///Abrasive flow is uneven or pulses
Abrasive feed

Abrasive flow is uneven or pulses

Uneven abrasive gives uneven cut speed and striations.

Safety first: Switch off the pump, release all pressure (open the on/off valve or bleed-down valve) and lock out before you open any high-pressure part. Never put a hand or tool near a running jet.
1Check the causes, most likely first 0 of 3 checked
01Worn metering orifice Most likely

An enlarged bore gives unstable flow.

How to check: Replace the metering part.

PhotoArt. no.DescriptionReplaces OEMExcl. VAT
10857 Tubing, Flexible, Clear, .38, Abrasive, 49885361
TubeKMT, Flow, H2O, Intermac
H2O 606116-1 · KMT 49885361 € 15.00
11947 Abrasive feed tube, 05076989
TubeKMT
05076989 € 43.20
12350 Metering disks FLOW sandfeeder, 009931-1
Bushing & ringFlow
009931-1 € 130.80
12555 Metering Valve Rubber Stopper, A-11073
Bushing & ringFlow
Flow A-11073 € 5.00
12560 Tubing, Flexible, Clear, 1/4", Abrasive, 100100
TubeOMAX
OMAX 100100 € 7.80

02Damp abrasive Possible

Moist abrasive flows in lumps.

How to check: Use dry abrasive.

03Worn abrasive hose Less likely

A worn or long hose slows flow.

How to check: Replace the hose.

Related problems

General advice based on manufacturer manuals and service practice. Always follow the manual of your machine. Not sure? .