N 630 Ex Explosion-proof Pump Series
Higher Performance, Extended Service Life, CE Marking
KNF developed its first Ex pump series in the 1970s, the N 143 Ex and N 186 Ex. Both have been replaced by the N 630 Ex series, which offers impressive performance and a range of useful features.
Features & Benefits
These are the main advantages of the N 630 Ex explosion-proof pump series:
- High chemical resistance
- Durable even with difficult operating conditions
- High level of gas tightness up to 5 x 10-5 mbar x l/s as a standard
- N 630.15 Ex version: High level of gas tightness up to 6 x 10-3 mbar x l/s as a standard
- Flameproof motor with intrinsically safe terminal box for simple installation
- Explosion protection three-phase motor: Ex II 2G Ex de IIC T4 Gb
- Explosion protection pump parts: Ex II 2G Ex h IIB+H2 T3 Gb
Explosion Protection Designation
The N 630 Ex explosion-proof series pumps have the explosion protection designation Ex II 2/2G Ex h IIB+H2 T3 Gb:
Ex
| Symbol for explosion-proof pumps
| -
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II
| Device group
| Device group II applies for devices that are used in other areas that could be endangered by an explosive atmosphere.
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2/2G
| Device category
| Devices that extract from zone 1 and are designed for use in areas in which it is to be expected that an explosive atmosphere consisting of gases, vapors or mists forms occasionally.
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Ex
| Symbol
| Symbol indicates that the device complies with one or more ignition protection types
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h
| Symbol for ignition protection type
| An ignition hazard assessment in accordance with standards DIN EN ISO 80079-36 and DIN EN ISO 80079-37 was performed for the pumps. The protective goals were reached by applying ignition protection type constructional safety "c".
| ||||||||||||||||||||
IIB + H2
| Explosion groups
|
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T3
| Temperature class
| Max. surface temperature: 200 °C Ignition temperature: > 200 °C
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Gb
| Equipment protection level
| Devices with high protection level for use in potentially explosive areas in which there is no risk of ignition during normal operation or in th event of foreseeable or infrequent faults/malfunctions. Constructional safety: High. |
The Right Fit for Your Need
The N 630 Ex is available with either one or two heads and a serial or parallel connecting system as a vacuum pump or compressor. All four versions are outfitted with PTFE-coated diaphragms as standard, while EPDM is also available.
Familiarize yourself with the technical details of our N 630 Ex explosion-proof pump series:
N 630 Ex – One-headed Vacuum Pump and Compressor
Flow Rate (max.): 35 l/min
Operating Pressure (max.): 4 bar (rel.)
Ultimate Vacuum (max.): 120 mbar (abs.)
N 630.15 Ex – Two-headed Compressor with Series Connections
Flow Rate (max.): 35 l/min
Operating Pressure (max.): 9 bar (rel.)
Ultimate Vacuum (max.): 70 mbar (abs.)
N 630.3 Ex – Two-headed Vacuum Pump with Series Connections
Flow Rate (max.): 35 l/min
Operating Pressure (max.): 0.5 bar (rel.)
Ultimate Vacuum (max.): 25 mbar (abs.)
N 630.1.2 Ex – Two-headed Compressor with Parallel Connections
Flow Rate (max.): 68 l/min
Operating Pressure (max.): 4 bar (rel.)
Ultimate Vacuum (max.): 120 mbar (abs.)
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