490-08
Predetermined breaking point for Hawle freeflow underground hydrant

The predetermined breaking point shall be used exclusively for installation in Hawle underground hydrants type 490-00 and 494-04, 490-01.

The predetermined breaking point set consisting of a support liner and break bolts with washers and screws (factory preinstalled) ensures that the hydrant is not damaged when the installed standpipe is run down accidentally.

The set is can be installed subsequently in Hawle underground hydrants type 490 and 494 already installed.

Installation:
- Put hydrant to closed position
- Jaw coupling (bolts are not needed any more)
- Insert the support liner into the medium pipe and fix it
- Put on jaw coupling and connect the parts via the two break screws (tightening torque 30 Nm)

Picture:
1: Safety bolt
2: Predetermined breaking point
3: Suport liner