Description Size 6 Component series 2X Maximum operating pressure 700 bar Maximum flow 12 l/min Features Operation via DC motor with speed reduction transmission For subplate mounting: Porting pattern according to ISO 6264 with actual value potentiometer Self-locking in case of power failure Direct operated valve for system pressure limitation For high pressure applications with a system pressure of up to 700 bar ‒ Suitable as pilot control valve for high pressure logic valves LCT / LFT Product description General information Proportional pressure relief valves type DBGT can be controlled remotely and serve for variable setting and limitation of system pressures up to 700 bar. The system pressure is set by means of a DC motor with self-locking speed reduction transmission. This way, the set pressure is maintained in the event of a voltage failure. Pressure relief valves of this series include a main valve (1) and electric motor (2) with gear (3) as pressure adjustment element. Functional description The system pressure is set by means of a DC motor (2) with speed reduction transmission (3). The output shaft of the speed reduction transmission turns the cam (4) that adjusts the preload of the spring (6) via the spring plate (5) to cause a pressure change. The pressure applied to channel P acts on the valve poppet (7). If the hydraulic force on the valve poppet exceeds the spring force, the valve regulates the set pressure by lifting the valve poppet from the valve seat (8) to enable the flow of hydraulic fluid from connection P to T. The cam position (4) and the spring preload is reported back by the actual value potentiometer (9). The integrated amplifier type VT-VRM1-1 enables program control. If the power supply is interrupted (cable break, fuse defect, short-circuit, etc.), the pressure set at the valve remains unchanged. Type code 01 02 03 04 05 06 07 DBGT ‒ 2X / 700 V P2 * 01 Pressure relief valve, direct operated with DC motor actuation DBGT 02 Component series 20 ... 29 (20 ... 29: unchanged installation and connection dimensions) - Size 6 2X Pressure rating 03 Set pressure up to 700 bar 700 Pilot flow 04 Pilot oil return, internal no code Pilot oil return, external Y Seal material 05 FKM seals V 06 Actual value potentiometer P2 07 Further details in the plain text Technical data general Type DBGT Size 6 Component series 2X Weight kg 7.2 Installation position any Ambient temperature range °C -20 … +50 hydraulic Type DBGT Maximum operating pressure Port P bar 700 Port T bar 10 Maximum set pressure Pressure rating 50 bar bar 700 Minimum set pressure at a command value of 0 q Vnom - abhängig (siehe Kennlinien) Maximum flow l/min 12 Hydraulic fluid see table Hydraulic fluid temperature range °C -20 … +70 Viscosity range mm²/s 2.8 … 380 Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 1) Class 20/18/15 according to ISO 4406 (c) Hysteresis 2) % Repetition accuracy 3) % 1) The cleanlin
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