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AccuStream Cutting Systems

Waterjet/Abrasivejet Stream

The appearance of the waterjet stream will help show the condition of the nozzle and orifice. This will

have an effect on the quality of the cuts. A good water only stream looks like a "stretched fishing line"

along the first inch of its length.

Good Abrasivejet Stream

Optimal Cutting Parameters

Orifice size

The most commonly used orifice sizes for water only are .005" and .006". The most common orifice

sizes for abrasive are .010 and .014. As a rule, the starting nozzle to orifice ratio should be 3 to 1.

Example: A .010" orifice should have a .030" ID nozzle. The following table gives the most commonly

used nozzle combinations with their abrasive usage.

Nozzle and orifice combinations

Orifice

.007

.009

.010

.013

.014

.015

Typical combinations by pump size

Horsepower

100

150

13084 ON/OFF VALVE & CUTTING HEAD MANUAL

Nozzle

Abrasive

(pounds/min)

.020

.25

.030

.4 - .6

.030

.5 - .75

.040

1.0 – 1.25

.040

1.1 – 1.35

.040

1.25 – 1.5

Qty Heads

Good Waterjet Stream

Abrasive Mesh

120 – 220

80 – 120

60 – 80

60 - 80

Orifice/Nozzle

.010/.030

.006 water

.014/.040

.010/.030

.013/.040

.010/.030

.014/.040

.010/.030

.014/.040

.010/.030