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QuestPair

KNF UN842.3FTP IP44 Diaphragm Pump

NewKNFPumps (liquid, other)United States

€3,877.94excl. VAT

In stock

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Maximum Flow Rate
34L/min (2.04 m 3/h)
Ultimate Vacuum
2 mbar (abs.)
Operating Pressure
1 bar (rel.)
Pump Head Material
PTFE
Diaphragm Material
PTFE coated
All 14 specifications
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Specifications 14

Brands
KNF
New/Used
New
Maximum Flow Rate
34L/min (2.04 m 3/h)
Ultimate Vacuum
2 mbar (abs.)
Operating Pressure
1 bar (rel.)
Pump Head Material
PTFE
Diaphragm Material
PTFE coated
Valve Material
FFPM
Hose Connections
ID 10
Protection Class
IP 44
Permissible Ambient Temperature
5°C to 40°C
Dimensions (L x H x W)
13.42 x 8.78 x 6.57 in. (34.1 x 22.3 x 16.7 cm)
Weight
29.54 lb. (13.4 kg)
Electrical Requirements
100-230V, 50/60Hz, 290W

Product description

Compact, oil-free diaphragm pump for aggressive gases; ideal for labs.

KNF UN842.3FTP IP44 Diaphragm Pump

Ultimate Vacuum 2 mbar (abs.) Maximum Flow Rate 34L/min (2.04 m3/h) Protection Class IP 44

Features

  • Clean, 100% oil-free operation
  • Pure transfer, evacuation and compression
  • Chemically-resistant PTFE/FFPM flowpath
  • Ideal for extremely aggressive/corrosive gases and vapors
  • Compact, quiet and reliable
  • Maintenance-free

TheKNF UN842.3FTP IP44 Diaphragm Pump is a dry-running device used in a wide range of laboratoryapplications. They transfer, compress and pump down without contamination. Theheart of these very compact pumps is a KNF structured diaphragm. This patenteddiaphragm was stress-optimized using the Finite Elements method. As a result,KNF was able to make the pump smaller while increasing the service life of thediaphragm. This pump is 115V. INCLUDED: The KNF UN842.3FTP IP44 Diaphragm Pump includes:

  • Power Cord
  • Operator's Guide
  • Manufacturer's Documentation
  • 1 Year Manufacturer's Warranty

Why Questpair exists

Lab equipment markets are fragmented. Buyers spend weeks calling distributors, comparing quotes, and verifying supplier reliability. Sellers struggle to reach global research labs.

We built Questpair to fix this. Every supplier on the platform is verified before listing. Every quote you receive comes from a real, vetted seller. AI prepares your case in minutes, then a real specialist takes over.

We're an independent team based in The Netherlands, working with research labs and procurement teams across Europe and worldwide.

Frequently asked questions

How long does laboratory equipment typically last?

With a service contract, ten to fifteen years is normal for most benchtop instruments. Detectors and pumps are the parts that wear first.

Can I get service for older equipment?

Yes. Every verified supplier states which service partners cover the instrument, and we list that alongside the offer.

Where can I buy parts?

Ask a scientist through the request button. Parts are often available even when the instrument itself is discontinued.

What is the typical lead time for refurbished equipment?

Two to six weeks, depending on refurbishment scope and whether calibration is included.

Does laboratory equipment ship internationally?

We ship to 38 countries. Crating and customs handling are quoted with the instrument.

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Last updated 19 October 2026