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Building Purge & Pressurization Systems

NFPA-496 Compliant Stand Alone Purge & Pressurization Equipment

It is important to maintain an atmosphere inside a building that is conducive to allowing equipment to operate effectively. Specific Systems® InPac® PPUs are designed and manufactured to provide those necessary interior conditions.

Engineered and proven to stand up to the rigors and harsh conditions of corrosive and hazardous environments
Built to demanding industrial specifications
Features corrosion resistant coatings and available fan redundancy for efficiency and to avoid downtime
When combined with a stack package, can reduce the hazardous (classified) area rating within the room from Class I, Div. 1 or 2 to non-hazardous (classified)
Available in configurations up to 12000 CFM
Controls to automatically purge and pressurize the building

Configurable Building Pressurization to Reduce Contaminants

Custom-engineered and built-to-order for each customer using a time-proven assembly method

Available for use in hazardous locations up to Class I, Division 1, Groups C, & D locations, as well as Class I, Division 2, Groups B, C, & D
Standard through the wall-mounting configuration
Also configurable in Wall Mount, Pad Mount, or Roof Mount, using the same components for reduced lifetime costs
Built to demanding industrial specifications
Available corrosion resistant coatings and many other options
CSA certification, UL Listed panels, with ATEX and IECEX certification available.

Product Categories

Do you need Purge and/or Pressurization on your building?

When determining the need for a purge and pressurization system, three key characteristics of the area must be taken into account:
size and classification of the area to be pressurized, and power requirement to the area.

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Built for Safety

In the US and some other regions of the world that use the NEC, regulations call for NFPA 496-compliant purge and pressurization (type X, Y, or Z) to be used to initiate and keep the building free of hazardous gases. In other countries, IEC or ATEx standards require similar types of pressurization. When you purchase a Specific Systems® PPU, you can be sure it meets those regulatory demands.

When we build your purge and pressurization systems, we only use industrial-grade, hazardous location rated components that are certified for use in those applications

NEMA-7 electrical boxes provide time-tested protection and containment
UL Listed motors ensure conformance to stringent NFPA safety standards
AMCA 99-0401 conforming spark-resistant fans
Solid-state electrical components where necessary
UL 508A electrical panel design limits access to high voltage components and ensures

Built for Industry

We don't skimp on quality components. Our explosion proof building pressurization units include as standard what many others consider modifications or special features. Specific Systems® products are industrial duty by design.

Cabinet manufactured from minimum 16-gauge hot-dipped galvanized steel, with optional stainless steel or aluminum
4-mil TGIC powdercoating on galvanized steel and aluminum cabinet components, with coating applied prior to assembly
All stainless steel fasteners
ABB Baldor explosion proof evaporator and condenser motors
Explosion proof modulating damper motors*

Built for Service

There's a saying in mechanical engineering: "If it moves, it will break."

While some companies build systems that are easy to assemble, that doesn't necessarily translate to easy to repair. At Specific Systems, we know downtime causes lost money, so we design our purge and pressurization systems to be serviced in the field quickly and efficiently.

Hinged and/or removable access panels
Modular design for efficient component removal
Loomed and labeled wires avoids the bird's nest of wiring often found in commercial systems
Loomed and labeled wires avoids the bird's nest of wiring often found in commercial systems

Available in general purpose and explosion proof configurations
Up to 12,000 CFM of purge air to maintain minimum pressure of 0.1in w.c.
Industrial grade motor and direct drive blowers
Industry standard voltage configurations, including: 480V 3ph 60Hz; 575V 3ph 60Hz; 380V 3ph 50Hz

NFPA 496-compliant to type X, Y, or Z purge
16-gauge hot-dipped galvanized steel cabinet
Small unit footprint requires minimal maintenance clearance
Wired for high level, low level, and fail using Form C contacts, allowing remote notification of alarms

*Explosion proof modulating damper motors used only in situations where where required by statute, regulation, certification, or specification

Literature Library

Browse through data sheets and information for our standard HVAC systems, including electrical data and preliminary general arrangement drawings.

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Parts, Service, and Support

Looking for parts and/or service for a Specific Systems unit on your site? Give us a call at (918) 663-9321 or click below to send in your request.

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Industrial HVAC

Wall Mount HVAC

Purge/Pressurization

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Building Purge & Pressurization Systems

Building Purge & Pressurization Systems

NFPA-496 Compliant Stand Alone Purge & Pressurization Equipment

Configurable Building Pressurization to Reduce Contaminants

Custom-engineered and built-to-order for each customer using a time-proven assembly method

Product Categories

Do you need Purge and/or Pressurization on your building?

Built for Safety

Built for Industry

Built for Service

Literature Library

Parts, Service, and Support

Products

Company Info

Contact Info

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