High-Purity Bellows Pumps

Reliable, metal-free pumps with PTFE/PFA flow paths

Overview

White Knight air-operated double-bellows (AODB) pumps are used to manufacture semiconductors, photovoltaic solar cells, LEDs, flat-panel displays and electronics. These high-purity chemical pumps feature PTFE/PFA fluid paths. They do not contain metals, elastomer O-rings, impellers or electric motors. Their reliable designs use minimal parts, and operate continuously throughout their warranty period with no required maintenance.

White Knight Pumps for Semiconductor Fabrication

Pump Models

White Knight high-purity pumps models are capable of 210°C (410°F), 145°C (293°F) or 100°C (212°F) temperatures, and they are available with on-board shuttle, fiber-optics or proximity controls. Economy pumps for recirculation applications are available, and dry-run versions are also available for most models.

Find Pumps by Temperatures

White Knight offers pumps capable of operating at up to 145°C (293°F) or 210°C (410°F), depending on model.

Pumps Capable of 100°C (212°F)

Pumps Capable of 145°C (293°F)

Pumps Capable of 210°C (410°F)

Find Pumps by Control Method

White Knight offers pumps with on-board shuttle valves, fiber optics or pressure switches.

Pumps with On-Board Shuttle Valves

Pumps Controlled with Fiber Optics

Pumps Controlled with Proximity Switches

White Knight PSA Series Air-Operated Double-Bellows Pumps

PSA Series Pumps
Shuttle pumps for temperatures up to 100°C (212°F) and pressures up to 7 Bar (100 psi).

White Knight PSH Series Air-Operated Double-Bellows Pumps

PSH Series Pumps
Shuttle pumps for temperatures up to 145°C (293°F) and pressures up to 5.5 Bar (80 psi).

White Knight PSU Series Air-Operated Double-Bellows Pumps

PSU Series Pumps
Shuttle pumps for temperatures up to 210°C (410°F) and pressures up to 7 Bar (100 psi).

White Knight PSR Series Pumps

PSR Series Pumps
Economical shuttle pumps for recirculation applications. PSR pumps are capable of temperatures up to 100°C (212°F) and pressures up to 4 Bar (60 psi).

White Knight PFA Series Air-Operated Double-Bellows Pumps

PFA Series Pumps
Fiber-optic pumps for temperatures up to 100°C (212°F) and pressures up to 7 Bar (100 psi).

White Knight PFH Series Air-Operated Double-Bellows Pumps

PFH Series Pumps
Fiber-optic pumps for temperatures up to 145°C (293°F) and pressures up to 5.5 Bar (80 psi).

White Knight PFU Series Air-Operated Double-Bellows Pumps

PFU Series Pumps
Fiber-optic pumps for temperatures up to 210°C (410°F) and pressures up to 7 Bar (100 psi).

White Knight PXA Series Air-Operated Double-Bellows Pumps

PXA Series Pumps
Proximity pumps for temperatures up to 100°C (212°F) and pressures up to 7 Bar (100 psi).

White Knight PXH Series Air-Operated Double-Bellows Pumps

PXH Series Pumps
Proximity pumps for temperatures up to 145°C (293°F) and pressures up to 5.5 Bar (80 psi).

White Knight PXU Series Air-Operated Double-Bellows Pumps

PXU Series Pumps
Proximity pumps for temperatures up to 210°C (410°F) and pressures up to 7 Bar (100 psi).

Pump Configuration

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Legacy Pump Models

White Knight’s legacy pumps include the world’s first metal-free Teflon® PTFE/PFA pumps, and the first pump capable of operating at 210°C (410°F). White Knight has since built upon legacy designs to offer improved performance, better reliability, extended pump life, shorter delivery times, and more.

Please see the recommended replacements or contact White Knight for more information.

White Knight will continue support for legacy pumps.

See All Legacy Models

Specifications

Product Series
Max Air Supply Pressure
7 Bar
100 PSI
7 Bar
100 PSI
7 Bar
100 PSI
5.5 Bar
80 PSI
5.5 Bar
80 PSI
5.5 Bar
80 PSI
7 Bar
100 PSI
7 Bar
100 PSI
7 Bar
100 PSI
4 Bar
60 PSI
Max Operating
Temperature
210° C
410° F
210° C
410° F
210° C
410° F
145° C
293° F
145° C
293° F
145° C
293° F
100° C
212° F
100° C
212° F
100° C
212° F
100° C
212° F
Max Flow Rates
of Pump Models
in LPM (GPM)
30 (7)
60 (15)
140 (36)
30 (7)
60 (15)
140 (36)
30 (7)
60 (15)
140 (36)
30 (7)
60 (15)
140 (36)
30 (7)
60 (15)
140 (36)
30 (7)
60 (15)
140 (36)
30 (7)
60 (15)
140 (36)
30 (7)
60 (15)
140 (36)
30 (7)
60 (15)
140 (36)
25 (6)
50 (13)
Shift Method
Shuttle Valve
Fiber Optics
Prox. Switch
Shuttle Valve
Fiber Optics
Prox. Switch
Shuttle Valve
Fiber Optics
Prox. Switch
Shuttle Valve
Fluid Path Materials PTFE/PFA PTFE/PFA PTFE/PFA PTFE/PFA PTFE/PFA PTFE/PFA PTFE/PFA PTFE/PFA PTFE/PFA PTFE/PFA
Non-Fluid Path Materials PTFE, PFA,
Ceramic
PTFE, PFA PTFE, PFA, SS PTFE, PFA, Ceramic PTFE, PFA PTFE, PFA, SS PTFE, PFA, PP, Ceramic PTFE, PFA, PP PTFE, PFA, PP, SS PTFE, PFA, PP, Ceramic
Warranty Period
2 years
2 years
2 years
2 years
2 years
2 years
2 years
2 years
2 years
1 years
Comparable Legacy Model
AT
-
-
APFM
-
-
AP, X, PL
PLF
PX
X
Product Series
Max Air Supply Pressure
4 Bar
60 PSI
4 Bar
60 PSI
4 Bar
60 PSI
4 Bar
60 PSI
7 Bar
100 PSI
7 Bar
100 PSI
7 Bar
100 PSI
Max Operating
Temperature
210° C
410° F
100° C
212° F
100° C
212° F
100° C
212° F
100° C
212° F
100° C
212° F
100° C
212° F
Max Flow Rates
of Pump Models
in LPM (GPM)
20 (5)
45 (12)
110 (30)
115 (30)
68 (17)
55 (14)
20 (5)
14 (3)
115 (30)
68 (17)
55 (14)
20 (5)
20 (5)
55 (14)
30 (7)
60 (15)
120 (30)
30 (7)
60 (15)
120 (30)
30 (7)
60 (15)
120 (30)
Shift Method
Shuttle Valve
Shuttle Valve
Shuttle Valve
Shuttle Valve
Shuttle Valve
Prox. Switch
Fiber Optic
Fluid Path Materials PTFE/PFA PTFE/PFA PTFE/PFA PTFE/PFA PTFE/PFA PTFE/PFA PTFE/PFA
Non-Fluid Path Materials PTFE/PFA
Ceramic
PTFE/PFA
PP/Ceramic
PTFE/PFA
Ceramic
PTFE/PFA
PP/Ceramic
PTFE/PFA
PP/Ceramic
PTFE/PFA
PP / SS
PTFE/PFA
PP
Application Purity
(U=Ultra High Purity,
H=High Purity)

U

U

U

U

U

H

U
Warranty Period
1 years
1 years
1 years
1 years
2 years
2 years
2 years
Recommended Replacement
White Knight Closed-Loop Control Systems

High-Purity Closed-Loop Pump Systems

Automatically maintain laminar flow or steady pressure with metal-free closed-loop control systems offering stable temperatures, dead-head and suction lift!

White Knight’s closed-loop systems provide complete control of high purity chemical processes and delivery systems. They simplify process automation to save customers time and resources, and they reduce costs by eliminating the need for expensive pressure systems.

  • ≤ 140 lpm (36 gpm) flow rates

  • ≤ 7 Bar (100 psi) pressures

  • ≤ 210°C (410°F) temperatures

  • No metals or elastomer O-rings

  • No impellers or electric motors

  • Maintain stable temperatures

High-Purity Closed-Loop Systems

Why Choose White Knight?

We Solve Fluid Handling Problems

White Knight Benefits

We understand the importance of quality materials and purity in the manufacturing environment. We go to great lengths to guarantee the purest, cleanest pumps with the industry’s best warranty.

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Technological Advantages

White Knight engineers design superior fluid handling solutions for specialized chemical delivery technologies.

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Setup custom tests at White Knight or get a demo pump to test at your facility.

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White Knight controls quality through fully documented in-house engineering and manufacturing processes.

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Comprehensive pump service and rebuild trainings ensure consistent quality operation.

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Informed employees and maintained equipment ensures quality product.

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Stocked inventory and short lead times on documented products ready to ship.

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Increase pump lifespan with reliable, corrosion-free pumps with replaceable parts.

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Metal-free pumps eliminate corrosion, which prevents leaks and contamination.

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High-purity pumps maintain cleanliness, enabling rebuilds and longer life cycles.

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