Operation Manual P750/P1500/P3000
Cold Jet, LLC Page 23
Valve Types
Liquid Bleed Valve
This valve is used to relieve pressure from the liquid side and the liquid filter. It can also be
used to bleed excess vapor from the liquid supply lines before start up.
Vapor Purge Valve
This is a pneumatically actuated valve controlled by the Pelletizer. It is actuated any time the
machine is RESET from an E-stop condition or the main power is turned on. It's used to flush
out debris from the extrusion barrel during the purge cycle.
Liquid CO
2
Supply Valve
This is a pneumatically actuated valve controlled by the Pelletizer. It releases Liquid CO
2
into
the system from the supply tank when the unit is turned on.
Top Injector Valve Assembly
This assembly consists of two parts: a manually set flow control valve (set at the time of
installation) and the pneumatically actuated ball valve. The top injector is activated for the
purge and production cycles.
WARNING: THE FLOW CONTROL VALVE IS ONLY ALLOWED TO BE CALIBRATED BY A COLD JET
TRAINED OPERATOR.
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