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Rockford Systems, LLC—www.rockfordsystems.com
Call: 1-800-922-7533
SECTION 2—OVERVIEW
DM
2
Series D Dual-Solenoid Valves
Valve Sizes
DM
2
Series D dual-solenoid valves are available in five sizes, providing a broad range
of flow capabilities. For convenience, valves are designated by the nominal sizes 2, 4,
8, 12, and 30 with outlet ports ranging from
1/4
" to 2".
Simplified Schematic
Sizes 2, 4, 8, 12 and 30
•
Dynamic Monitoring With Complete Memory—Memory, monitoring, and air flow
control functions are simply integrated into two identical valve elements. Valves
lock out due to asynchronous movement of valve elements during actuation or de-
actuation, resulting in a residual outlet pressure of less than 1% of supply. Overt
action is required for reset–cannot be reset by removing and re-applying supply
pressure.
Reset can only be accomplished by remote air signal, optional
electrical solenoid reset signal, or optional manual reset.
•
Basic 3/2 Normally Closed Valve Function—Dirt tolerant, wear compensating poppet
design for quick response and high flow capacity. Teflon back-up rings on pistons to
enhance valve endurance–operates with or without inline lubrication.
•
Status Indicator (Optional)—Includes a pressure switch with both normally open
and normally closed contacts to provide status feedback to the press control system
indicating whether the valve is in the lockout or ready-to-run condition. The status
indicator can be ordered installed or purchased separately and added to any DM
2
Series D base.
•
Silencers—All models include high-flow, clog-resistant silencers.
•
Mounting—Base mounted with NPT pipe threads. Inlet and outlet ports on both
sides provide for flexible piping. Plugs for unused ports are included.
Sizes 12 and 30
•
Intermediate Pilots—Increases pilot air flow for fast valve response, making it
possible to use the same size solenoids as valve sizes 2, 4, and 8, thereby reducing
electrical power requirements for these larger valves.
Size 8
Size 30
Self Monitored - Clutch/Brake Control
Size 2
Size 12
Size 4
Features
•
Base mounted
•
Highly contaminant tolerant poppet construction
•
High flow, clog-resistant silencers
•
Provides redundancy, dynamic monitoring and memory for the mechanical
press industry regarding the control of pneumatically controlled clutch and brake
applications
