Batescrew High Head Valves
|These notes are applicable to High Head valves, of all models.|
|Click here for special notes on Welded Installations.|
|Extended Control Column.|
|TRANSIT BOLT. Valves are shipped with the door closed and secured to the
bottom frame by a single bolt. For
safety, it is important to leave the door secured, until all manual
handling is completed, or until the control column has been fully attached
to the door. There is a very
real risk of loosing fingers in a valve with a loose door.
Remove the bolt before attempting to open the valve.
ALL VALVES should be checked after installation, to be sure they
are free-running. Any sign of binding, rubbing, grinding, stiffness or
irregular feel in the handwheel, should be investigated.
A valve put into service with any of these defects will have
reduced service life and may not seal properly.
Misalignment of the control column may appear as bowing of the inner
control tube, so that it rubs on the outer tube, or the door may be forced
to one side within the guide tracks.
Misalignment of the column can occur as a result of:
Always check for foreign matter in the guide tracks, particularly on grouted installations.