HOW TO SELECT AND ORDER

The first step in selecting the proper expansion joint assembly is to collect and organize as much information regarding the design and operating parameters of the system as possible. As a minimum the following information should be provided:

• Size of the line.

• Design pressure.

• Design temperature.

• Design movements and required cycle life.

• Overall length requirement, if any.

• Type of end connections.

• Bellows material.

• Pipe material.

• Flange specification and material.

• Type of expansion joint.

• Accessories.

Please refer to the data sheet on page 28.

Thick Wall Flanged and Flued Head Expansion Joint

EXAMPLE

1. Assume the following expansion joint design criteria:

a) Line size: 16-inch nominal diameter.

b) Design/operating pressure: 160 psig.

c) Design/operating temperature: 450° F.

d) Movements/cycle life:

Installation: 0.25-inch compression; 0.125-inch extension; 0.0625-inch lateral; 0° angulation. Start-up/shut down: 1.0-inch compression; 0.25-inch lateral; 0°angulation; 300 cycles. Operating: 0.25-inch compression; 0.063-inch lateral; 1.0° angulation; 10,000 cycles.

e) End connections: 150 lb ANSI raised face slip-on flanges; ASTM A l05 (carbon steel).

f) Bellows material: A-240-T316.

g) Type: Single; unrestrained (i.e. no tie rods, hinge, or gimbal hardware).

h) Accessories: Liner and cover.

2. Turn to the Conversion Factor Graph and calculate equivalent catalog movements.

Total = 1.13 0.27 1.3

3. Refer to page 54, 16-inch nominal diameter single S-Flex expansion joints, and go to the lowest pressure rating that is equal to or greater than specified design pressure (160 psig). Compare the total equivalent catalog movements to those shown in the catalog, keeping in mind that the tabulated movements in the catalog are for 3000 cycles for one movement only.