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HH Roberts Machinery Ltd
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Call us at 905-624-5536
Hauerwas valve grinding machine logo
Hauerwas Valve Repair Machines

HH Roberts Machinery sold the first Hauerwas valve grinding and lapping machines to Ontario Hydro about 1970.
Hauerwas is the world leader in portable machines to repair valve seats on pipes in-situ.
display of Hauerwas valve reipair machines
The machines are available in 2 basic categories

  • mobile or portable units to be mounted on valves in position in the pipe system allowing repair without the need to remove the valve

  • stationairy models for repair and/or production of valves.

    • This page is still
    under construction
    we are working on it daily:  check back for updates
    planetary disc sets for valve regrinding
    Planety discs: expandable to cover several sizes and each stone rotates independantly.
    Click here for more details
    		  
    chain mounting accessory for lapping machines
    Chain mounting for DM models
    cast iron lapping discs for valvle lappers
    Flat and and tapered smooth cast iron lapping discs to produce mirror finishes
    groove and slotted lapping discs
    grooved and slotted cast iron lapping discs help spread the lapping compound
    CBN flat and tapered discs for high speed valve seat repair
    CBN flat and tapered tools for high speed repairs to valve seats
    adhesive backed abbrasives for valve repairs
    Adhesive backed abbrasives, usually mounted on the steel discs.
    valve repair disc fitted with milling plates
    This is a special plate for milling of seriously damaged valve seats.

    Eash station has a segment much like a bastard cut file. The centre fixing screw can act as a guide for the plate in the valve seat. Each can be rotate to give a sharper segment