ENCLOSURE PRESSURIZATION SYSTEMS

Specifications

We take great effort and care to provide you with all essential Pressurization Unit specifications, and we’ll be pleased to provide any additional information you may require upon request.

Simply click any item below for the data you require, and feel free to call us if you have any questions.  Please also note all data below is provided in our Technical Bulletins for your convenience.

Click any item for more information…

Dimensions & Weights

The following chart provides all unit dimensions and weights based on the unit size along with factors that affect these specifications.

Please use this chart to ensure our products will fit within the available space on your protected enclosure!

Flange Mounted Model YZ101A Pressurization Units

Model NumberUnit HeightUnit WidthOverall Unit DepthUnit Weight
YZ101A-CI/CII-L-U8″8″5.875″3.5 lbs.
YZ101A-CI/CII-W-V or B-V12″9″7.625″8.0 lbs.
YZ101A-CI/CII-W-H or B-H9″12″7.625″8.0 lbs.

Flange Mounted Model YZ101B Pressurization Units

Model NumberUnit HeightUnit WidthOverall Unit DepthUnit Weight
YZ101B-CII-L-U9″9″6.375″5.0 lbs.
YZ101B-CII-W-V or B-V12″9″7.625″9.0 lbs.
YZ101B-CII-W-H or B-H9″12″7.625″9.0 lbs.

Flange Mounted Model YZ101C Pressurization Units

Model NumberUnit HeightUnit WidthOverall Unit DepthUnit Weight
YZ101C-CII-L-U9″9″6.375″5.5 lbs
YZ101C-CII-W-V or B-V12″9″7.625″10.5 lbs.
YZ101C-CII-W-H or B-H9″12″7.625″10.0 lbs.

Universal Unit Interior & Exterior Panel Mounting Depths

Model NumberInterior DepthExterior Depth
YZ101A-CI/CII-L-U2.5″1.75″
YZ101B-CII-L-U2.5″2.25″
YZ101C-CII-L-U3.25″2.25″

All information above is subject to change without notice and is provided for reference only.

Overall Unit & Interior Depths exclude clearances required for tubing connections.

Consult a Best Purging Systems Corporation Sales Associate for specific unit information at time of inquiry or order.

Operating Temperatures

The following chart provides an overview of minimum and maximum operating temperature to ensure our unit is compatible with your specific application.

Please contact a Best Purging Systems Corporation Sales Associate for applications exceeding the ranges stated below.

Model Number

Minimum Temperature

Maximum Temperature

All Units

-20°F

120°F

Operating units within the posted temperature ranges will insure optimum unit performance. Contact a Best Purging Systems Corporation Sales Associate for more information at time of inquiry or order.

Performance Specifications

The following chart provides all critical specifications regarding capacities, protective gas supply requirements, connection sizes and performance factors.

Please use this chart to ensure your installation team is properly prepared and you have a sufficient protective gas supply!

Model 101AModel 101BModel 101C

Class I ApplicationsUp to 2 cubic feetNot ApplicableNot Applicable
Class II ApplicationsUp to 10 Cubic FeetUp to 50 Cubic FeetUp to 250 Cubic Feet
Protective Gas Supply *Air or Inert GasAir or Inert GasAir or Inert Gas
Unit Supply Pressure w/ Purge Vent80 – 125 psi max80 – 125 psi max80 – 125 psi max
Unit Supply Pressure w/ Redundant Regulators5 psi max5 psi max5 psi max
Unit Supply Connection1/4″ tube fitting3/8″ tube fitting1/2″ tube fitting
Enclosure Supply Connection1/4″ tube fitting3/8″ tube fitting1/2″ tube fitting
Enclosure Reference Connection1/4″ tube fitting1/4″ tube fitting1/4″ tube fitting
Safe Enclosure Pressure0.25″ w.c.0.25″ w.c.0.25″ w.c.
Safe Pressure Flow Rate **0.1 – 3.5 SCFH per cf0.1 – 3.5 SCFH per cf0.1 – 3.5 SCFH per cf
Class I Area Purge Time ***5 Minutes MinimumNot ApplicableNot Applicable
Switch Set Point on Decrease0.15” w.c. ± 0.02”0.15” w.c. ± 0.02”0.15” w.c. ± 0.02”

*Air must contain no more than trace amounts of flammable vapors.
** Enclosure integrity determines safe pressure flow rate.
*** Purge Time dependent on air flow rate at Safe Pressure – contact a Sales
Associate for more information.

Component Material Specifications

Reliable, industrial-grade materials and components guarantee optimal unit performance in the harshest industrial environments!

Please use this chart to ensure our product’s compatibility with your specific application!

Unit Components
Valve & Fitting Bodies, Ferrules & Unit Fasteners:316 Stainless Steel
Tube Fitting Compression Nut Coating:Molybdenum Disulfide
Enclosure Pressure Gauge Lens:Acrylic w/ Neoprene O-Ring
Enclosure Pressure Gauge Body:Cast Aluminum w/ Epoxy Finish
Atmospheric Reference:316 Stainless Steel Body & 304 SS Element
Indelible Unit Nameplates:0.10″ Velvet Lexan™ w/ VSB™ Adhesive
Pressure Control Regulator Head & Knob:Acetal Polymer Plastic
Pressure Control Regulator Body:Zinc w Buna N Elastomers
Pressure Switch Body:Cast Aluminum w/ Epoxy Finish
Pressure Switch Bolts & Contacts:Zinc Plated Steel & Mica Silver
Enclosure Pressure Gauge & Switch Diaphragms:Fluorosilicone
Unit Accessories (Shipped loose with each Unit)
Model EPWN Enclosure Pressure Warning Nameplate:0.10″ Velvet Lexan™ w/ VSB™ Adhesive
Fastener Kit Sealing Screws:316 Stainless Steel w/ Neoprene O-Ring
Fastener Kit Sealing Washers:18-8 Stainless Steel w/ Neoprene Washer
Fastener Kit Locking Nuts:316 Stainless Steel w/ Nylon Insert

Velvet Lexan™ and VSB™ are Trademarks of the 3M™ Company

Documentation & Installation Accessories

Complete Information & Hardware are included with each Unit to make installation a fast and easy process!

Please visit our Technical Bulletins Page to review, print and share our Installation, Operation & Maintenance Manuals!

All Units are furnished with the following documentation and installation accessories:

One (1) 14 Page Installation, Operation
& Maintenance Manual 
One (1) Model EPWN Enclosure
Pressure Warning Nameplate
One (1) Set of Stainless Steel Unit
Mounting Fasteners

Additional Manuals & Warning Nameplates are available with each Unit at time of order placement, upon request.

Best Purging Systems Corporation provides a comprehensive 14 page full color Installation, Operation and Maintenance Manual with every Unit, along with a Model EPWN Enclosure Pressure Warning Nameplate and a complete set of stainless steel fasteners with neoprene sealing screws and washers.   The Warning Label satisfies protected enclosure labeling requirements of NFPA 496, and is required on all doors and cover plates.   The fastener kit provides sufficient fasteners to mount your Unit externally or in a panel mounted position (panel mounting applicable to universal configurations only).   For additional Installation Operation and Maintenance Manuals, Enclosure Pressure Warning Nameplates or fasteners, please contact a Best Purging Systems Sales Associate!

ENCLOSURE PRESSURIZATION SYSTEMS

Specifications

We take great effort and care to provide you with all essential Pressurization Unit specifications, and we’ll be pleased to provide any additional information you may require upon request.

Simply click any item below for the data you require, and feel free to call us if you have any questions.  Please also note all data below is provided in our Technical Bulletins for your convenience.

Click any item for more information…

Dimensions & Weights

The following chart provides all unit dimensions and weights based on the unit size along with factors that affect these specifications.

Please use this chart to ensure our products will fit within the available space on your protected enclosure!

Flange Mounted Model YZ101A Pressurization Units

Model NumberUnit HeightUnit WidthOverall Unit DepthUnit Weight
YZ101A-CI/CII-L-U8″8″5.875″3.5 lbs.
YZ101A-CI/CII-W-V or B-V12″9″7.625″8.0 lbs.
YZ101A-CI/CII-W-H or B-H9″12″7.625″8.0 lbs.

Flange Mounted Model YZ101B Pressurization Units

Model NumberUnit HeightUnit WidthOverall Unit DepthUnit Weight
YZ101B-CII-L-U9″9″6.375″5.0 lbs.
YZ101B-CII-W-V or B-V12″9″7.625″9.0 lbs.
YZ101B-CII-W-H or B-H9″12″7.625″9.0 lbs.

Flange Mounted Model YZ101C Pressurization Units

Model NumberUnit HeightUnit WidthOverall Unit DepthUnit Weight
YZ101C-CII-L-U9″9″6.375″5.5 lbs
YZ101C-CII-W-V or B-V12″9″7.625″10.5 lbs.
YZ101C-CII-W-H or B-H9″12″7.625″10.0 lbs.

Universal Unit Interior & Exterior
Panel Mounting Depths

Model NumberInterior DepthExterior Depth
YZ101A-CI/CII-L-U2.5″1.75″
YZ101B-CII-L-U2.5″2.25″
YZ101C-CII-L-U3.25″2.25″

All information above is subject to change without notice and is provided for reference only.

Overall Unit & Interior Depths exclude clearances required for tubing connections.

Consult a Best Purging Systems Corporation Sales Associate for specific unit information
at time of inquiry or order.

Operating Temperatures

The following chart provides an overview of minimum and maximum operating temperature to ensure our unit is compatible with your specific application.

Please contact a Best Purging Systems Corporation Sales Associate for applications exceeding the ranges stated below.

Model Number

Minimum Temperature

Maximum Temperature

All Units

-20°F

120°F

Operating units within the posted temperature ranges will insure optimum unit performance. Contact a Best Purging Systems Corporation Sales Associate for more information at time of inquiry or order.

Performance Specifications

The following chart provides all critical
specifications regarding capacities, protective gas supply requirements, connection sizes
and performance factors.

Please use this chart to ensure your installation
team is properly prepared and you have a
sufficient protective gas supply!

Model 101AModel 101BModel 101C

Class I ApplicationsUp to 2 cubic feetNot ApplicableNot Applicable
Class II ApplicationsUp to 10 Cubic FeetUp to 50 Cubic FeetUp to 250 Cubic Feet
Protective Gas Supply *Air or Inert GasAir or Inert GasAir or Inert Gas
Unit Supply Pressure w/ Purge Vent80 – 125 psi max80 – 125 psi max80 – 125 psi max
Unit Supply Pressure w/ Redundant Regulators5 psi max5 psi max5 psi max
Unit Supply Connection1/4″ tube fitting3/8″ tube fitting1/2″ tube fitting
Enclosure Supply Connection1/4″ tube fitting3/8″ tube fitting1/2″ tube fitting
Enclosure Reference Connection1/4″ tube fitting1/4″ tube fitting1/4″ tube fitting
Safe Enclosure Pressure0.25″ w.c.0.25″ w.c.0.25″ w.c.
Safe Pressure Flow Rate **0.1 – 3.5 SCFH per cf0.1 – 3.5 SCFH per cf0.1 – 3.5 SCFH per cf
Class I Area Purge Time ***5 Minutes MinimumNot ApplicableNot Applicable
Switch Set Point on Decrease0.15” w.c. ± 0.02”0.15” w.c. ± 0.02”0.15” w.c. ± 0.02”

*Air must contain no more than trace
amounts of flammable vapors.

** Enclosure integrity determines
safe pressure flow rate.

*** Purge Time dependent on air flow rate at Safe Pressure – contact a Sales
Associate for more information.

Component Material Specifications

Reliable, industrial-grade materials and components guarantee optimal unit performance in the harshest industrial environments!

Please use this chart to ensure our product’s compatibility with your specific application!

Unit Components
Valve & Fitting Bodies, Ferrules & Unit Fasteners:316 Stainless Steel
Tube Fitting Compression Nut Coating:Molybdenum Disulfide
Enclosure Pressure Gauge Lens:Acrylic w/ Neoprene O-Ring
Enclosure Pressure Gauge Body:Cast Aluminum w/ Epoxy Finish
Atmospheric Reference:316 Stainless Steel Body & 304 SS Element
Indelible Unit Nameplates:0.10″ Velvet Lexan™ w/ VSB™ Adhesive
Pressure Control Regulator Head & Knob:Acetal Polymer Plastic
Pressure Control Regulator Body:Zinc w Buna N Elastomers
Pressure Switch Body:Cast Aluminum w/ Epoxy Finish
Pressure Switch Bolts & Contacts:Zinc Plated Steel & Mica Silver
Enclosure Pressure Gauge & Switch Diaphragms:Fluorosilicone
Unit Accessories (Shipped loose with each Unit)
Model EPWN Enclosure Pressure Warning Nameplate:0.10″ Velvet Lexan™ w/ VSB™ Adhesive
Fastener Kit Sealing Screws:316 Stainless Steel w/ Neoprene O-Ring
Fastener Kit Sealing Washers:18-8 Stainless Steel w/ Neoprene Washer
Fastener Kit Locking Nuts:316 Stainless Steel w/ Nylon Insert

Velvet Lexan™ and VSB™ are Trademarks of
the 3M™ Company

Documentation & Installation Accessories

Complete Information & Hardware are included with each Unit to make installation a fast and easy process!

Please visit our Technical Bulletins Page to review, print and share our Installation, Operation & Maintenance Manuals!

All Units are furnished with the following documentation and installation accessories:

One (1) 14 Page Installation, Operation
& Maintenance Manual 
One (1) Model EPWN Enclosure
Pressure Warning Nameplate
One (1) Set of Stainless Steel Unit
Mounting Fasteners

Additional Manuals & Warning Nameplates
are available with each Unit at time
of order placement, upon request.

Best Purging Systems Corporation provides a comprehensive 14 page full color Installation, Operation and Maintenance Manual with every Unit, along with a Model EPWN Enclosure Pressure Warning Nameplate and a complete set of stainless steel fasteners with neoprene sealing screws and washers.   The Warning Label satisfies protected enclosure labeling requirements of NFPA 496, and is required on all doors and cover plates.   The fastener kit provides sufficient fasteners to mount your Unit externally or in a panel mounted position (panel mounting applicable to universal configurations only).   For additional Installation Operation and Maintenance Manuals, Enclosure Pressure Warning Nameplates or fasteners, please contact a Best Purging Systems Sales Associate!

ENCLOSURE PRESSURIZATION SYSTEMS

Specifications

We take great effort and care to provide you with all essential Pressurization Unit specifications, and we’ll be pleased to provide any additional information you may require upon request.

Simply click any item below for the data you require, and feel free to call us if you have any questions.  Please also note all data below is provided in our Technical Bulletins for your convenience.

Click any item for more information…

Dimensions & Weights

The following chart provides all unit dimensions and weights based on the unit size
along with factors that affect these specifications.

Please use this chart to ensure our products will fit within the available space on your protected enclosure!

Flange Mounted Model YZ101A Pressurization Units

Model NumberUnit HeightUnit WidthOverall Unit DepthUnit Weight
YZ101A-CI/CII-L-U8″8″5.875″3.5 lbs.
YZ101A-CI/CII-W-V or B-V12″9″7.625″8.0 lbs.
YZ101A-CI/CII-W-H or B-H9″12″7.625″8.0 lbs.

Flange Mounted Model YZ101B Pressurization Units

Model NumberUnit HeightUnit WidthOverall Unit DepthUnit Weight
YZ101B-CII-L-U9″9″6.375″5.0 lbs.
YZ101B-CII-W-V or B-V12″9″7.625″9.0 lbs.
YZ101B-CII-W-H or B-H9″12″7.625″9.0 lbs.

Flange Mounted Model YZ101C Pressurization Units

Model NumberUnit HeightUnit WidthOverall Unit DepthUnit Weight
YZ101C-CII-L-U9″9″6.375″5.5 lbs
YZ101C-CII-W-V or B-V12″9″7.625″10.5 lbs.
YZ101C-CII-W-H or B-H9″12″7.625″10.0 lbs.

Universal Unit Interior & Exterior Panel Mounting Depths

Model NumberInterior DepthExterior Depth
YZ101A-CI/CII-L-U2.5″1.75″
YZ101B-CII-L-U2.5″2.25″
YZ101C-CII-L-U3.25″2.25″

All information above is subject to change without notice and is provided for reference only.

Overall Unit & Interior Depths exclude clearances required for tubing connections.

Consult a Best Purging Systems Corporation Sales Associate for specific unit information at time of inquiry or order.

Operating Temperatures

The following chart provides an overview of minimum and maximum operating temperature to ensure our unit is compatible with your specific application.

Please contact a Best Purging Systems Corporation Sales Associate for applications exceeding the ranges stated below.

Model Number

Minimum Temperature

Maximum Temperature

All Units

-20°F

120°F

Operating units within the posted temperature ranges will insure optimum unit performance. Contact a Best Purging Systems Corporation Sales Associate for more information
at time of inquiry or order.

Performance Specifications

The following chart provides all critical specifications regarding capacities, protective gas supply requirements, connection sizes and performance factors.

Please use this chart to ensure your installation team is properly prepared and you have a sufficient protective gas supply!

Model 101AModel 101BModel 101C

Class I ApplicationsUp to 2 cubic feetNot ApplicableNot Applicable
Class II ApplicationsUp to 10 Cubic FeetUp to 50 Cubic FeetUp to 250 Cubic Feet
Protective Gas Supply *Air or Inert GasAir or Inert GasAir or Inert Gas
Unit Supply Pressure w/ Purge Vent80 – 125 psi max80 – 125 psi max80 – 125 psi max
Unit Supply Pressure w/ Redundant Regulators5 psi max5 psi max5 psi max
Unit Supply Connection1/4″ tube fitting3/8″ tube fitting1/2″ tube fitting
Enclosure Supply Connection1/4″ tube fitting3/8″ tube fitting1/2″ tube fitting
Enclosure Reference Connection1/4″ tube fitting1/4″ tube fitting1/4″ tube fitting
Safe Enclosure Pressure0.25″ w.c.0.25″ w.c.0.25″ w.c.
Safe Pressure Flow Rate **0.1 – 3.5 SCFH per cf0.1 – 3.5 SCFH per cf0.1 – 3.5 SCFH per cf
Class I Area Purge Time ***5 Minutes MinimumNot ApplicableNot Applicable
Switch Set Point on Decrease0.15” w.c. ± 0.02”0.15” w.c. ± 0.02”0.15” w.c. ± 0.02”

*Air must contain no more than trace amounts of flammable vapors.
** Enclosure integrity determines safe pressure flow rate.
*** Purge Time dependent on air flow rate at Safe Pressure – contact a Sales
Associate for more information.

Component Material Specifications

Reliable, industrial-grade materials and components guarantee optimal unit performance in the harshest industrial environments!

Please use this chart to ensure our product’s compatibility with your specific application!

Unit Components
Valve & Fitting Bodies, Ferrules & Unit Fasteners:316 Stainless Steel
Tube Fitting Compression Nut Coating:Molybdenum Disulfide
Enclosure Pressure Gauge Lens:Acrylic w/ Neoprene O-Ring
Enclosure Pressure Gauge Body:Cast Aluminum w/ Epoxy Finish
Atmospheric Reference:316 Stainless Steel Body & 304 SS Element
Indelible Unit Nameplates:0.10″ Velvet Lexan™ w/ VSB™ Adhesive
Pressure Control Regulator Head & Knob:Acetal Polymer Plastic
Pressure Control Regulator Body:Zinc w Buna N Elastomers
Pressure Switch Body:Cast Aluminum w/ Epoxy Finish
Pressure Switch Bolts & Contacts:Zinc Plated Steel & Mica Silver
Enclosure Pressure Gauge & Switch Diaphragms:Fluorosilicone
Unit Accessories (Shipped loose with each Unit)
Model EPWN Enclosure Pressure Warning Nameplate:0.10″ Velvet Lexan™ w/ VSB™ Adhesive
Fastener Kit Sealing Screws:316 Stainless Steel w/ Neoprene O-Ring
Fastener Kit Sealing Washers:18-8 Stainless Steel w/ Neoprene Washer
Fastener Kit Locking Nuts:316 Stainless Steel w/ Nylon Insert

Velvet Lexan™ and VSB™ are Trademarks of the 3M™ Company

Documentation & Installation Accessories

Complete Information & Hardware are included with each Unit to make installation a fast and easy process!

Please visit our Technical Bulletins Page to review, print and share our Installation, Operation & Maintenance Manuals!

All Units are furnished with the following documentation and installation accessories:

One (1) 14 Page Installation, Operation
& Maintenance Manual 
One (1) Model EPWN Enclosure
Pressure Warning Nameplate
One (1) Set of Stainless Steel Unit
Mounting Fasteners

Additional Manuals & Warning Nameplates are available with each Unit at time of order placement, upon request.

Best Purging Systems Corporation provides a comprehensive 14 page full color Installation, Operation and Maintenance Manual with every Unit, along with a Model EPWN Enclosure Pressure Warning Nameplate and a complete set of stainless steel fasteners with neoprene sealing screws and washers.   The Warning Label satisfies protected enclosure labeling requirements of NFPA 496, and is required on all doors and cover plates.   The fastener kit provides sufficient fasteners to mount your Unit externally or in a panel mounted position (panel mounting applicable to universal configurations only).   For additional Installation Operation and Maintenance Manuals, Enclosure Pressure Warning Nameplates or fasteners, please contact a Best Purging Systems Sales Associate!