KNF UN840.3FTP IP44 Diaphragm Pump is
dry-running device used in a wide range of laboratory
applications. They transfer, compress and pump down without contamination. The
heart of these very compact pumps is a KNF structured diaphragm. This patented
diaphragm 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 the
diaphragm. This pump is 115V.
Delivery rate at atm. Pressure
Hose connection (mm)
+ 5 °C to + 40 °C
ambient relative humidity
80 % for temperatures up
to 31 °C, decreasing linearly to 50 % at 40 °C
Maximum Altitude of site
(above sea level)
341 x 226 x 166
Protection Class Motor
Maximum Current Consumption (A)
Power Consumption Pump (W)
Maximum permitted mains voltage fluctuation
+/- 10 %
(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
Unparalleled Customer Service
Our trained support staff will be able to answer all of your product related questions. Our phone lines are open every weekday from 9-5pm EST.