KNF corrosion-resistant process industry pumps with explosion-proof motors offer safe solutions for handling aggressive gas or liquid media. KNF gas and liquid diaphragm pumps offer high performance and long service life during continuous, heavy-duty operation.
Gas and Liquid Pumps for Hazardous Locations (NEC/CEC HazLoc)
Class 1 Div 1 pumps
For use in hazardous locations (HazLoc). Ideal for safety-critical applications, these durable diaphragm gas and liquid pumps feature UL and CSA approved, ex-proof motors compliant for NEC Class 1, Division 1, Groups C & D, and Division 2, Groups A, B, C, D. Additionally, KNF offers ATEX-approved liquid and gas pumps for the transport of flammable/explosive media in hazardous locations.
FAQ - Selecting a Pump for Hazardous Locations
Explosion Proof Diaphragm Pumps and Compressors for Industrial Processes
KNF industrial process diaphragm pumps with explosion proof motors, in several series, can achieve flows up to 300 L/min, vacuums to 29.86 in. Hg, and pressures to 176 psig, depending on model. All process pumps are designed to minimize power requirements and reduce costs, operate oil-free (to eliminate media contamination and maintenance), run without sliding seals, and incorporate precision ball bearings for optimized reliability.
Users may choose from 3-types of head configurations:
~ single-stage for moderate performance
~ two-stage for deeper vacuum
~ parallel-head for higher flow
These head configuration options, in addition to various combinations of materials and coatings, allow each customer to realize application-specific benefits. KNF also offers gas process industry pump models which are ATEX-compliant and certified in accordance with the 2014/34/EU directive on equipment and protective systems.
Shown here is the UN 035.3 STI EX pump, manufactured in the KNF USA production center.
Explosion Proof Transfer Pumps
Our liquid handling diaphragm pumps are simple in design, durable, and perform their function without the need for flexible tubing or compressed air with their associated drawbacks. These liquid pumps are excellent for either vacuum or pressure applications. They are ideal for low viscosity liquids and can be run dry continuously, without degradation and under the most severe operating conditions without external leakage.
KNF NF 1.300 and NF 1.600 series liquid pumps offer safe transfer of explosive and hazardous liquids for chemical processing, petrochemical refining, and safety-critical applications. Self-priming up to 10 ft H2O, the pumps boast a pressure of 88 psig, flow rates up to 6 L/min, and are powered by 115/230V 60Hz single phase, UL and CSA approved motors. Contamination and maintenance-free, both models are available in corrosion-resistant versions.
Shown here is the NF 1.600 HazLoc Custom Project Pump
NEC / HazLoc Pumps
Exproof Pump Applications
Flow: up to 300 l/min
Pressure: up to 176 psig
Vacuum: down to 29.86 inHg
Flow: up to 6 l/min
Pressure: up to 88 psig
Suction: 10 ft H20
Flow: up to 220 L/min
Pressure: up to 58 psig
Vacuum: down to 29.74 inHg
Flow: up to 6 L/min
Pressure: up to 88 psig
Suction: Up to 10 ft H2O
Oil & Gas
Finishes, coatings & alloys
Custom mounting plates
Leak tight performance