High-Purity Mini Pumps

PTFE/PFA fluid paths for low flow chemical processes

Overview

White Knight PPMC Mini Pumps feature PTFE/PFA fluid paths for high-purity chemical processes. The pumps are capable of up to 300 ml/min flow rates and 160 psi discharge pressures. They feature solenoid valves that actuate each suction and dispense action.

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Features & Benefits

  • Metal-free fluid path
  • ≤ 300 ml/min flow rates
  • ≤ 11 bar (160 psi) fluid pressure
  • ≤ 7 bar (100) psi supply air
  • ≤ 100°C (212°F)
  • 0.6 m (2 ft) suction lift
  • Dry-run capable
  • On-board controller with internal solenoid valves
  • 24 VDC using 5 pin Turck power and input connections
  • Operates with analog or digital external inputs, or fixed cycle rate internal controls
  • Various liquid connection options
  • Compact footprint
  • Mount in any direction
  • Easy to install

Operation

Mini-pumps operate by two solenoid valves that actuate both the suction and dispense actions of the pump. While spring-loaded checks enable the pump to mount in any direction, an upward flow path is preferred to better evacuate air bubbles from the fluid line and to improve repeatability.

White Knight PPMC Pump Operation Mounting
Pin
Function
Connection Type
Connector Diagram
1
Power 24 VDC Power Supply

5 pin Turck EuroFast style connector

2
Analog Input 0-5 VDC Analog input to set cycle rate.
- 0-1 VDC = Pump Off
- 1-5 VDC = Pump On = 0-400 CPM
3
Common Ground 0 VDC Ground
4
Valve Control
Actuate Suction
Sink Type Signal
- 24 VDC = Not Active
- 0 VDC = Active
5
Valve Control
Actuate Discharge
Sink Type Signal
- 24 VDC = Not Active
- 0 VDC = Active
Operation
Description
Notes
Analog Input Pump will stop cycling if analog input is 1 VDC or less. If analog input is 1-5 VDC, cycle rate equals: 100*Voltage-100 Pump should be powered on and valve controls disconnected.
External
Valve Control
When pump is powered on and analog input is less than 1 VDC, solenoids and cycle rate can be controlled from external PLC. Pump should be powered on.
Fixed Cycle Rate*

Pump cycles at desired rate when on. It continues cycling until powered off.

Pump should be powered on
and valve controls disconnected.

*Offered by request only

Performance

PPMC300 High Purity Mini Pump Performance

* 300 mL/min at wide open flow path. Performance measurements shown are using a back pressure regulator to simulate a pressurized system. Results may vary.

Specifications

Model
PPMC300
Dispense Volume
per Stroke
~0.75 ml*
Max Flow
300 ml/min
Max Fluid Pressure
11 bar (160 psi)
Max Air Pressure
7 bar (100 psi)
Cycles per min
400 max
Air Consumption
1 SCFM
Fluid Path
Materials
PTFE, PFA
Max Dry
Suction Lift
508 mm (20 in)
Solenoid Valves
2x
24V Manifold Valves 0.7 CV
Turck Connector
5 Pin O-ring Sealed
On-Board
Controller
Power: 24 VDC
Max Power Consumption:
6 Watts
Internal I/O:
• Two 24 VDC Valve outputs
External I/O:
• One 0-5 VDC analog input.
• Two NPN Compatible
Signal Input

* Stroke length varies depending on operation.

Dimensions

Dimensions [mm] in

PPMC High Purity Mini Pump Dimensions

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Configuration

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