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Main -> Pump systems -> Liquid pumps -> Diaphragm liquid pumps
Diaphragm Liquid Pumps, KNF Neuberger
1 LIQUIPORT® diaphragm liquid pumps

Rational aid with adjustable flow rate for neatly bottling even small quantities of liquids or for transferring them to laboratory equipment.
For example, liquid media can be transferred from a container located under the table to the top of the table (foot switch as accessory).
The liquids only come into contact with PP/FFPM/PVDF/PTFE (depending on pump selection). This means they can be used to pump and circulate virtually any aggressive medium found in the laboratory. All versions are self-priming, safe to run dry and maintenance-free. The RC-versions can be externally controlled via the analog signal input point.

Material code:
KT = Head plastic PP, diaphragm PTFE, valve FFPM
TT = Head plastic PVDF, diaphragm PTFE, valve FFPM
FT = Head plastic PTFE, diaphragm PTFE, valve FFPM

TypeFlow rate
l/min		Suction head
mWC		Pressure head
mWC		Weight
kg		Order No.
NF 100 KT.18 S0,2 – 1,3310156 62 60010
NF 100 TT.18 S0,2 – 1,3310156 62 60050
NF 100 FT.18 S0,2 – 1,3310156 62 60030
NF 300 KT.18 S0,5 – 3,03101,556 62 60020
NF 300 TT.18 S0,5 – 3,03101,556 62 60060
NF 300 FT.18 S0,5 – 3,03101,556 62 60040


2 KNF STEPDOS diaphragm metering pump

The microprocessor-controlled STEPDOS Diaphragm Metering Pumps meter the smallest volumes continuously and evenly. Thanks to a special drive technology, these pumps feature a remarkably wide metering range of 1 : 1000. The pump head is made of your choice of PP or PVDF, the valves and seals are made of FFPM, and the diaphragm is PTFE-coated.

 

Technical data:
  • Even discharge over the entire travel range
  • Suitable for virtually any chemical
  • Reproducibility ± 1%

S Version (manual control):
Operation is manual using a keyboard
  • Run Mode:

for continuous metering
  • Dispense Mode:

- metering by volume
- metering by time
- repeated metering with adjustable pause time
  • Rapid suction features

RC Version (manual or external control):
The RC version incorporates all the functions of the S version and can also be controlled externally via analog or digital signals (PC-compatible).

Manual control:

see S Version

External control:
  • Analog signals:

0/4 – 20 mA, 0 – 10 V
  • Digital signals:

RS 232, RS 485
  • Pulse input point:

logic input I/01, I/02

Technical data:

STEPDOS 08
  • Flow rate:

0.08 – 80 ml/min.
  • Pressure:

2 bar
  • Suction head:

4 m
  • Connections:

for hose 4/6 mm (PP, PVDF) and NPT 1/8″ (PTFE, stainless steel)
  • Power supply:

100-230V 50/60 Hz
  • Weight:

1.4 kg
  • Housing:

IP 65 (jet-water proof)
  • Dimensions:

115 × 180 × 80 mm (W×D×H)

STEPDOS 03
  • Flow rate:

0.03 – 30 ml/min.
  • Pressure:

6 bar
  • Suction height:

4 m
  • Connections:

1/4″-28 UNF (female thread)
  • Power supply:

100-230V 50/60 Hz
  • Weight:

1.4 kg
  • Housing:

IP 65 (jet-water proof)
  • Dimensions:

115 × 180 × 80 mm (W×D×H)


TypeHead materialControlOrder No.
STEPDOS 08PPS version (manual)56 62 70800
STEPDOS 08PVDFS version (manual)56 62 70810
STEPDOS 08PTFES version (manual)56 62 70840
STEPDOS 08Stainless steelS version (manual)56 62 70850
STEPDOS 081)PPRC version (man./extern)56 62 70820
STEPDOS 081)PVDFRC version (man./extern)56 62 70830
STEPDOS 081)PTFERC version (man./extern)56 62 70860
STEPDOS 081)Stainless steelRC version (man./extern)56 62 70870
STEPDOS 03PPS version (manual)56 62 71300
STEPDOS 03PVDFS version (manual)56 62 71310
STEPDOS 03PTFES version (manual)56 62 71340
STEPDOS 03Stainless steelS version (manual)56 62 71350
STEPDOS 031)PPRC version (man./extern)56 62 71320
STEPDOS 031)PVDFRC version (man./extern)56 62 71330
STEPDOS 031)PTFERC version (man./extern)56 62 71360
STEPDOS 031)Stainless steelRC version (man./extern)56 62 71370



1) metering pump with man./external control system incl. software for Windows and PC control cable.

Accessories
ArticleLength
m		Order No.
Control cable (without connector)256 62 72002
Control cable (without connector)556 62 72005