BlueLine™ PTFE Expansion Joints

Brochure

Overview

BlueLine™ Flexible Couplings, Expansion Joints and Bellows

BlueLine

All BlueLine™ flexible couplings, expansion joints and bellows are constructed from uniform-walled isostatically molded PTFE and demonstrate a high level of design consistency throughout the product line. This consistency—not apparent in competitive products—is a result of an optimally designed convolution and a proprietary manufacturing process.

BlueLine™ flexible couplings, expansion joints and bellows offer a wide variety of benefits for maintenance and repair personnel including:

  • Reliable protection for fragile FRP, carbon or glass equipment and nozzles
  • Superior corrosion resistance in acidic and caustic environments
  • Heavy walls made from isostatically molded virgin PTFE
  • Low spring rates with short face-to-face dimensions

Flexible Couplings

BlueLine™ flexible couplings are two convolution connectors, available from 1” to 12” in diameter, that compensate for minor movement and are ideal for use in piping systems as vibration and sound insulators.

Flexible Couplings (2 Convolutions)
 
Nom.
Size
Neutral
Length
A
Maximum
Travel
+ or -
Flare
Diameter
B
Maximum
Misalignment
Weight
Lbs.
1" 1-5/16" 1/4" 2" 1/8" 2.6
1-1/2" 1-1/2" 1/4" 2-7/8" 1/8" 3.9
2" 1-7/8" 1/4" 3 5/8" 1/8" 7.8
2-1/2" 1-15/16" 5/16" 4-1/8" 1/8" 10.8
3" 2-7/16" 3/8" 5" 3/16" 13.1
4" 2-5/8" 1/2" 6-3/16" 1/4" 18.2
5" 3-1/16" 11/16" 7-5/16" 1/4" 22.4
6" 2-13/16" 1/2" 8-1/2" 1/4" 27.7
8" 3-11/16" 13/16" 10-5/8" 1/4" 41.0
10" 4" 1" 12-3/4" 1/4" 60.1
12" 4-1/8" 1" 15" 1/4" 89.7

Maximum Operating Pressure vs.
Temperature (2 Convolutions)

Temperature
Flexible Couplings

Expansion Joints

BlueLine™ expansion joints are three convolution connectors, available from 1" to 12" in diameter, that compensate for moderate movement or misalignment, have increased flexibility, and can easily be installed in piping systems.

Expansion Joints (3 Convolutions)
 
Nom.
Size
Neutral
Length
A
Maximum
Travel
+ or -
Flare
Diameter
B
Maximum
Misalignment
Weight
Lbs.
1" 1-13/16" 1/2" 2" 1/4" 2.7
1-1/2" 2" 1/2" 2-7/8" 1/4" 4.1
2" 2-3/4" 3/4" 3-5/8" 3/8" 8.1
2-1/2" 3" 1" 4-1/8" 3/8" 11.2
3" 3-5/8" 1" 5" 1/2" 13.6
4" 3-3/4" 1-1/8" 6-3/16" 1/2" 18.9
5" 4" 1-1/8" 7-5/16" 1/2" 23.4
6" 4" 1-1/8" 8-1/2" 5/8" 29.1
8" 5-7/16" 1-11/16" 10-5/8" 5/8" 43.0

Maximum Operating Pressure vs.
Temperature (3 Convolutions)

Temperature
Expansion Joints

Bellows

BlueLine™ bellows are five convolution connectors, available from 1” to 12” in diameter, that compensate for extensive movement, misalignment and axial travel, have maximum flexibility and are ideal for use in weigh tank applications.

Bellows
 
Nom.
Size
Neutral
Length
A
Maximum
Travel
+ or -
Flare
Diameter
B
Maximum
Misalignment
Weight
Lbs.
1" 2-11/16" 13/16" 2" 1/2" 2.9
1-1/2" 3-3/16" 1-1/16" 2-7/8" 1/2" 4.3
2" 3-15/16" 1-1/16" 3-5/8" 1/2" 8.7
3" 4-15/16" 1-1/16" 5" 1/2" 14.8
4" 5-3/16" 1-5/16" 6-3/16" 5/8" 20.4
6" 5-11/16" 1-9/16" 8-1/2" 5/8" 31.8

Maximum Operating Pressure vs.
Temperature (5 Convolutions)

Temperature
Bellows

Ductile Iron Flanges

Ductile Iron

All BlueLine™ flexible couplings, expansion joints and bellows have ductile iron flanges drilled and tapped per ANSI B16.5 for Class 150 piping systems and three zinc plated carbon steel limit bolt restraints mounted through plastic side grommets.

Dimensional Data
 
Flange
Nom. Size
D
Class 150#
E
Limit Bolt
F
Flange
Holes Thread B.C. DIA. B.C. DIA. THK.
1" 4 1/2 - 13 3-1/8" 1/4" 5-1/16" 4-1/2" 5/16"
1-1/2" 4 1/2 - 13 3-7/8" 1/4" 5-13/16" 5" 3/8"
2" 4 5/8 - 11 4-3/4" 3/8" 7-1/16" 6" 1/2"
2-1/2" 4 5/8 - 11 5-1/2" 3/8" 8-1/16" 7" 1/2"
3" 4 5/8 - 11 6" 3/8" 8-9/16" 7-1/2" 3/16"
4" 8 5/8 - 11 7-1/2" 3/8" 10-1/16" 9" 5/8"
5" 8 3/4 - 10 8-1/2" 1/2" 11-5/16" 10" 11/16"
6" 8 3/4 - 10 9-1/2" 1/2" 12-5/16" 11" 11/16"
8" 8 3/4 - 10 11-3/4" 1/2" 14-13/16" 13-1/2" 3/4"
10" 12 7/8 - 9 14-1/4" 5/8" 17-1/2" 16" 13/16"
12" 12 7/8 - 9 17" 5/8" 20-1/2" 19" 7/8"

Vacuum Data

BlueLine™ flexible couplings and expansion joints can be used in full vacuum environments to the following temperatures:

Maximum Temperature For Full Vacuum
  CF - Consult Factory
Nom. Size Flexible Couplings
(2 Convolutions)
Expansion Joints
(3 Convolutions)
Bellows
(5 Convolutions)
1" 450°F 450°F 425°F
1-1/2" 450°F 450°F 425°F
2" 450°F 450°F 425°F
2-1/2" 425°F 425°F 400°F
3" 425°F 425°F 350°F
4" 400°F 400°F 300°F
5" 400°F 350°F 250°F
6" 320°F 300°F 200°F
8" 250°F 200°F 150°F
10" 200°F 200°F 100°F
12" 150°F 120°F CF