Page 2 - F03-BPS-YZ101A-Technical-Bulletin

Rear Views

Enclosure Unit Supply
Pressure Connection
Reference Enclosure
Connection Pressure
Enclosure Control
Pressure Regulator
Gauge Enclosure
Atmospheric Supply
Reference Connection
Horizontal Mount Unit Universal Mount Unit Vertical Mount Unit
with Pressure Switch less Pressure Switch with Pressure Switch

Unit & Mounting Flange Dimensions Model Number Matrix

9.0” Typical Model Number: YZ 101A-CI/CII-L-U-*
12” 8” Unit Type
Y - Division 1 / Zone 1 to Division 2 / Zone 2
Z - Division 2 / Zone 2 to Unclassified
12” Unit Series
9” 8”
101A - Purging & Pressurization Unit
Area Classification
CI/CII - Class I & Class II Areas
Horizontal Unit Universal Unit Vertical Unit
4.0” Pressure Switch Option
Our mounting hole patterns match L - Less Switch
Bebco & P+F Models 101A & 1001A! 0.625” 3.375”
4.0” W - Class I, Group C & D / Class II, Group E, F & G Switch
- Class I, Group A, B, C & D Switch
B
3.375”
0.625” 1.6875” 0.25”
Typ. 8 Mounting Configuration
10.3125” U - Universal V - Vertical H - Horizontal
0.25”
7.375” Typ. 4 11.375” Group B Switch Voltage (omit if not applicable)
8” 12” 24 - 24 VDC 120 - 120 VAC 240 - 240 VAC
Universal Unit Vertical & Horizontal Unit Please contact a Sales Associate for specifications and factory integration of
Mounting Flange Mounting Flange Model PMGK Panel Mount Gasket Kits for Universal Mounting Configurations
Material Specifications

Unit Mounting Plate & Flange: 304 Stainless Steel Atmospheric Reference: 316 Stainless Steel Body & 304 SS Element
Tube Fitting Bodies & Ferrules: 316 Stainless Steel Indelible Unit Nameplates: 3M Lexan TM w/ 3M VSB Adhesive
TM
Tube Fitting Compression Nut Coating: Molybdenum Disulfide Pressure Control Regulator Head & Knob: Acetal Polymer Plastic
Enclosure Pressure Gauge Lens: Acrylic w/ Neoprene O-Ring Pressure Control Regulator Body: Zinc w Buna N Elastomers
Enclosure Pressure Gauge Body: Cast Aluminum w/ Epoxy Finish Pressure Switch Body: Cast Aluminum w/ Epoxy Finish
Fastener Kit Sealing Screws: 316 Stainless Steel w/ Neoprene O-Ring Pressure Switch Body Bolts: Zinc Plated Steel
Fastener Kit Sealing Washers: 18-8 Stainless Steel w/ Neoprene Washer Pressure Switch Contacts: Mica Silver
Fastener Kit Locking Nuts: 316 Stainless Steel w/ Nylon Insert Enclosure Pressure Gauge & Switch Diaphragms: Flurosilicone

Unit & Protected Enclosure Accessory Bulletin Hyperlinks

Model PV Model RR Model BCK Model RAB & RAH Model EPSK Model EPWN & ETWN Model PMGK
Spark Arresting Redundant Supply Unit & Bulkhead Remote Alarm Enclosure Pressure Pressure & Temperature Panel Mount
Pressure Vents Pressure Regulators Connection Kits Beacons & Horns Switch Kits Warning Nameplates Gasket Kits
Prevents excessive Prevents excessive Connects the unit and Signals loss of Complements universal Provides NFPA required Converts universal mount
enclosure pressure upon enclosure pressure upon multiple protected protected enclosure mount units to activate markings for protected units for panel mounting in
unit regulator failure unit regulator failure enclosures of an array safe pressure audible or visual alarms enclosure doors and covers protected enclosures
One (1) Model EPWN Enclosure Warning Nameplate & One (1) Unit Flange or Panel Mount Fastener Kit furnished with all Units.
All specifications subject to change without notice. Warranty & Liability policies available upon request.
Best Purging Systems Corporation www.purgeit.com 4725 Lawndale • La Marque, Texas 77568 Phn: 844.PURGE IT