I

Product:
Anti-vibration mounting to be type WB (Deflection Horizontal Thrust Restraints), as manufactured by Mason UK Ltd.

Performance:
Restraint springs shall have the same deflection as the vertical isolator springs attached to equipment.
The assembly shall be preset at the factory and fine tuned in the field to allow for a maximum of 6mm movement from stop to maximum thrust.

Geometry:
The ratio of the Spring diameter by the compressed spring height cannot be less than 0.8.
Springs to have a minimum additional overload capacity of 50% of the rated deflection/compression before becoming solid.

Housing:
The assemblies shall be furnished with rod and angle brackets for attachment to both the equipment and duct work or the equipment and the structure.

Installation:
Restraints to be attached at the center line of thrust and symmetrically on both sides of the unit.