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PIAD Description Model PIAD

Model PIAD Purgeable Instrument Access Doors are custom built Purgeable Instrument
doors with mounting frames manufactured to meet or exceed
NEMA 12 (IP 52) or NEMA 4 or 4X (IP 56) ratings. Access Doors
They are intended for any application, and come in an array of
sizes and features, manufactured to your exact specifications. Our
PIADs are designed to cover electrical devices which penetrate For Panel or Surface Mounted Devices in Purged,
the surface of an enclosure and are unsuitable for exposure to
the surrounding corrosive, hazardous or classified atmosphere. Pressurized, Outdoor or Corrosive Area Enclosures
Designed for rugged duty, all Best Purging Systems PIADs feature
14 gauge carbon steel or 304 or 316 grade stainless steel mounting Technical Bulletin PIAD TB-R2 © 03.20.2021
frames and doors, removable stainless steel hinges,1/4” Laminated
Safety Glass, Lexan™ Margard™ MR-10 or Wire Reinforced
Safety Glass windows with a proprietary shock-resistant mounting
system, and replaceable, life-time warranty door gasket, with an
NFPA 496 purged enclosure warning nameplate, mounting sealant
and mounting hardware.
Standard finishes include vertical or horizontal brush finishes for
the stainless steel mounting frame and door materials or a black
or custom color powder coat finish on any material. Door fastening
options include hand, key or tool actuated vice action compression
latches in black polyester powder coated die cast zinc or electro-
polished 316 grade stainless steel materials.
NEMA 12
Rating
PIAD NEMA Ratings

Purgeable Instrument Access Doors from Best Purging Systems
Corporation are manufactured to meet or exceed NEMA 12, 4 or
4X and corresponding IP Ratings, as noted below. These ratings
satisfy increasingly harsh indoor or outdoor applications, along
with exposures to rain, wash-down and corrosive chemicals.
NEMA Material Options & IP
Rating Resistance Parameters Rating
12 14 Gauge Carbon Steel 52
PIAD constructed for indoor use to provide a degree of protection
to personnel against incidental contact with the enclosed equipment
and to provide a degree of protection against the ingress of dust, dirt,
and dripping non-corrosive liquids, oil and lubricants. Furnished complete with
12 14 Gauge 304 or 316 Grade 52 Installation Manual, NFPA
Stainless Steel Purged Enclosure Warning
PIAD constructed for indoor use to provide a degree of protection Nameplate, Sealant &
to personnel against incidental contact with the enclosed equipment; Mounting Hardware!
to provide a degree of protection against the ingress of dust, dirt,
and dripping non-corrosive liquids, oil and lubricants, and to resist
damage caused by exposure to atmospheres containing
corrosive gases, dusts or vapors. *
4 14 Gauge Carbon Steel 56
PIAD constructed for indoor or outdoor use to provide a degree of NEMA 4 & 4X
protection to personnel against incidental contact with the enclosed
equipment; to provide a degree of protection against falling dirt, Ratings
rain, sleet, snow, windblown dust, splashing water, and
hose-directed water; and that will be undamaged
by the external formation of ice on the PIAD.
4X 14 Gauge 304 or 316 Grade 56
Stainless Steel
PIAD constructed for indoor or outdoor use to provide a degree of
protection to personnel against incidental contact with the enclosed
equipment; to provide a degree of protection against falling dirt,
rain, sleet, snow, windblown dust, splashing water,
hose-directed water and corrosion; and that will be
undamaged by the external formation of ice on the PIAD.
* IMPORTANT NOTE Shown with custom
The stainless steel material option for corrosive atmosphere resistance is an
enhancement by Best Purging Systems Corporation to the published National door positioning
Electrical Manufacturers Association definition for a NEMA 12 rating.
hardware!

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