HH Roberts Machinery Ltd
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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 repair 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

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

Deep Discounts Available on stock models
The web pages on these machines awe are working on it daily:  Check back for updates or
call us.

(shown with optional air motor)
Ventilette 1
DN 8 to 50 mm
extendable to 70mm
Lightweight and handheld
3/8 - 2"
Hauerwas Ventilette S2 portable valve grinding and lapping machine
Ventilette S2
IN STOCK
DN 40 to 100mm
Lightweight and handheld for fast setup and completion.  Most valves can be repaired in about  6 minutes

more details
1 3/4 to 4"
Ventilette Type 1
DN 8 to 50mm
3/8 to 2"
Ventilette Type 2
DN 8 - 150mm
3/8 to 6"
f
Ventilette Type 3
DN  8 to 50mm
3/8 to 2"
Hauerwas Ventilette 4E on a valve
Ventilette Type 4
8 to 150mm

A stronger handheld model that can be frame mounted
3/8 to 6"
Hauerwas DM-1 Valve repair machine on a valve
Doppelex DM-1
40 - 150mm
The DM series use a universal drive with and
eccentric action.
1 3/4 - 6"
Hauerwas DM-2 on a valve
Doppelex DM-2
IN STOCK

shown with pneumatic drive
80 - 450mm
ext to 600mm
3 - 18"
extended to 24"
Doppelex 1-2
40-450
1 3/4 - 18"
Hauerwas DM-3 portable valve repair machine on a valve
Doppelex DM 3
250 - 800mm
ext to 1000mm
DM models 1, 2 and 3 on a display of valves
Doppelex DM4
500 - 1250
ext to 2000mm
Hauerwas Novema 3 valve seat finishing machine
Novema 3
hauerwas valve production machine
Taumelus III with dual tables
accessories for Huaerwas lapping machines
Tools, Accessories