SIZE RANGE: Preloads from 50 to 1800 pounds and maximum forces from 200 to 7200 pounds.

SERVICE: Recommended for controlling vibration; absorbing shock loading; guiding or restraining the movement of pipe resulting from thermal expansion; bracing a pipe line against sway.

APPROVALS: Complies with Federal Specification WW-H-1 71 E (Type 55) and Manufacturers Standardization Society SP-69 (Type 50).

SPECIFICATIONS: Fulfills the requirements of the ANSI Code for Pressure Piping as to fabrication details and materials.

INSTALLATION: Shipped ready for installation (see line cuts of fig. 297, fig. 298, fig. 302 and fig. 303 on page 130 for typical installed hanger assemblies).

ADJUSTMENT: The sway brace should be in the neutral position when the system is Hot and operating, at which time both spring plates should be in contact with the end plates. If they are not, the sway brace should be adjusted to the neutral position by use of the load coupling.

PRELOAD ADJUSTMENT - FIG. 301: Turn the preload adjustment nut until desired preload is indicated. Turn thrust nut until it is in contact with the spring plate. Lock in position. Indicated deflection must be greater than thermal movement.

 FEATURES:

• Vibration is opposed with an instantaneous Counte force bringing the pipe back to normal position.

• A single energy-absorbing pre-loaded spring pro vides two way action.

• One spring saves space and simplifies design.

• Spring has 3-inch travel in either direction.

• Accurate neutral adjustment assured.

ADDITIONAL FEATURE - FIG. 301:

The fig. 301 sway brace is adjustable from the initial preload to the maximum capacity of the uni selected. It is equipped with a load-deflection scale to facilitate preload adjustment.