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The
LarsLap mechanically driven valve boring system comprises
a number of basic models covering virtually every type
of valve from 1/2" to 47+" (1194+ mm) in diameter.
The patented LarsLap technology utilizes a mechanically
driven boring system whereby the rotating drive head
incorporates individually driven grinding wheels to
perform the actual work of the seat grinding. This unique
valve lapping tool provides the desired crosshatch pattern
on the valve seat considerably quicker than conventional
methods of grinding. Our versatile accessories for all
types of lapping work are the ideal complement to the
basic portable valve grinders.
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| Grinder
for globe valves, safety valves, and control valves
with flat and/or angle seat/weld removal, 2.5"-24"
(65-300mm), dependent on model chosen. |
Gate
valves and check valves-machine/cuts seat/welds/flanges
with flat and angle seats, 6"-24", (150-600mm),
dependent on model chosen. |
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Grinding
Technology: Mechanically Driven System
Our
valve lapping tools uses a patented mechanically driven
system with all grinding wheels moving at the same rate
of speed. This technology produces a perfect crosshatch
pattern because the inside and outside of the seat is
being ground at the same time. The speed is at least
five (5) times faster as a gear or o-ring is driving
each grinding wheel. The driving plate pivots instead
of the grinding wheels, which puts all the pressure
in the middle of the driving plate. This results in
a perfectly flat seat – without undesirable effects
such as concave or convex seats. These results can return
a concave or convex seat, damaged by improper grinding,
to the desired flatness. The direction of the motor
on the LarsLap valve grindning equipment can be easily
reversed (compressed air reversible motor drive).
Valve
Type Capability: Versatile
Models of the LarsLap valve lapping equipment are capable
of working on Gate Valves, Globe Valves, Check Valves,
Safety Valves and Control Valves. One does not require
an additional machine or accessory to work on each individual
valve type of valve. Each Lapping Model for use with
gate valves is equipped with a wedge plate.
Set Up/Mounting
The LarsLap valve cutting and boring equipment may be
set up prior to entering the valve requiring only fine
adjustments once the lapping machine is mounted in the
valve. As the valve lapping equipment is mechanically
driven, it is unnecessary to have the grinding wheels
centered perfectly. The LarsLap wheels need only to
cover the seat in order to work correctly. The valve
lapping tool is quickly and easily mounted. The mounting
frame does not need to be removed and reset when changing
grinding paper on the grinding heads or grinding opposite
side of seat. Mounting is versatile – the valve
grinder can be mounted in any direction.
The LarsLap valve lapping equipment is supplied standard
with a generous supply of grinding abrasive papers,
in micron and micron alumina, 80-120-200 grit. Additional
abrasive material and grit is available upon request. |
