Home > Vacuum Pumps >

KNF UN840.3FT.40P IP44-T Diaphragm Pump
KNF UN840.3FT.40P IP44-T Diaphragm Pump

Manufacturer's List Price: $5,451.07
Our Price: $3,746.44
Money Saved: $1,704.63

Condition: Brand New
Warranty: 1 Year Manufacturer's Warranty
Typically Ships Within: 10 to 12 Weeks

Request a Formal Quote

Quantity in Stock:2

Product Code: UN840.3FT.40P

Technical Specification Sheet (NEW)

KNF UN840.3FT.40P IP44-T Diaphragm Pump

The KNF UN840.3FT.40P IP44-T Diaphragm Pump Diaphragm Pump features an integrated KNF self-drying system. Designed for a wide range of applications in laboratories, including vacuum drying of chambers (for drying or heat-treating substances and components) or steam sterilizers for sterilizing instruments, vessels, filters and textiles. The KNF UN840.3FT.40P IP44-T Diaphragm Pump Diaphragm Pump Diaphragm Pump can be used very universally due to its high resistance to aggressive media.

The KNF self-drying system allows condensed liquid to be blown out of the pump heads at a high speed during evacuation. The drying cycle can be adjusted to the requirements of the individual process using three variables.

The KNF UN840.3FT.40P IP44-T Diaphragm Pump Diaphragm Pump Diaphragm Pump is chemical-resistant, therefore suitable for highly aggressive or corrosive gasses and vapors. This pump is 115V.

The KNF UN840.3FT.40P IP44-T Diaphragm Pump includes:
  • Power Cord
  • Operator's Guide
  • Manufacturer's Documentation
  • 1 Year Manufacturer's Warranty

KNF UN840.3FT.40P IP44-T Diaphragm Pump Specifications

Max. Permissible Operating Pressure

(bar g)


Ultimate Vacuum (mbar abs.)


Delivery Rate at atm. Pressure (l/min)


Hose Connection (mm)

ID 10

Permissible Ambient Temperature

Permissible Media Temperature

+ 5 °C to + 40 °C

+ 5 °C to + 40 °C

Maximum Permissible

Ambient Relative Humidity

80 % for temperatures up to 31 °C,

decreasing linearly to 50 % at 40 °C

Max. Altitude of site

(m above sea level)


Weight (kg)

Dimensions (L x H x W) (mm)


341 x 239 x 189

Protection Class Motor






Frequency (Hz)




Max. operating current (A)




Power consumption pump (W)




Max. permitted mains voltage


+/- 10 %

+/- 10 %

+/- 10 %

Fuse pump**
(2x) T (A)




Why Buy From Marshall Scientific?

Marshall Scientific's primary goal is to enhance your laboratory research at a more affordable price. Our industry-trained customer service team is always here to assist you along every step of your purchase, from initial product questions to technical support, and everything in-between. With our connection to some of the industry’s largest manufacturers, we can ensure you receive the lowest price without sacrificing quality whatsoever.

Brand-New Products for Far Less than Retail

Most Pieces Ship within 2 to 5 Business Days

All Products are Fully Warrantied

Trained Customer and Technical Support

Industry Leading Overall Customer Satisfaction

Bausch + Lomb
Working with Marshall Scientific was overall an enjoyable experience. Their customer service really helped me choose the product that fit my needs, and checking out was easier than I expected. Shipping was faster than expected which was also a plus!
James M. / Bausch + Lomb
I have purchased a few items from Marshall Scientific over the years and I have always had great experiences with both the products and the customer support. Chat feature definitely makes both communicating and navigating easier. I would recommend this company to a colleague.
Lila B. / Caltech
I just received the two Polyscience chillers I ordered through your ecommerce store and I couldn't be happier with my purchase. Customer service was instrumental in helping me choose the correct model. Thanks again!
Nora F. / Sanofi
Click Here to View Our Other Testimonials →

Share your knowledge of this product. Be the first to write a review »

Browse for more products in the same category as this item:

Vacuum Pumps
Vacuum Pump Type > Diaphragm Pumps
Ultimate Vacuum > 1 to 10 mbar
Vacuum Pump Type
Ultimate Vacuum
Brand > KNF