FITTING / PVC Coated ST Style Knockout Hub

1-1/4 Inch STTB Through-Bulkhead Knockout Hub

Catalog Number
PRSTTB4
UPC
784011207633
Image
PVC Coated ST Style Knockout Hub
Image
Line Drawing of PVC Coated ST Style Knockout Hub
KnockoutHubs_Mark_E200413_QR-EN.png
Description

PVC coated STTB hubs are "Through-Bulkhead" fittings used to pass conduit runs through firewalls or bulkheads up to 1/8" thick.

Application
Used to pass conduit runs through firewalls or bulkheads up to 1/8" thick
Features
40 mil gray PVC exterior coating
2 mil red urethane interior coating
Available in 10 trade sizes 1/2" through 4"
Sealing sleeves on conduit side of hub
Molded PVC gasket seals flush with enclosure wall
O-ring gasket provides additional seal

General Information

Trade Size
1-1/4
Material
FERROUS METAL
Material
FERROUS METAL
Exterior Finish
A nominal .040 inch (40 mil) gray PVC coating
Interior Finish
A nominal .002 inch (2 mil) red urethane
Seal Type
O-ring gasket
Dimensions
Dimension A (Inches)
1.69
Dimension B (Inches)
3.25
Max Wall Thickness (Inches)
0.25
Nominal Weight (Pounds)
1
Standards
NEC/CEC
Class III, Division 1 & 2
NEC/CEC
Class I, Division 2
NEC/CEC
Class II, Division 1 & 2
Technical Specification Documents
Specification Guide (1995 Master) PDF DOC
Specification Guide (2004 Master) PDF DOC
Installer Certification and Tools PDF
Chemical Resistance Charts PDF
Performance Specifications PDF

Technical Information

Conduit Body
STTB
Fitting Type
KNOCKOUT HUB
Product Category
FITTING
Product Family
PVC Coated ST Style Knockout Hub
Notes
All Screw-tight Hubs are listed for NEMA and UL type enclosures 2, 3, 3R, 4, 4x, 11 and 12
Grounding and Bonding Hubs are listed for NEMA Enclosures 2, 3, 3R, 4 and

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