The Dupill Group, Inc.  
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Lars Lap

Delcua for Valve Test Equipment and Training
Velan
Weed Instrument
Valcor
I.A.F.D
Solidstate
Smith Flow Control
Areva Ultracheck RV for Valve Diagnostics
Actuators by RA Hiller

Abrasives


Lars Lap USA
 
Abrasives / Consumables

We offer most all abrasive materials and grits from 40 grit to 10,000 grit. Please contact us for abrasive material. Following is the recommended abrasive material and grit for the most common seat material and conditions:

SEAT CONDITION
BRASS SEAT
STAINLESS STEEL SEAT
STELLITE SEAT
Poor Condition

Step:

1
2
3
4
5

Grit:

80
120
180
400
400

Material:

Micron
Silicon (K)
Silicon (K)
Silicon (K)
Alumina (A)

Grit:

60-80
80
120
180
400

Material:

Diamond/CerAL*
Micron Alumina
Alumina (A)
Alumina (A)
Micron Alumina

Grit:

60-80
80
120
180
400

Material:

Diamond/CerAL*
Micron Alumina
Micron Alumina
Alumina (A)
Micron Alumina


Normal
Condition

Step:

1
2
3
4

Grit:

80
120
180
400

Material:

Silicon (K)
Silicon (K)
Silicon (K)
Silicon (K)

Grit:

80
120
180
400

Material:

Alumina (A)
Micron Alumina
Alumina (A)
Alumina (A)

Grit:

80
120
180
400

Material:

Micron Alumina
Micron Alumina
Micron Alumina
Micron Alumina


Good
Condition

Step:

1
2
3

Grit:

120
180
400

Material:

Silicon (K)
Silicon (K)
Silicon (K)

Grit:

120
180
400

Material:

Alumina (A)
Alumina (A)
Alumina (A)

Grit:

120
180
400

Material:

Micron Alumina
Micron Alumina
Micron Alumina


Micron Alumina may be used on any seat material

* Ceramic AL Oxide for hard seats

Valve Lapping and Polishing Machines | Valve Cutting and Boring Machines | Abrasives | Accessories

The Dupill Group, Inc. • 251 Athena Dr. • Delmont, PA 15626 • Ph. 724.468.3271 • Fx. 724.468.5896