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Simplifying Complexity. Delivering Safety.
Simplifying Complexity.
Delivering Safety.

Room Pressurization Systems RP-Max

Certified solutions for the pressurization of drillers cabins and analyser houses


  • Meets NFPA Class I Div.2 & ATEX Zone 2 standards
  • Ventilation capacity up to 4,700 m3/hr
  • Dual redundant fan option
  • Roof, wall and in-line mounting options

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  • Description
  • Specifications
  • Downloads
  • Certificates
  • Manuals


Expo’s RP-Max-Z room pressurization systems are designed for type Z / Ex pz pressurization in accordance with NFPA496 and ATEX  for Class I Div 2 and Zone 2 hazardous areas, making the interior of the room a general-purpose location.

Systems are self-contained units incorporating high flow fan units, filtration, pressure measurement and control.

Depending on the application, RP-Max-Z systems are available for single or two-door rooms, with one or two fans. Incoming air, from a non-hazardous location, is brought via ducting to the unit. Depending on local regulations or project specifications, the air inlet may be equipped with gas detection or a fire damper.

Read more here in our whitepaper:"Global Compliance of Rooms in Hazardous Areas"



Air flow capacity
Single door room – up to 3,000 m3/hr
Two-door room - up to 4,700 m3/hr
Power supply
1ph 230/240V 50/60Hz
3ph 400/480V 50/60Hz
Operating temperature limits
-20°C to +40°C
Materials of construction
Polyester powder coated mild (carbon) steel. (316 stainless steel as optional)
System inputs
Fan Shut Down e.g. from gas detection
Forced High Flow e.g. to clear gas
System outputs
Low pressure alarm
System fault
Audible alarm.