Page 46 - ExpansionJointsCatalog2010

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™
520
STYLE
U-DESIGN for standard movements
PROCO Style 520 U-Type Fan/Duct Connectors:
The most economical of the integrally
flanged designs, the Style 520 is predominately used for fan vibration applications. The
fan/duct connector is manufactured in a U-Design configuration with a minimum of one
(1) to two (2) plies of reinforced fabric vulcanized into a homogeneous product that is 3/
16", 1/4" or 3/8" thick. The Style 520 is manufactured with continuous corners. No splices
will be made in the corner areas. Listed below is information regarding the Style 520 non-
metallic fan/duct connectors:
System Design Considerations:
In designing the Series 500, Style 520 non-metallic fans/
duct connector, several considerations must be taken into account to ensure long lasting
service.
• System Media:
The designer and/or requesting party should define the system me-
dia to determine the correct elastomer for each application. Evaluation of the gas/air
composition should be made during design of the non-metallic fan/duct connector. Abra-
sion characteristics and external environment conditions should also be taken into ac-
count when specifying the fabric element.
• System Temperature:
The system operating temperature is of primary importance to
the design of a non-metallic fan/duct connector, although the systemdesign is generally
specified. It is important to distinguish between operating and design as “design” can
include a significant safety factor which may result in an upgraded material or design
selection.
• System Pressure:
Normal operating pressures and maximum pressures (positive
and negative) under upset conditions should be specified. Combinations of pressures
and temperatures should be specifically identified.
• Movements:
Movements consist of thermal growth resulting from both operating
and upset conditions. Individual movements resulting from both conditions should be
specified. Maximum installation misalignment should also be taken into account to de-
termine if the non-metallic fan/duct connector design is capable of reacting to a combi-
nation of the total maximum movements.
PROCO
Material
Code
BB
Chlorobutyl
300
°
EE
EPDM
3/16"
1
300
°
±
2
HH
Hypalon
®
225
°
NH Neoprene/Hypalon
®
1/4"
2
225
°
±
3
NN
Neoprene
212
°
NP
Neoprene/Buna-N
3/8"
2
212
°
±
5
VV
Viton
®
400
°
Style 520 Available Materials
For Specific Elastomer
Recommendations, See:
PROCO
™
“Chemical To Elastomer Guide”
Maximum
Pressure
Rating (PSI)
Maximum
Operating
Temp
°
F
No. of
Reinforcement
Plies
Nominal
Body
Thickness
Elastomer
Styles
520
.75
.25
.50
1.25
.25
.75
2.0
.50
1.0
Maximum Movement Capabilities
Axial
Co
mpression
(In
ches)
6" Face To Face
9" Face To Face
12" Face To Face
Axial
Extension
(Inches)
Lateral
Offset
(Inches)
Axial
Compression
(Inches)
Axial
Extension
(Inches)
Lateral
Offset
(Inches)
Axial
Compression
(Inches)
Axial
Extension
(Inches)
Lateral
Offset
(Inches)
Non-Metallic Fan/Duct Connector Weight
(pounds per square foot of periphery)
Nominal
Body
Thickness
Elastomers
Retaining
Rings/Bars
Linear/Foot
Chloro-
butyl
Neoprene/
Hypalon
®
Neoprene/
Buna-N Viton
®
Hypalon
®
Neoprene
EPDM
1/4"
1.6
1.6
1.8
1.8
1.8
1.8
2.5
3/8"
2.5
2.5
2.6
2.6
2.6
2.6
4.8
3.5
NOTES: 1. Hypalon and Viton are registered trademarks of DuDont Dow Elastomers
2. Expansion Joint “Cover” (outside) can be Hypalon painted on special order.
3. Standard fabric reinforcement is polyester. Other high temperature materials are available upon request.
4. For vacuum applications, all fabric elements should retain sufficient setback from the duct to ensure that
belting does not protrude into the flow stream.
NOTES: 1. Lateral Offsets shown above are based on movements prior to axial compression. Greater lateral offset may be
obtained if the fan/duct connector encounters simultaneous compression.
2. Axial extension may be increased by pre-compression of the fan/duct connector during installation. any pre-
compression of the fan/duct connector will equally reduce the rated axial compression movement.
Design Data Sheet Fan/Duct Connector - Style 520
Tag No.:
Quantity:
Equipment Adjacent
The Connector:
Duct I.S. or Diameter:
Face To Face:
Operating:
Design:
Operating:
Design:
Axial Compression:
Axial Extension:
Lateral Offset:
Media: Gas or Air
(circle one)
Location of Joint:
(Inlet, Discharge, Bypass)
Item
Application
Size
Temperature
Pressure
Movements
G A
IN.
°
F
°
F
PSI
PSI
IN.
IN.
IN.