White Knight PLF Series Pumps

Durable Teflon® PTFE and PFA Pumps with Fiber-Optics for High-Purity Chemicals

PF/PLF Series pumps were discontinued Dec 31, 2015. Please upgrade to PFA Series pumps for better performance, improved reliability, extended pump life and shorter lead times. See comparisons below. PF/PLF Series pumps will be supported for five years after discontinuation.

White Knight PLF Series Pumps for Semiconductor

Overview

PLF Series metal-free pumps have Teflon® PTFE and PFA fluid paths. They are capable of distributing chemicals at temperatures up to 100°C (212°F) and allow for air supply pressures up to 7 Bar (100 psi). The pumps operate with fiber optic sensors. They are available in three models, PLF30, PLF60, and PLF120, which are capable of maximum flow rates of 30, 60 and 120 lpm, respectively.

While White Knight continues to offer and support PLF Series pumps, we recommend users consider PFA 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 comparisons below.

Features & Benefits

  • Metal-free Teflon® 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
  • Various liquid connection options
  • Easily replaces competitive products using fiber optic sensors
  • Safe, leak-free operation due to no-metal design
  • Polypropylene heads
  • 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 PLF30, PLF60, PLF120, respectively
  • No preventative maintenance during two-year warranty
White Knight Two-Year Warranty
White Knight Ultra-Pure Teflon PTFE and PFA Pump Materials
Chemical Delivery 7 Bar (100 psi) Pressures
Pump Temperatures to 100 Degrees Celsius (212 Degrees Fahrenheit)
White Knight Fiber-Optic Shift Method

Operation

PLF Series pumps operate with a solenoid valve and fiber optics that optimize stroke timing by shifting the pump quickly and efficiently to increase durability.

Fiber Optic Sensor-Controlled Pump Operations Diagram

Need shuttle valves or proximity switches?

PSA Series pumps are controlled by shuttle valves.
PXA Series pumps are controlled with proximity switches.

Supply Air

Exhaust Air

Ambient Air

Shift Signal

Liquid Suction

Liquid Discharge

Temperature Limits

Performance & Dimensions

PLF30 Performance

White Knight PLF30 Pump Performance Curves

Click image to enlarge.

PLF60 Performance

White Knight PLF60 Pump Performance Curves

Click image to enlarge.

PLF120 Performance

White Knight PLF120 Pump Performance Curves

Click image to enlarge.

PFA030 Performance

White Knight PFA030 Pump Performance Curves

Click image to enlarge.

PFA060 Performance

White Knight PFA060 Pump Performance Curves

Click image to enlarge.

PFA140 Performance

White Knight PFA140 Pump Performance Curves

Click image to enlarge.

Compare Maximum Flowrates

PLF30 up to 30 LPM (7 GPM)
PFA030 up to 30 LPM (7 GPM)
PLF60 up to 60 LPM (15 GPM)
PFA060 up to 60 LPM (15 GPM)
PLF120 up to 120 LPM (30 GPM)
PFA140 up to 140 LPM (35 GPM)
PFA Series Pumps

Specifications

Model
PLF30
PLF60
PLF120
Max Flow Rate*
30 lpm
7 gpm
60 lpm
15 gpm
120 lpm
35 gpm
25.7 lpm
6.79 gpm
66.1 lpm
17.46 gpm
146.7 lpm
38.75 gpm
Size of Air Connection
1/8 or 1/4 in. FNPT
1/4 or 3/8 in. FNPT
1/4 or 3/8 in. FNPT
1/4 in. FNPT
1/4 in. FNPT
3/8 in. FNPT
Displacement Per Cycle*
0.076 liters
0.02 gal
0.189 liters
0.05 gal
0.473 liters
0.12 gal
0.089 liters
0.024 gal
0.216 liters
0.057 gal
0.500 liters
0.132 gal
Cycles Per Minute*
≤ 400
≤ 320
≤ 130
≤ 336
≤ 318
≤ 233
Weight
2.6 kg
5.7 lb
5.2 kg
11.3 lb
17.1 kg
37.6 lb
2.4 kg
5.3 lb
4.7 kg
10.4 lb
15.6 kg
34.4 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**
72.95 dB(a)
80.35 dB(a)
75.44 dB(a)
83.49 dB(a)
81.98 dB(a)
91.60 dB(a)
69.54 dB(a)
66.58 dB(a))
82.74 dB(a)
82.61 dB(a)
81.98 dB(a)
91.60 dB(a)
Sound Power**
62.42 dB(a)
70.38 dB(a)
66.94 dB(a)
75.73 dB(a)
76.37 dB(a)
83.16 dB(a)
58.44 dB(a)
65.52 dB(a)
71.92 dB(a)
73.84 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
PTFE / PFA / PP
Stroke Detection Options
Fiber optic with or without sensor
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
PLF30
PLF60
PLF120

*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 PFASD030 and PFASD060 pumps require flooded suction and may have a reduced warranty unless prior arrangements are made with White Knight. Contact White Knight for details.