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Style 231/ET PTFE Lined Rubber Expansion Joint

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Proco Products
Style 231/ET PTFE Lined Rubber Expansion Joints

Document(s) for this product

Catalog page (595.72 KB)
IO&M Manuals
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1.5X6231-ET-2XFG1-Z Style 231/ET PTFE Lined Rubber Expansion Joints
Nominal I.D. (in. | mm)
Note: Flange drillings shown are in accordance with ANSI B16.1 and ANSI B16.5 Class 125/150, AWWA C-207-07, Table 2 and 3 - Class D, Table 4 - Class E. Hole size shown is 1/8'' larger than AWWA standard
Maximum Design/Surge Pressure (PSI @ 170ºF | Bar @ 76ºC) 225 PSI | 16 Bar
Neutral Length (in. | mm) 6 in. | 152 mm
Media (Fluid): See compatible materials reference document.
Note: Prior to order placement for this product the customer is responsible for verifying that the selected expansion joint style and material is suitable for their service/application. Proco always recommends the use of control units.
Expansion Joint Material (Elastomer)
Maximum System Temperature (ºF)   [ 0 .. >170< .. 250 ]
Control Units Required?
System Design Pressure (PSI)   [ 0 .. >225< ]
No. of Control Units Recommended: 2
Note: The recommend number of control units is based on a test pressure of 1.5 times the system design pressure.
Type of Control Unit Configuration
Add spherical washers
Control Unit Material

Bill of Materials Data

Manufacturer PROCO Products, Inc.
Description Style 231/ET PTFE Lined Rubber Expansion Joints
Part number 1.5X6231-ET-2XFG1-Z
Note: Movements listed are non-concurrent, for concurrent movements please contact Proco Products, Inc.
Axial Compression Movement 1.25 in. | 32mm
Axial Extension Movement 0.625 in. | 16mm
Lateral Deflection Movement 0.625 in. | 16mm
Angular Deflection Movement (Deg.) 28
Torsional Rotation Movement (Deg.) 1
Thrust Factor 7.03 in²| 45cm²
Maximum Pressure Rating (At 170ºF | 76ºC) 225 PSI | 16 Bar
Max. Vacuum Rating (At 170ºF | 76ºC) 30 in. of Hg | 762mm of Hg
Note: Spring rate forces required to move expansion joints are based on zero pressure conditions and room temperature in the pipe line.
Axial Compression Spring Rate 462 lbs/in. | 81 N/mm
Axial Extension Spring Rate 555 lbs/in. | 97 N/mm
Lateral Deflection Spring Rate 108 lbs/in. | 19 N/mm
Angular Deflection Spring Rate 0.9 ft-lbs/º | 1.22 Nm/º

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