Пропорциональный распределительный картриджный клапан с пилотным управлением FE

Description Size 16 Component series 2X Max. operating pressure 315 bar Flow, max. 190 l/min Features Pilot-operated 2-way proportional throttle valve in block installation technology Installation dimensions according to DIN ISO 7368 Orifice spool electrically position-controlled Flow direction from A to B In case of power failure or cable break, the orifice spool will automatically move into closed position and block the flow from A to B Can be used for pressure-compensated closed-loop flow control in conjunction with a pressure compensator For external analog electronics Product description Valves of type FE are pilot-operated 2-way proportional throttle valves for block installation for the continuous control of flows. Technical set-up The valve consists of four main assemblies: Cover (1) with connection surface for pilot oil connections Main valve (2) with orifice spool (3) Pilot control valve (4) with proportional solenoid (5) Command value-dependent position control of the orifice spool (3) and thus defined opening of the orifice (8) The flow depends on the Δp across the orifice (8) and the position of the orifice spool (3) Actual value recording of the orifice spool (3) position by the position transducer (7); command/actual value comparison in the electronics (6); variations are prepared and forwarded as control output for correction of the orifice spool (3) position to the proportional solenoid (5) to the pilot control valve (4) Area ratio of area (15) to area (12) = 1 : 1 Flow direction A → B; connect X to A or connect externally With external pilot oil supply, the pressure at X must be ≥ the pressure in A in order for the valve to work Pilot oil bypass via the nozzle (16) increases the vibration absorption When the enable is disconnected, the orifice spool (3) in the valve socket will move against stop (17) (closed position) and block the flow from A → B Orifice spool position at command value 0 V or 4 mA already regulated, whereas the orifice (8) is still located in the positive overlap and blocks A → B Zero flow over the orifice spool (3) and the pilot control valve (4) at command value 0 V or 4 mA as well as inactive enable see technical data Flow A → B and A connected to X The proportional solenoid (5) moves the pilot spool (4.1) against the spring (13) and opens the connection from control chamber (12) to Y; pressure reduction in the control chamber (12) and movement of orifice spool (3) in opening direction by the pressure in A on the area (15) Flow A → B and A connected to X Flow reduction in the proportional solenoid (5); the spring (13) moves the pilot spool (4.1) against the proportional solenoid and opens the connection from X to the control chamber (12); pressure build-up in the control chamber (12); pressure on the orifice spool area in the control chamber (12) plus spring force (10) move the orifice spool (3) in closing direction Can be used in connection with a pressure compensator for the load-compensated control of a f