7
3.2 Blast machine with pneumatically operated media metering valve
Figure 2: Blast machine with pneumatically operated metering valve and pneumatic remote controls.
Principle of operation: same as the standard pressure blasting device.
When the deadman handle (item 6) is depressed the metering valve opens, when it is released, the
metering valve closes. Read the Owner’s manual for more information on the metering valve.