KNF Coal Mine Sample Extraction pump Class I, Div I, Group C & D and ATEXExplosion Proof Pumps

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A collection of technical articles on diaphragm pumps

Datasheets are available for downloading, viewing and printing in the Acrobat PDF format by clicking on the pump model number below. Information on how to obtain the free Adobe reader is available HERE.

Pump Series (Click for Databook)	Motor Class	Flow Rate LPM	Flow Rate CFM	Max Vacuum (rel) in. Hg	Max Pressure psig
Download DATABOOK (PDF:8 mb/8pg) documents the following group of pumps: Motor wiring diagrams supplement
Solid PTFE
UN726FTI (EX)	C and D	17	.6	27.95	20
UN726.3FTI (EX)	C and D	17	.6	29.7	-
UN726.1.2FTI (EX)	C and D	30	1.1	27.95	20
UN860FTI (EX)	C and D	60	2.2	27.6	15
UN860.3FTI (EX)	C and D	60	2.2	29.86	16
UN860.1.2FTI (EX)	C and D	110	3.9	27
316 Stainless Steel/PTFE
UN026STI (EX)	C and D	17	.6	26.9	6
UN726STI (EX)	C and D	17	.6	28.55	-
UN726.3STI (EX)	C and D	17	.6	29.7	-
UN026.2STI (EX)	C and D	31	1.1	26.8	29
UN035STI (EX)	C and D	29.2	1.03	27	60
UN035.3STI (EX)	C and D	29.2	1.03	29.5	-
UN035.1.2STI	C and D	56.1	2	27	60
Aluminum
UN026ANI (EX)	C and D	25	.9	26.9	36
UN726ANI (EX)	C and D	20	.7	28.55	-
UN726.3ANI (EX)	C and D	20	.7	29.77	-
UN026.2ANI (EX)	C and D	46	1.62	27	29
PVDF coated Aluminum
UN035TTI (EX)	C and D	32.5	1.15	27	50
UN035.3TTI (EX)	C and D	32.5	1.15	29.5	-
UN035.1.2TTI (EX)	C and D	62.3	2.2	27	50
Please Note: Diaphragm pumps conforming to 94/9/EC (ATEX) Group II, Categories 2G and 3G are also available. Contact KNF applications engineers for further information on ATEX compliant pumps.

Designed for coal mine sampling

Model UN026.1.2ANI (EX) at left is being used for coal mine sampling.

Designed for Coal Mine Sample Extraction

With the US Emergency Temporary Standards now in effect, many coal mines are choosing to design automated sampling and analysis systems to monitor and record methane and oxygen concentrations in abandoned mine shafts. This cost-effective method will eliminate shutdowns due to false readings, conserve precious manpower, and guarantee the safety of mine employees.

KNF's robust pumps for hazardous locations are the dependable solution for your sampling needs. More info:

All-PTFE Wetted Parts for Premium Corrosion Resistance

KNF's corrosion-resistant N726.3FTI shown at left with our new, economical, UL listed Class I, Div I, Group C and D and ATEX explosion-proof AC motor. Designed for continuous, heavy-duty use, 100% ball bearings are used throughout to provide exceptional reliability in the industrial environment. Most models are fitted with a pre-wired connection box and are tested and ready to install in your system.
Contact us for details on our ATEX compliant pumps.

KNF's model N860 series solid-PTFE pumps increases the explosion-proof product range to 110 LPM (3.9 CFM). The series is available in three head configurations: single head, two-stage for deep vacuum, and parallel-head (shown at left) for high flow requirements. Utilizing KNF's patented, multi-port valve design, they can handle occasional condensate without loss of performance. These pumps reach up to 29.86 in. Hg using only two heads, saving space, power requirements and cost of ownership.

Unit Conversion Tools:

NOTES: Standard continuous performance ratings listed on this KNF website and on KNF datasheets are based on technical data and test results of nominal units at sea level, measured with an ambient temperature of 70°F (21°C), and nominal electrical supply as listed above, and are for reference only.Multiple-head models, different performance models, cost-effective OEM modifications, and a variety of motor options and different materials of construction are also available. Certified drawings are available upon request. Specifications subject to change without notice. You should always check corrosion resistance charts for compatibility with the medium you intend to pump.

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Trenton, New Jersey 08691-1810
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