Type Y & Z Pressurization Unit Overview

NFPA 496 Type Y & Z Enclosure Pressurization Units

NFPA 496 Type Y & Z
Pressurization Units

Overview

Best Purging Systems Type Y & Z Pressurizing Units are intended to protect electrical equipment inside Class I enclosures up to 2 cubic feet and Class II enclosures up to 250 feet. Best Model series YZ101 operates by supplying compressed air or inert gas within an enclosure to a pressure that prevents the entrance of flammable gas and combustible dust. This method provides protection regardless of configuration, power requirements, or location of the protected equipment.

When used for Type Y applications, these Pressurization Units allow Division 2 / Zone 2 rated equipment to operate in Division 1 / Zone 1 hazardous areas. These units reduce the classification within the protected enclosures from Division 1 / Zone 1 to Division 2 or Zone 2.

When used for Type Z applications, these Pressurization Units allow nonclassified equipment to operate in Division 2 / Zone 2 hazardous areas. These units reduce the classification within protected enclosures from Division 2 / Zone 2 to Unclassified. Best of all, they’re designed to meet or exceed NEC – NFPA 70, NFPA 496, EN 50016 and IEC 60079-02 requirements.

Type Y & Z Purge Units protect delicate equipment against combustion, heat, moisture, dust build-up and corrosion. Best Purging Systems offer the safest and most economical means of installing electrical equipment in hazardous locations, eliminating the need for explosion-proof boxes and intrinsic safety barriers. Best of all, they’re designed to meet or exceed NEC – NFPA 70, NFPA 496, EN 50016 and IEC 60079-02 requirements!

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America's Best NFPA 496 Type Y & Z Enclosure Pressurization Units

Pressurization Unit Product Line
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Universal Mount

Less Pressure Loss Alarm Switch for
Left, Right, Top, or Bottom Side or Panel Mounting

Model 101A

Type Y & Z Purging & Pressurization Unit
Class I: 2 CF Maximum / Class II: 10 CF Maximum

Vertical Mount

With Pressure Loss Alarm Switch for
Left or Right Side Mounting

Universal Mount

Less Pressure Loss Alarm Switch for
Left, Right, Top, or Bottom Side or Panel Mounting

Model 101B

Type Y & Z Pressurization Unit
Class II: 50 CF Maximum

Vertical Mount

With Pressure Loss Alarm Switch for
Left or Right Side Mounting

Universal Mount

Less Pressure Loss Alarm Switch for
Left, Right, Top, or Bottom Side or Panel Mounting

Model 101C

Type Y & Z Pressurization Unit
Class II: 250 CF Maximum

Vertical Mount

With Pressure Loss Alarm Switch for
Left or Right Side Mounting