Description Size 6 Component series 6X Maximum operating pressure 420 bar Nominal flow 2 l/min Area of application in accordance with the Explosion Protection Directive 2014/34/EU: II 2G; II 2D Type of protection valve: – Ex h IIC T4 Gb X according to EN 80079-36 – Ex h IIIC T130°C Db X according to EN 80079-36 Type of protection valve solenoid: – Gas: eb (EN 60079-7), mb (EN 60079-18) – Dust: tb (EN 60079-31) IECEx certificate of conformity of the valve solenoid Features For intended use in potentially explosive atmosphere For subplate mounting Porting pattern according to ISO 4401-03-02-0-05 Wet-pin DC solenoid Electrical connection as individual connection and cable gland The external metal parts are galvanized to protect them against corrosion (seawater-resistant) Product description General information Proportional pressure relief valves of type DBET...XE... are remote control valves with seat design and are used for system pressure limitation. Operation is effected by means of proportional solenoid. The interior of the solenoid is connected to port T or Y and is filled with the hydraulic fluid. Dependent on the electric command value, these valves can be used to steplessly set the system pressure to be limited. The solenoids are controlled by an external amplifier of type VT-MSPA2…1A0 (data sheet 30232-01). The latter must not provide the solenoid with a current of more than 1.0 A. In order to achieve this prescribed safety when operating the valve in the potentially explosive area, the solenoid current must be monitored and limited. This is to be ensured by means of the VT-MUXA2 safety module (data sheet 30290). Set-up The valve basically consists of: Housing with connection surface (1) Proportional solenoid (2) Valve seat (3) Valve poppet (4 Armature plunger (5) Basic principle For the setting of the system pressure, a command value is specified at the control electronics. Dependent on the command value, the electronics actuate the solenoid coil with electric current. The proportional solenoid converts the electric current into mechanical force that acts on the valve poppet (4) via the armature plunger (5). The valve poppet (4) pushes onto the valve seat (3) and blocks the connection between port P and T or Y. If the hydraulic force on the valve poppet (4) equals the solenoid force, the valve controls the set pressure by lifting the valve poppet (4) off the valve seat (3) and thus enabling hydraulic fluid to flow from port P to T or Y. If the command value is zero, the control electronics only apply the minimum control current to the proportional solenoid (2) and the minimum set pressure is set. DBET...XE DBET.../...Y...XE Type code 01 02 03 04 05 06 07 08 09 DBET ‒ ‒ 6X / G24 XE J V 01 Proportional pressure relief valve DBET Solenoid position (facing the cable gland) 02 Position up 1 Position on the right 2 Position down 3 Position to the left 4 03 Component series 60 … 69 (60 … 69: unchanged installation and connection dimensions) 6X Ma
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