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Y Purge: Inert gas or compressed air purge

Install Class I Div 2, Zone 2 certified  electrical equipment in a Zone 1 or Class I Division 1 hazardous area. Y Purge units:

  • Feed a continuous flow of compressed air or inert gas through the enclosure to purge hazardous gases;
  • Monitor the compressed air or inert gas outflow, not the inflow, to ensure hazardous gases are indeed purged from the enclosure, then,
  • Maintain a positive pressure to prevent hazardous gas entering the enclosure.

There are two types of Y Purge:

  • Continuous Flow (CF): operates by:
    • A continuous flow of inert gas or compressed air purges hazardous gases from the enclosure, then,
    • Without changing the inflow air pressure, maintains a positive pressure to prevent hazardous gas creeping into the enclosure.
  • Leakage Compensation (LC) improves equipment uptime, and reduces running costs. It operates by:
    • Initially providing high air or inert gas volumes to rapidly purge hazardous gas from the enclosure;
    • Then providing low air or inert gas volumes,  sufficient to maintain a higher pressure inside the enclosure than the surrounding hazardous area, and to compensate for leaks from the enclosure.

There are two mounting options

  • Panel Mount (PM) Fits directly onto the enclosure requiring minimal external space.
  • Back Plate Mounting (BP): Mounts either directly onto the outside or remote from the enclosure.

  • 1YCF/BP/IS

    Air or inert gas, Y Purge & Pressurization unit for enclosures to 17 cu.ft, 0.39 cu.m, Continuous Flow, Back Plate Mounting, Ex i Integral Signal for Class I Div 2, Zone 2 rated equipment in Class I Div1, Zone 1 location.  1YCF/BP/IS
    Purge Type Y inert gas or air purge
    Area: Class I Div 1 Zone 1 Equipment: Class I Div 2
    Group II Zone 2
    Purging Action Continous Flow Same flow rate during and after purge
    Enclosure Size up to 17 cu ft up to 0.39m3
    Mounting Style Back plate Mounts externally on the enclosure wall. Minimal piping.
    Alarm Output Integral Switch – IS or NI Volt free, Dry contact
    read more
  • 1YCF/PM/IS

    Air or inert gas Y Purge & Pressurization unit for 17 cu.ft, 0.39 cu.m enclosures, Continuous Flow Purge, Panel Mounting, for Class 1 Div 2, Group II Zone 2 rated equipment in Class 1 Div 1, Zone 1 location1YCF/PM/IS
    Purge Type Y inert gas or air purge
    Area: Class I Div 1, Zone 1 Equipment Content: Class I Div 2
    Group II Zone 2
    Purging Action Continous Flow Same flow rate during and after purge
    Enclosure Size up to 17 cu ft up to 0.39m3
    Mounting Style Panel Mount Mounts externally through the enclosure wall. Minimal piping.
    Alarm Output Integral Switch – IS or NI Volt free, Dry contact
    read more
  • 1YLC/BP/IS

    Y Purge unit, inert gas or compressed air purge for enclosures to 240 cu.ft, 5.4 cu.m, Leakage Compensation, Back Plate Mounting, Ex i Integral Signal for Class 1 Div 2, Zone 2 rated equipment in Class 1 Div 1, Zone 1 location.1YCF/BP/IS
    Purge Type Y inert gas or air purge
    Area: Class I Div 1, Zone 1 Equipment Content: Class I Div 2
    Group II Zone 2
    Purging Action Leakage Compensation High flow rate during purge. Then compensation for leakage
    Enclosure Size up to 60 cu ft up to 1.35m3
    Mounting Style Back plate Mounts externally on the enclosure wall. Minimal piping.
    Alarm Output Integral Switch – IS or NI Volt free, Dry contact
    read more
  • 1YLC/PM/IS

    Y Purge unit. Inert gas or air purge. Leakage Compensation, Panel Mount, For enclosures to 60 cu.ft, 1.35 cu.m,  Ex i Integral Signal for Class 1 Div 2, Zone 2 rated equipment in Class 1 Div1, Zone 1 location. 1YCF/PM/IS
    Purge Type Y inert gas or air purge
    Area: Class I Div 1, Zone 1 Equipment Content: Class I Div 2
    Group II Zone 2
    Purging Action Leakage Compensation High flow rate during purge.
    Then compensation for leakage
    Enclosure Size up to 60 cu ft up to 1.35m3
    Mounting Style Panel Mount Mounts externally through enclosure wall. Minimal piping.
    Alarm Output Integral Switch – IS or NI Volt free, Dry contact
    read more