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QuestPair

KNF UN840.1.2FTP IP44 Diaphragm Pump

NewKNFPumps (liquid, other)United States

€2,582.91excl. VAT

In stock

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Maximum Flow Rate
65L/min (3.9 m 3/h)
Ultimate Vacuum
90 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
65L/min (3.9 m 3/h)
Ultimate Vacuum
90 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 8.89 x 6.29 in. (34.1 x 22.6 x 16.0 cm)
Weight
27.78 lb. (12.6 kg)
Electrical Requirements
100-230V, 50/60Hz, 280W

Product description

Compact, oil-free diaphragm pump for versatile lab applications.

KNF UN840.1.2FTP IP44 Diaphragm Pump

Ultimate Vacuum 90 mbar (abs.) Maximum Flow Rate 65L/min (3.9 m3/h) Protection Class IP44

Features

  • Pure transfer, evacuation and compression
  • Highly compatible with vapors and condensation
  • Chemically resistant flowpath
  • Suitable for highly aggressive or corrosive gases and vapors
  • Environmentally friendly
  • Maintenance-free

Thechemically-resistant UN840.1.2FTP diaphragm pump is a oil-free deviceused in a wide range of laboratory applications. These pumps transfer and pumpdown without contamination.The heart ofthis very compact pump is a KNF structured diaphragm. This patented diaphragmwas stress-optimized using the Finite Elements method. As a result, we wereable to make the pump smaller while increasing the service life of thediaphragm and improving performance. This pump is 115V. INCLUDED: The KNF UN840.1.2FTP 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