Blastline Portable Blast Machine CFM/Nozzle Guide

Blastline Ltd is an ISO 9001/2000 approved company FOR THE MANUFACTURE, FABRICATION, and TESTING OF BLAST MACHINES. All of our vessels are fabricated by coded welders and built to the Pressure Equipment Directive 97/23/EC.

The size of nozzle used will depend on the volume of the compressor As the following chart shows.

	60 psi	70 psi	80 psi	90 psi	100 psi
1/4" 6mm	54 cfm	60 cfm	68 cfm	74 cfm	81 cfm
5/16" 8mm	89 cfm	101 cfm	113 cfm	126 cfm	137 cfm
3/8" 9.5mm	126 cfm	143 cfm	161 cfm	173 cfm	196 cfm
7/16" 11mm	170 cfm	190 cfm	217 cfm	240 cfm	254 cfm
1/2" 13mm	224 cfm	252 cfm	208 cfm	309 cfm	338 cfm

Source – British Compressed Air Society data

Notes–

The physical size of abrasive particles also needs to be considered by the end user as too small a nozzle will result in blockages

CFM will also reduce at the point of the nozzle dependant on over extending the blast hose i.e. when hose is extended past 40 mtrs losses over 10% for each further length can occur dependant on site conditions.

Blastline only sell tungsten carbine nozzles of UK manufacture to ensure consistent quality and 500 hr lifespan of the nozzle, (excludes aluminium oxide abrasive).