Ross Controls CATEGORY 4 - 3_2 VALVES SERIES DM2 C, E - Manual (Page 6)

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New Product
Introduction
Simplified
Schematic
Category 4 applications - e.g. Air Dump/Release.
FEATURES:
APPLICATIONS:
Dynamic Monitoring with Memory: • Memory, monitoring, and air flow control functions are integrated into two
identical valve elements for CAT 4 applications, except control of the clutch/brake mechanism on mechanical
power press. Valves lockout if asynchronous movement of valve elements occurs during actuation or de-
actuation, resulting in a residual outlet pressure of less than 1% of supply.
An action is required for reset
• : cannot be reset by removing and re-applying supply pressure or electrical
power. Reset can only be accomplished by the integrated electrical (solenoid) 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:
• Includes a pressure switch with both NO & NC contacts to provide status feedback to the
control system indicating whether the valve is in the lockout or ready-to-run condition.
Silencers:
• All models include high flow, clog resistant silencers.
Mounting: • Inline mounted – with BSPP or NPT pipe threads. Inlet and outlet ports on both sides provide for
flexible piping (plugs for unused ports included).
DM 2
® Series E
Control Reliable
Double Valve with Dynamic
Monitoring & Memory
Size 2
Port Size C
V
Weight
Model Number* In-Out Exh. In-Out Out-Exh. lb (Kg)
DM2ENA20**21 1/4 1/2 1.34 2.43 5.6 (2.43)
DM2ENA21**21 3/8 1/2 1.92 2.43 5.6 (2.43)
* NPT port threads. For BSPP threads replace “N” in the model
number with a “D”.
** Insert voltage code:
“A” = 24 volts DC, “B” = 110 volts AC, “C” = 220 volts AC,
“D” = 12 volts DC.
This valve is not designed for controlling clutch/brake mechanisms on mechanical power presses.