Raising the Bar in Chemical Delivery

Highest Operating Pressure and Most Displacement of Corrosion-Resistant, Metal-Free Pumps

Pumps for Chemical Delivery

White Knight PSA Series high-purity pumps are durable, reliable, and require low maintenance. They feature PTFE and PFA fluid paths for optimal chemical compatibility. They do not have metals, elastomer O-rings, impellers or electric motors. These chemical delivery pumps are designed for flow rates up to 140 lpm (36 gpm), depending on model. They are capable of temperatures up to 100°C (212°F) and air pressures up to 7 Bar (100 psi). White Knight’s Pneumatic Logic™ offers full dead-head capabilities and reliable restarts without intervention.

Need Higher 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 145°C (293°F)

Pumps Capable of 210°C (410°F)

Need Fiber Optics or Proximity Switches?

White Knight offers pumps with fiber optics or pressure switches.

Pumps Controlled with Fiber Optics

Pumps Controlled with Proximity Switches

White Knight High-Purity Chemical Delivery Pumps
  • Dead-Head Capable Operation
  • Reliable, Maintenance-Free
  • Metal-Free, Process Safe
  • Laminar flow, Stable Pressures
  • Superior Seals — No Leaking
  • No Metals — No Corrosion
  • No Elastomer O-Rings — Never Retorque
  • No Impellers or Electric Motors — No Heat Rise

White Knight Chemical Delivery Pumps

PSA and PSD Series Pumps for Chemical Delivery Applications

White Knight PSA060 PSA140 Chemical Pumps

PSA Series Pumps

PSA Series air-operated double-bellows (AODB) pumps are capable of high pressures and high temperatures. They can recover from dead-head situations without intervention. The pumps feature PTFE and PFA fluid paths and will operate at red-line conditions throughout their warranty periods. Dry-run versions available.

PSA Series Pumps
White Knight PSD Seires AODD Diaphragm Pumps

PSD Series Pumps

PSD Series air-operated double-diaphragm (AODD) pumps offer superior performance, optimized efficiency, simplified maintenance, and reduced noise levels. Their leak-proof and icing-resistant design provides constant, reliable, and safe operation in applications that utilize corrosive or toxic liquids, viscous fluids, or slurry.

PSD Series Pumps

Compare Pumps

Pump Models
Machined Design
PTFE/PFA Flow Paths
Tongue-and-Groove Seals
100% Metal Free
Non-Lubricated Shift Mechanism
Max. Flow Rates
62 lpm (16.5 gpm)
123 lpm (32.5 gpm)
63 lpm (16.6 gpm)
142 lpm (37.5 gpm)
Fluid Path Materials
Max. Supply Air Pressures
7 Bar (100 psi)
7 Bar (100 psi)
7 Bar (100 psi)
7 Bar (100 psi)
Min. Startup Air Pressures
1.4 Bar (20 psi)
1.4 Bar (20 psi)
1.4 Bar (20 psi)
1.4 Bar (20 psi)
Max Temperatures
100°C (212°F)
100°C (212°F)
100°C (212°F)
100°C (212°F)
Suction Lift*
3 m (10 ft.)
3 m (10 ft.)
9.5 m (31 ft.)
9.5 m (31 ft.)
4.7 kg (10.4 lbs.)
16.6 kg (36.6 lbs.)
9.0 kg (19.8 lbs.)
18.2 kg (40.1 lbs.)
Air Connection
1/4 in. FNPT
3/8 in. FNPT
1/4 in. FNPT
1/4 in. FNPT
2 Year
2 Year
1 Year
1 Year

*May vary by configuration. Suction lift diminishes over time. Recommended installation level less than 3 ft above source. Contact White Knight for details.

Pump Performance & Dimensions

PSA060 Performance

PSA060 Dimensionals

Dimensions [mm] in

PSA140 Performance

PSA140 Dimensionals

Dimensions [mm] in

PSD08 Performance

PSD08 Dimensionals

Dimensions [mm] in

PSD16 Performance

PSD16 Dimensionals

Dimensions [mm] in

White Knight Closed-Loop Control Systems

High-Purity Closed-Loop Pump Systems

Automatically maintain laminar flow or steady pressure. White Knight closed-loop systems feature metal-free pumps with PTFE and PFA flow paths. They provide 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
  • Maintain stable temperatures
  • No metals, no corrosion
  • No elastomer O-rings, no leaks
  • No electric motors, no heat rise
  • No impellers, no microbubbles
High-Purity Closed-Loop Systems
White Knight Rebuild Training for High-Purity Pumps

Training Programs

Certified Training White Knight provides comprehensive training for all employees and distributors…

White Knight Testing Lab with Metering Pumps PEM050

Testing Programs

Product Testing All White Knight products are subject to various testing procedures…

White Knight Cleanroom for Pumps used in Non-Metal Applications

Repairs and Rebuilds

Rebuild Pump, Renew Warranty White Knight pumps are designed for easy, quick…

White Knight High-Purity Pump Bodies and Heads

Inventory & Tracking

White Knight eliminates inventory waste and obstacles by minimizing our supply chain…