Serpar Crossflow Double Valves

DM2® Series S are two interconnected DM2® D Series double valves for power presses which have separate clutch and brake, each requiring a double valve. These valves are cross piloted (interconnected) such that an abnormal function in either valve will cause both valves to lockout thus disengaging the clutch and engaging the brake. The DM2® S Series double valves provide redundancy, dynamic monitoring and memory for the mechanical press industry regarding the control of pneumatically controlled clutch and brake applications. Note: The consensus requirements of the regulations and best practices require that, in case of a failure within the valve, the clutch and brake mechanisms be quickly exhausted, a monitor takes action to prevent further operation, and a method to alert personnel is incorporated.

Key Features

• Two interconnected dynamically monitored valves with memory for mechanical power presses with separate pneumatically controlled clutch and brake mechanisms.
• Both valves lockout upon abnormal movement of dual poppets of a valve, residual outlet pressure is less than 1% of supply. Intentional reset required by remote air signal or optional electrical solenoid; not by removal & reapplication of supply pressure.
• Basic 3/2 normally closed valve function. Dirt tolerant poppet design for quick response and high flow capacity. Teflon® by DuPont back-up rings on pistons to enhance valve endurance - operates with or without inline lubrication.
• Status Indicator (Optional): Includes a pressure switch with both NO & NC contacts to provide status feedback to the press control system indicating whether the valve is in the lock-out or ready-to-run condition. Order installed or purchased separately.
• High flow, clog resistant silencers.
• Base mounted - with BSPP or NPT pipe threads. Inlet and outlet ports on both sides provide for flexible piping (plugs for unused ports included). Captive valve-to-base mounting screws.
• Intermediate Pilots (for size 12 and size 30 valves): Increase pilot air flow for fast valve response, and make it possible to use the same size solenoids as valve sizes 4 & 8, thereby reducing electrical power requirements for these larger valves.