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UL Listed NFPA 496 Type Y & Z Electrical Enclosure Purging and Pressurization Systems America's Best UL Listed NFPA 496 Type Y & Z Electrical Enclosure Purging & Pressurization Systems
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Purging & Pressurization Unit Cross-Over Guide
for Directly Compatible Replacement

Model 1001A, Model 1001B Model 1001C, Model 1002, Model 1003 & Model 1004 NFPA 496 UL Listed Best Purging and Pressurization Units Compatability Guide

We're honored to be your primary source for enclosure purging and pressurization units, and pledge to offer the most
exceptional quality, service and sales advantages.

Please open the drop-down charts below each Model to see
the Model Numbers of Units from other Manufactures
they can easily replace.

In addition, feel free to contact us for more
information regarding your specific needs.

Get the Best Solution here!

 
Best Model 101A - Compatible to Pepperl+Fuchs Model 1001A and Bebco EPS Model 1001A Applications Configurations
Class I Areas
Enclosures Volume
not exceeding 2 Cubic Feet


Class II Areas
Enclosures Volume
not exceeding 10 Cubic Feet

Universal Mount
(excluding pressure switch)
Left, Right, Top, Bottom
or Panel Mounting
Horizontal Mount
(including pressure switch)
Top or Bottom Mounting


Vertical Mount
(including pressure switch)
Left or Right Mounting
 


Best Purging Systems
Corporation
Pepperl+Fuchs
Bebco EPS
®
(circa 2003-Present Day)
Bebco Industries
EPS Division

(circa 1990-2003)
Bebco Industries
EPS Division

(circa 1985-1989)
D & M
Instruments

(circa 2003-2013)
Model YZ101A-CI/CII-L-U
Type Y & Z Universal Mount
Enclosure Pressurization Unit
(less pressure switch)
Model 1001A-LPS-CI-YZ-LH
Model 1001A-LPS-CI-YZ-RH
Model 1001A-LPS-CI-YZ-TM
Model 1001A-LPS-CI-YZ-BM
Model 1001A-LPS-CI-YZ-PM

Model 1001A-LPS-CII-YZ-LH
Model 1001A-LPS-CII-YZ-RH
Model 1001A-LPS-CII-YZ-TM
Model 1001A-LPS-CII-YZ-BM
Model 1001A-LPS-CII-YZ-PM
Model 101A-LPS-CI-YZ-LH
Model 101A-LPS-CI-YZ-RH
Model 101A-LPS-CI-YZ-TM
Model 101A-LPS-CI-YZ-BM
Model 101A-LPS-CI-YZ-PM

Model 101A-LPS-CII-YZ-LH
Model 101A-LPS-CII-YZ-RH
Model 101A-LPS-CII-YZ-TM
Model 101A-LPS-CII-YZ-BM
Model 101A-LPS-CII-YZ-PM
Model YZ-101-CI/CII-L-U
Model YZ101A-CI/CII-W-H
Type Y & Z Horizontal Mount
Enclosure Pressurization Unit
(with pressure switch)
Model 1001A-WPS-CI-YZ-TM
Model 1001A-WPS-CI-YZ-BM

Model 1001A-WPS-CII-YZ-TM
Model 1001A-WPS-CII-YZ-BM
Model 101A-WPS-CI-YZ-TM
Model 101A-WPS-CI-YZ-BM

Model 101A-WPS-CII-YZ-TM
Model 101A-WPS-CII-YZ-BM
Model YZ-101-CI/CII-W-H
Model YZ101A-CI/CII-W-V
Type Y & Z Vertical Mount
Enclosure Pressurization Unit
(with pressure switch)
Model 1001A-WPS-CI-YZ-LH
Model 1001A-WPS-CI-YZ-RH

Model 1001A-WPS-CII-YZ-LH
Model 1001A-WPS-CII-YZ-RH
Model 101A-WPS-CI-YZ-LH
Model 101A-WPS-CI-YZ-RH

Model 101A-WPS-CII-YZ-LH
Model 101A-WPS-CII-YZ-RH
Model YZ-101-CI/CII-W-V
Group B, C & D Pressure Switch Options
-24 (24 VDC), -120 (120 VAC) or -240 (240 VAC)
added as last segment to Horizontal or Vertical
Mount Unit Model Numbers to feature
Group B, C & D rated Pressure Switches


Example: YZ101A-CI/CII-W-H-24
"WPS" replaced by "WPSA" to feature
Group B, C & D rated Pressure Switch, and
-24VDC, -120VAC or -240VAC added as last
segment to indicate Powered Contact Voltage

Example: 1001A-WPSA-CI-YZ-TM-24VDC
Group B, C & D rated
Pressure Switches were not
available while these Products
were manufactured
"W" replaced by "B" to feature
Group B, C & D rated 120 VAC
Pressure Switch on Models with
W-H and W-V suffixes

Example: YZ-101-CI/CII-B-V
Obsolete  Highlighted fields indicate Products that are discontinued or no longer manufactured
 
Best Model 101B - Compatible to Pepperl+Fuchs Model 1001B and Bebco EPS Model 1001B Applications Configurations
Class II Areas
Enclosures Volume
not exceeding 50 Cubic Feet

Universal Mount
(excluding pressure switch)
Left, Right, Top, Bottom
or Panel Mounting
Horizontal Mount
(including pressure switch)
Top or Bottom Mounting


Vertical Mount
(including pressure switch)
Left or Right Mounting
 


Best Purging Systems
Corporation
Pepperl+Fuchs
Bebco EPS
®
(circa 2003-Present Day)
Bebco Industries
EPS Division

(circa 1990-2003)
Bebco Industries
EPS Division

(circa 1985-1989)
D & M
Instruments

(circa 2003-2013)
Model YZ101B-CI/CII-L-U
Type Y & Z Universal Mount
Enclosure Pressurization Unit
(less pressure switch)
Model 1001B-LPS-CI-YZ-LH
Model 1001B-LPS-CI-YZ-RH
Model 1001B-LPS-CI-YZ-TM
Model 1001B-LPS-CI-YZ-BM
Model 1001B-LPS-CI-YZ-PM

Model 1001B-LPS-CII-YZ-LH
Model 1001B-LPS-CII-YZ-RH
Model 1001B-LPS-CII-YZ-TM
Model 1001B-LPS-CII-YZ-BM
Model 1001B-LPS-CII-YZ-PM
Model 101B-LPS-CI-YZ-LH
Model 101B-LPS-CI-YZ-RH
Model 101B-LPS-CI-YZ-TM
Model 101B-LPS-CI-YZ-BM
Model 101B-LPS-CI-YZ-PM

Model 101B-LPS-CII-YZ-LH
Model 101B-LPS-CII-YZ-RH
Model 101B-LPS-CII-YZ-TM
Model 101B-LPS-CII-YZ-BM
Model 101B-LPS-CII-YZ-PM
Model YZ-101-CI/CII-L-U
Model YZ101B-CI/CII-W-H
Type Y & Z Horizontal Mount
Enclosure Pressurization Unit
(with pressure switch)
Model 1001B-WPS-CI-YZ-TM
Model 1001B-WPS-CI-YZ-BM

Model 1001B-WPS-CII-YZ-TM
Model 1001B-WPS-CII-YZ-BM
Model 101B-WPS-CI-YZ-TM
Model 101B-WPS-CI-YZ-BM

Model 101B-WPS-CII-YZ-TM
Model 101B-WPS-CII-YZ-BM
Model YZ-101-CI/CII-W-H
Model YZ101B-CI/CII-W-V
Type Y & Z Vertical Mount
Enclosure Pressurization Unit
(with pressure switch)
Model 1001B-WPS-CI-YZ-LH
Model 1001B-WPS-CI-YZ-RH

Model 1001B-WPS-CII-YZ-LH
Model 1001B-WPS-CII-YZ-RH
Model 101B-WPS-CI-YZ-LH
Model 101B-WPS-CI-YZ-RH

Model 101B-WPS-CII-YZ-LH
Model 101B-WPS-CII-YZ-RH
Model YZ-101-CI/CII-W-V
Obsolete  Highlighted fields indicate Products that are discontinued or no longer manufactured
 
Best Model 101C - Compatible to Pepperl+Fuchs Model 1001C and Bebco EPS Model 1001C Applications Configurations
Class II Areas
Enclosures Volume
not exceeding 250 Cubic Feet

Universal Mount
(excluding pressure switch)
Left, Right, Top, Bottom
or Panel Mounting
Horizontal Mount
(including pressure switch)
Top or Bottom Mounting


Vertical Mount
(including pressure switch)
Left or Right Mounting
 


Best Purging Systems
Corporation
Pepperl+Fuchs
Bebco EPS
®
(circa 2003-Present Day)
Bebco Industries
EPS Division

(circa 1990-2003)
Bebco Industries
EPS Division

(circa 1985-1989)
D & M
Instruments

(circa 2003-2013)
Model YZ101C-CI/CII-L-U
Type Y & Z Universal Mount
Enclosure Pressurization Unit
(less pressure switch)
Model 1001C-LPS-CI-YZ-LH
Model 1001C-LPS-CI-YZ-RH
Model 1001C-LPS-CI-YZ-TM
Model 1001C-LPS-CI-YZ-BM
Model 1001C-LPS-CI-YZ-PM

Model 1001C-LPS-CII-YZ-LH
Model 1001C-LPS-CII-YZ-RH
Model 1001C-LPS-CII-YZ-TM
Model 1001C-LPS-CII-YZ-BM
Model 1001C-LPS-CII-YZ-PM
Model 101C-LPS-CI-YZ-LH
Model 101C-LPS-CI-YZ-RH
Model 101C-LPS-CI-YZ-TM
Model 101C-LPS-CI-YZ-BM
Model 101C-LPS-CI-YZ-PM

Model 101C-LPS-CII-YZ-LH
Model 101C-LPS-CII-YZ-RH
Model 101C-LPS-CII-YZ-TM
Model 101C-LPS-CII-YZ-BM
Model 101C-LPS-CII-YZ-PM
n/a
Model YZ101C-CI/CII-W-H
Type Y & Z Horizontal Mount
Enclosure Pressurization Unit
(with pressure switch)
Model 1001C-WPS-CI-YZ-TM
Model 1001C-WPS-CI-YZ-BM

Model 1001C-WPS-CII-YZ-TM
Model 1001C-WPS-CII-YZ-BM
Model 101C-WPS-CI-YZ-TM
Model 101C-WPS-CI-YZ-BM

Model 101C-WPS-CII-YZ-TM
Model 101C-WPS-CII-YZ-BM
n/a
Model YZ101C-CI/CII-W-V
Type Y & Z Vertical Mount
Enclosure Pressurization Unit
(with pressure switch)
Model 1001C-WPS-CI-YZ-LH
Model 1001C-WPS-CI-YZ-RH

Model 1001C-WPS-CII-YZ-LH
Model 1001C-WPS-CII-YZ-RH
Model 101C-WPS-CI-YZ-LH
Model 101C-WPS-CI-YZ-RH

Model 101C-WPS-CII-YZ-LH
Model 101C-WPS-CII-YZ-RH
n/a
Obsolete  Highlighted fields indicate Products that are discontinued, not available or no longer manufactured
 
Best Model 102 - Compatible to Pepperl+Fuchs Model 1002 and Bebco EPS Model 1002 Applications Configurations
Class I Areas
Enclosures Volume
not exceeding 15 Cubic Feet
Universal Mount
(excluding pressure switch)
Left, Right, Top, Bottom
or Panel Mounting
Horizontal Mount
(including pressure switch)
Top or Bottom Mounting


Vertical Mount
(including pressure switch)
Left or Right Mounting
 


Best Purging Systems
Corporation
Pepperl+Fuchs
Bebco EPS
®
(circa 2003-Present Day)
Bebco Industries
EPS Division

(circa 1990-2003)
Bebco Industries
EPS Division

(circa 1985-1989)
D & M
Instruments

(circa 2003-2013)
Model YZ102-CI/CII-L-U
Type Y & Z Universal Mount
Enclosure Pressurization Unit
(less pressure switch)
Model 1002-LPS-CI-YZ-LH
Model 1002-LPS-CI-YZ-RH
Model 1002-LPS-CI-YZ-TM
Model 1002-LPS-CI-YZ-BM
Model 1002-LPS-CI-YZ-PM

Model 1002-LPS-CII-YZ-LH
Model 1002-LPS-CII-YZ-RH
Model 1002-LPS-CII-YZ-TM
Model 1002-LPS-CII-YZ-BM
Model 1002-LPS-CII-YZ-PM
Model 102-LPS-CI-YZ-LH
Model 102-LPS-CI-YZ-RH
Model 102-LPS-CI-YZ-TM
Model 102-LPS-CI-YZ-BM
Model 102-LPS-CI-YZ-PM

Model 102-LPS-CII-YZ-LH
Model 102-LPS-CII-YZ-RH
Model 102-LPS-CII-YZ-TM
Model 102-LPS-CII-YZ-BM
Model 102-LPS-CII-YZ-PM
Model YZ-103-CI/CII-L-U
Model YZ102-CI/CII-W-H
Type Y & Z Horizontal Mount
Enclosure Pressurization Unit
(with pressure switch)
Model 1002-WPS-CI-YZ-TM
Model 1002-WPS-CI-YZ-BM

Model 1002-WPS-CII-YZ-TM
Model 1002-WPS-CII-YZ-BM
Model 102-WPS-CI-YZ-TM
Model 102-WPS-CI-YZ-BM

Model 102-WPS-CII-YZ-TM
Model 102-WPS-CII-YZ-BM
Model YZ-103-CI/CII-W-H
Model YZ102-CI/CII-W-V
Type Y & Z Vertical Mount
Enclosure Pressurization Unit
(with pressure switch)
Model 1002-WPS-CI-YZ-LH
Model 1002-WPS-CI-YZ-RH

Model 1002-WPS-CII-YZ-LH
Model 1002-WPS-CII-YZ-RH
Model 102-WPS-CI-YZ-LH
Model 102-WPS-CI-YZ-RH

Model 102-WPS-CII-YZ-LH
Model 102-WPS-CII-YZ-RH
Model YZ-103-CI/CII-W-V
Group B, C & D Pressure Switch Options
-24 (24 VDC), -120 (120 VAC) or -240 (240 VAC)
added as last segment to Horizontal or Vertical
Mount Unit Model Numbers to feature
Group B, C & D rated Pressure Switches


Example: YZ102-CI/CII-W-H-24
"WPS" replaced by "WPSA" to feature
Group B, C & D rated Pressure Switch, and
-24VDC, -120VAC or -240VAC added as last
segment to indicate Powered Contact Voltage

Example: 1002-WPSA-CI-YZ-TM-24VDC
Group B, C & D rated
Pressure Switches were not
available while these Products
were manufactured
"W" replaced by "B" to feature
Group B, C & D rated 120 VAC
Pressure Switch on Models with
W-H and W-V suffixes

Example: YZ-103-CI/CII-B-V
Obsolete  Highlighted fields indicate Products that are discontinued or no longer manufactured
 
Best Model 103 - Compatible to Pepperl+Fuchs Model 1003 and Bebco EPS Model 1003 Applications Configurations
Class I Areas
Enclosures Volume
not exceeding 75 Cubic Feet
Universal Mount
(excluding pressure switch)
Left, Right, Top, Bottom
or Panel Mounting
Horizontal Mount
(including pressure switch)
Top or Bottom Mounting


Vertical Mount
(including pressure switch)
Left or Right Mounting
 


Best Purging Systems
Corporation
Pepperl+Fuchs
Bebco EPS
®
(circa 2003-Present Day)
Bebco Industries
EPS Division

(circa 1990-2003)
Bebco Industries
EPS Division

(circa 1985-1989)
D & M
Instruments

(circa 2003-2013)
Model YZ103-CI/CII-L-U
Type Y & Z Universal Mount
Enclosure Pressurization Unit
(less pressure switch)
Model 1003-LPS-CI-YZ-LH
Model 1003-LPS-CI-YZ-RH
Model 1003-LPS-CI-YZ-TM
Model 1003-LPS-CI-YZ-BM
Model 1003-LPS-CI-YZ-PM

Model 1003-LPS-CII-YZ-LH
Model 1003-LPS-CII-YZ-RH
Model 1003-LPS-CII-YZ-TM
Model 1003-LPS-CII-YZ-BM
Model 1003-LPS-CII-YZ-PM
Model 103-LPS-CI-YZ-LH
Model 103-LPS-CI-YZ-RH
Model 103-LPS-CI-YZ-TM
Model 103-LPS-CI-YZ-BM
Model 103-LPS-CI-YZ-PM

Model 103-LPS-CII-YZ-LH
Model 103-LPS-CII-YZ-RH
Model 103-LPS-CII-YZ-TM
Model 103-LPS-CII-YZ-BM
Model 103-LPS-CII-YZ-PM
Model YZ-103-CI/CII-L-U
Model YZ103-CI/CII-W-H
Type Y & Z Horizontal Mount
Enclosure Pressurization Unit
(with pressure switch)
Model 1003-WPS-CI-YZ-TM
Model 1003-WPS-CI-YZ-BM

Model 1003-WPS-CII-YZ-TM
Model 1003-WPS-CII-YZ-BM
Model 103-WPS-CI-YZ-TM
Model 103-WPS-CI-YZ-BM

Model 103-WPS-CII-YZ-TM
Model 103-WPS-CII-YZ-BM
Model YZ-103-CI/CII-W-H
Model YZ103-CI/CII-W-V
Type Y & Z Vertical Mount
Enclosure Pressurization Unit
(with pressure switch)
Model 1003-WPS-CI-YZ-LH
Model 1003-WPS-CI-YZ-RH

Model 1003-WPS-CII-YZ-LH
Model 1003-WPS-CII-YZ-RH
Model 103-WPS-CI-YZ-LH
Model 103-WPS-CI-YZ-RH

Model 103-WPS-CII-YZ-LH
Model 103-WPS-CII-YZ-RH
Model YZ-103-CI/CII-W-V
Group B, C & D Pressure Switch Options
-24 (24 VDC), -120 (120 VAC) or -240 (240 VAC)
added as last segment to Horizontal or Vertical
Mount Unit Model Numbers to feature
Group B, C & D rated Pressure Switches


Example: YZ103-CI/CII-W-H-24
"WPS" replaced by "WPSA" to feature
Group B, C & D rated Pressure Switch, and
-24VDC, -120VAC or -240VAC added as last
segment to indicate Powered Contact Voltage

Example: 1003-WPSA-CI-YZ-TM-24VDC
Group B, C & D rated
Pressure Switches were not
available while these Products
were manufactured
"W" replaced by "B" to feature
Group B, C & D rated 120 VAC
Pressure Switch on Models with
W-H and W-V suffixes

Example: YZ-103-CI/CII-B-V
Obsolete  Highlighted fields indicate Products that are discontinued or no longer manufactured
 
Best Model 104 - Compatible to Pepperl+Fuchs Model 1004 and Bebco EPS Model 1004 Applications Configurations
Class I Areas
Enclosures Volume
not exceeding 250 Cubic Feet
Universal Mount
(excluding pressure switch)
Left, Right, Top, Bottom
or Panel Mounting
Horizontal Mount
(including pressure switch)
Top or Bottom Mounting


Vertical Mount
(including pressure switch)
Left or Right Mounting
 


Best Purging Systems
Corporation
Pepperl+Fuchs
Bebco EPS
®
(circa 2004-Present Day)
Bebco Industries
EPS Division

(circa 1990-2004)
Bebco Industries
EPS Division

(circa 1985-1989)
D & M
Instruments

(circa 2004-2013)
Model YZ104-CI/CII-L-U
Type Y & Z Universal Mount
Enclosure Pressurization Unit
(less pressure switch)
Model 1004-LPS-CI-YZ-LH
Model 1004-LPS-CI-YZ-RH
Model 1004-LPS-CI-YZ-TM
Model 1004-LPS-CI-YZ-BM
Model 1004-LPS-CI-YZ-PM

Model 1004-LPS-CII-YZ-LH
Model 1004-LPS-CII-YZ-RH
Model 1004-LPS-CII-YZ-TM
Model 1004-LPS-CII-YZ-BM
Model 1004-LPS-CII-YZ-PM
Model 104-LPS-CI-YZ-LH
Model 104-LPS-CI-YZ-RH
Model 104-LPS-CI-YZ-TM
Model 104-LPS-CI-YZ-BM
Model 104-LPS-CI-YZ-PM

Model 104-LPS-CII-YZ-LH
Model 104-LPS-CII-YZ-RH
Model 104-LPS-CII-YZ-TM
Model 104-LPS-CII-YZ-BM
Model 104-LPS-CII-YZ-PM
Model YZ-103-CI/CII-L-U
(volume limited to 200 cubic feet)
Model YZ104-CI/CII-W-H
Type Y & Z Horizontal Mount
Enclosure Pressurization Unit
(with pressure switch)
Model 1004-WPS-CI-YZ-TM
Model 1004-WPS-CI-YZ-BM

Model 1004-WPS-CII-YZ-TM
Model 1004-WPS-CII-YZ-BM
Model 104-WPS-CI-YZ-TM
Model 104-WPS-CI-YZ-BM

Model 104-WPS-CII-YZ-TM
Model 104-WPS-CII-YZ-BM
Model YZ-103-CI/CII-W-H
(volume limited to 200 cubic feet)
Model YZ104-CI/CII-W-V
Type Y & Z Vertical Mount
Enclosure Pressurization Unit
(with pressure switch)
Model 1004-WPS-CI-YZ-LH
Model 1004-WPS-CI-YZ-RH

Model 1004-WPS-CII-YZ-LH
Model 1004-WPS-CII-YZ-RH
Model 104-WPS-CI-YZ-LH
Model 104-WPS-CI-YZ-RH

Model 104-WPS-CII-YZ-LH
Model 104-WPS-CII-YZ-RH
Model YZ-103-CI/CII-W-V
(volume limited to 200 cubic feet)
Group B, C & D Pressure Switch Options
-24 (24 VDC), -120 (120 VAC) or -240 (240 VAC)
added as last segment to Horizontal or Vertical
Mount Unit Model Numbers to feature
Group B, C & D rated Pressure Switches


Example: YZ104-CI/CII-W-H-24
"WPS" replaced by "WPSA" to feature
Group B, C & D rated Pressure Switch, and
-24VDC, -120VAC or -240VAC added as last
segment to indicate Powered Contact Voltage

Example: 1004-WPSA-CI-YZ-TM-24VDC
Group B, C & D rated
Pressure Switches were not
available while these Products
were manufactured
"W" replaced by "B" to feature
Group B, C & D rated 120 VAC
Pressure Switch on Models with
W-H and W-V suffixes

Example: YZ-103-CI/CII-B-V
Obsolete  Highlighted fields indicate Products that are discontinued, not available or no longer manufactured
 


Contact us for sales and service of the world’s best enclosure purging and pressurization solutions

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Best Purging Systems Corporation
Physical Address: 4725 Lawndale Street, La Marque, Texas 77568
Mailing Address:  P.O. Box 68 Hitchcock, Texas 77563
Phone: (844) 787-4348     |   Fax: (409) 935-5819
Office Hours:
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