no direct replacement, PSA060 pumps are recommended upgrades. See comparisons below and contact White Knight for details.

Overview

PL Series metal-free bellows pumps feature PTFE and PFA fluid paths. They distribute chemicals at temperatures up to 100°C (212°F) and allow for air supply pressures up to 7 Bar (100 psi). They operate continuously throughout their two-year warranty. The pumps are available in three models, PL30, PL60, and PL120, which are capable of maximum flow rates of 30, 60 and 120 lpm, respectively.

Features & Benefits

  • Metal-free PTFE and PFA liquid path
  • Leak-proof, machined design
  • 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
  • Polypropylene heads, 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 400, 300, or 200 million+ cycles for the PL30, PL60, PL120, respectively
  • No preventative maintenance during two-year warranty
  • A solenoid-driven option is also available

Operation

Internal Shuttle (PL60)

External Shuttle

PL30, PL120, and PSA Series pumps feature external shuttles that operate with a solenoid valve and end of stroke detection.

Supply Air

Exhaust Air

Ambient Air

Liquid Suction

Liquid Discharge

Temperature Limits

PL Series Temperatures

PSA Series Temperatures

Pump Comparisons

Performance

PL30 Performance

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

PSA030 Performance

Dimensions

PL30 Dimensions

PSA030 Dimensions

Specifications

Model
PL30
Warranty
2 Years
2 Years
Max Flow Rate*
30 lpm
7 gpm
24.7 lpm
6.53 gpm
Size of Air Connection
1/8 or 1/4 in FNPT
1/4 in FNPT
Displacement Per Cycle*
0.090 liters
0.024 gal
0.074 liters
0.019 gal
Cycles Per Minute*
≤ 400
≤ 333
Weight
3.0 kg
6.5 lb
3.3 kg
7.28 lb
Suction Lift*
1 m (3 ft)
3 m (10 ft)
Sound Pressure**
72.95 dB(a)
80.35 dB(a)
74.00 dB(a)
79.90 dB(a)
Sound Power**
62.42 dB(a)
70.38 dB(a)
63.01 dB(a)
69.90 dB(a)
Max Pressure
7 Bar (100 psi)
7 Bar (100 psi)
Max Temperature
100°C (212°F)
100°C (212°F)
Fluid Path Materials
PTFE / PFA
PTFE / PFA
Non-Fluid Path Materials
PTFE / PFA / PP / ceramic
PTFE / PFA / PP / 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
PL30

*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

PL60 Performance

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

PSA060 Performance

Dimensions

PL60 Dimensions

PSA060 Dimensions

Specifications

Model
PL60
Warranty
2 Years
2 Years
Max Flow Rate*
60 lpm
15 gpm
62.3 lpm
16.46 gpm
Size of Air Connection
1/4 or 3/8 in FNPT
1/4 in FNPT
Displacement Per Cycle*
0.143 liters
0.038 gal
0.178 liters
0.047 gal
Cycles Per Minute*
≤ 320
≤ 348
Weight
5.6 kg
12.3 lb
4.7 kg
10.36 lb
Suction Lift*
1 m (3 ft)
3 m (10 ft)
Sound Pressure**
75.44 dB(a)
83.44 dB(a)
73.11 dB(a)
82.50 dB(a)
Sound Power**
66.94 dB(a)
75.73 dB(a)
64.29 dB(a)
74.11 dB(a)
Max Pressure
7 Bar (100 psi)
7 Bar (100 psi)
Max Temperature
100°C (212°F)
100°C (212°F)
Fluid Path Materials
PTFE / PFA
PTFE / PFA
Non-Fluid Path Materials
PTFE / PFA / PP / ceramic
PTFE / PFA / PP / 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
PL60

*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

PL120 Performance

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

PSA140 Performance

Dimensions

PL120 Dimensions

PSA140 Dimensions

Specifications

Model
PL60
Warranty
2 Years
2 Years
Max Flow Rate*
120 lpm
32 gpm
123 lpm
32.5 gpm
Size of Air Connection
1/4 or 3/8 in FNPT
3/8 in FNPT
Displacement Per Cycle*
0.692 liters
0.183 gal
0.50 liters
0.132 gal
Cycles Per Minute*
≤ 130
≤ 273
Weight
18.4 kg
40.4 lb
16.60 kg
36.60 lb
Suction Lift*
1 m (3 ft)
3 m (10 ft)
Sound Pressure**
81.98 dB(a)
91.60 dB(a)
81.98 dB(a)
91.60 dB(a)
Sound Power**
76.37 dB(a)
83.16 dB(a)
76.37 dB(a)
83.16 dB(a)
Max Pressure
7 Bar (100 psi)
7 Bar (100 psi)
Max Temperature
100°C (212°F)
100°C (212°F)
Fluid Path Materials
PTFE / PFA
PTFE / PFA
Non-Fluid Path Materials
PTFE / PFA / PP / ceramic
PTFE / PFA / PP / 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
PL60

*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.