A. Hauerwas GmbH
& Co. KG
Mobile and stationary repair machinery for sealing surfaces in slide- valves, valves
and on flanges nominal diameter 8 - 1250 mm
This is the Hauerwas homepage without
frames, to get full information, please download a
browser supporting frames such as Netscape Communicator 2.x or MS Internet Explorer 3.x.
Click here to go to framed version
-------------------------------------------------------------------------------------------------------------------
1. Company profile
2. Technic
3. transportable machines
4. stationary machines
5. contact - information
--------------------------------------------------------------------------------------------------------------------
1. Company profile
The founder of the company August Hauerwas founded the
company in 1939.
After his death 1977 his daughter, Mrs. Irmgard Hauerwas - Fleck, took
over the management and today
she is supported by her both sons.
Ladies and Gentlemen,
Please allow us to introduce ourselves. We manufacture special machines for the
maintenance of
seats on gates, valve - bodies and flanges from DN 8 - 1250 mm
Hauerwas Maschines are indispensable in:
Boiler houses, pipe lines in general, mining, conventional steam-, water- and nuclear
power stations, refuse incinerators,
in refineries and outside installations, chemical industries, turbine ships, ship yards,
valve producers, paper-, cellulose-,
and sugar plants, oilmills, breweries and maintenance companies.
Our machines are worldwide known for nearly 60 years and they are
operating everywhere with first class working results.
We have a lot of experience in the construction of long life stabil machines, with a
minimum of repair and suceptibility of troubles, with easy handling, operating and the
best working results.
We would like to send you our detailed prospectus for giving you further information.
In the "contact - information" category you will find all necessary data to
contact us.
------------------------------------------------------------------------------------------------------------------
Technic:
The following Hauerwas machines are equipped with an eccentric:
transportable machines: DM 1, DM 2, DM 3, DM 4, DM 1-2
stationary machines: Movema III - N, Taumelus III, Taumelus III - N, PLM, Portalmaschine
Why the Hauerwas machines' oscillating principle of working?
Higher cutting speeds on the external diameter of the sealing surfaces arise due to the
varying diameter ratios on the sealing surfaces to be machined, in the case of pure
turning motion. Due to the resultating different material removal, depending on the
applied working pressures, the sealing surfaces slope outwards and inwards. As a result of
the continously adjustable oscillation width, an additional sideways disc motion arises.
By this means, the differing cutting speeds are neutralized.
The greater the eccenter is set, the greater is the oscillation path. By this means, the
detrimental circumferential difference is removed. The duration of the reseating process
will be determined not only by the depth of the damage, but also by the oscillation width,
The flatness of the sealing surfaces also depends on the oscillating width.
Grinding patterns
The following advantages arise from the continously adjustable oscillation width:
-----------------------------------------------------------------------------------------------------------------------------
transportable valve repair machines:
Ventilette 3E working range: DN 8 - 50 mm
Ventilette 4E working range: DN 8 - 200 mm
compact grinding and lapping equipment for slide valves and valves, extensive accessories:
e.g. pipe clamp (picture),
grinding-in-device...... - Available with electric or compressed air drive.
HM 0
working range: DN 20 - 80 mm
Mobile light-weight slide valve grinding machine without eccentric. Best suited to removal
of scaling, rust, conglutinations and for levelling sealing surfaces. Available with
electric or compressed air drive.
HM 1 - 2
working range: DN 40 - 400 mm
Mobile light-weight slide valve grinding and lapping machine without eccentric.
Best suited to removal of scaling, rust, conglutinations and for levelling sealing
surfaces.
Available with electric or compressed air drive. Normal design with rigid machine arm.
Also available with telescopic machine arms! (picture)
DM - series
DM 1: working range DN 40 - 150 mm
DM 2: working range DN 80 - 400 mm
DM 3: working range DN 250 - 800 mm
DM 4: working range DN 500 - 1250 mm
Mobile slide valve grinding and lapping machines in solid design for continous load
service.
Equipped with double eccentric and telescopic machine arms, wich allow working under
narrow conditions.
Available with electric or compressed air drive.
DM 1 - 2
working range: DN 40 - 400 mm
Mobile slide valve grinding and lapping machine in solid design for continous load
service.
Equipped with double eccentric and telescopic machine arms, wich allow working under
narrow conditions.
Available with electric or compressed air drive.
High-Speed Valve Grinding
Machines
HVS 2 working range DN 30 - 150 mm
HVS 3 working range DN 30 - 600 mm (with special accessories)
for sealing surfaces of all types on: valves, flanges, compressures, turbines and pumps
-----------------------------------------------------------------------------------------------------------------------------
stationary valve repair machines:
Movema III - N
Fixed and mobile pillar machine for grinding and lapping sealing surfaces.
Working range in the workshop: slide valves, valves and flanges with flat sealing surfaces
of 10 - 300 mm nominal diameter
Working range on the pipeline: Valves with flat sealing surfaces of 100 - 400 mm nominal
diameter
Taumelus III
Stationary column machine with eccentric for grinding and lapping sealing
surfaces, with manual height adjustment,
without SPC - Control
Working range: DN 10 - 400 mm
Taumelus III - N
Fixed pillar machine with electrical height adjustment for grinding and lapping
of sealing surfaces.
SPC-Control and a work - table tilting to 12° standard!
working range on the tilting table: DN 10 - 500 mm, flange diameter up to
1000 mm
working range behind the machine:DN 10 - 1000 mm
extensive accessories, e.g. planing and turning head
PLM - Production-Lapping-Machine
Fixed machine for grinding and lapping of sealing surfaces with reverse operation
working range: DN 50 - 300 mm
Portalmaschine
Fixed machine for turning, grinding and lapping of the sealing surfaces up to a face to
face casing dimension of 920 mm.
Best suited for the general overhaul of fittings.
---------------------------------------------------------------------------------------------------------------------------
Contact - information:
Please select the way you wish to contact us:
A. Hauerwas GmbH & Co. KG
Kölner Landstraße 299
52351 Düren
Postfach 100837
52308 Düren
Telefon: +49 (0)2421 34103
Telefax: +49 (0)2421 38141E-Mail: info@hauerwas.de
techinfo@hauerwas.de
webmaster@hauerwas.de