handhole

Gaskets are available in all sizes both manhole and handhole.

Look for the ingenious handhole, which allows you to turn off the gas bottle without opening the locker lid.

Leakage around manway & handhole covers which again, may result in expensive repairs.

Large Inventory of the most common sizes of handhole & manway gaskets available in Canada.

It is good practice to check the handholes prior to each startup to ensure that the handhole plates or gaskets have not shifted.

A grounding lug facing the handhole opening is provided with a steel flat bar welded inside that can be used for a fuse support.

Water intrusion into the "B" phase bushing caused an internal arc after high internal oil pressure caused an access handhole to blow out.

Install new gaskets, replace all handhole and manhole covers, refill boiler and perform a hydrostatic test, if required.

Operators of firetube boilers, and companies servicing them, should make a point of checking to ensure that the handhole yokes are not deformed.

It is thought that the tightening action combined with the deformation caused the handhole plate to shift, breaking the seal and resulting in the release of water and steam into the boiler building.