Description Size 6 Component series 2X Maximum operating pressure 315 bar Maximum flow 22 l/min Area of application in accordance with the Explosion Protection Directive 2014/34/EU: II 2G Type of protection of the valve solenoids: Ex eb mb IIC T4 Gb according to EN 60079-7 / EN 60079-18 Features 4/2 and 4/3-way version Sea water-resistant Spring-centered control spool For subplate mounting Porting pattern according to ISO 4401-03-02-0-05 (but without locating hole) Wet-pin DC solenoids Solenoid coil is rotatable by 90° Electrical connection as individual connection with cable gland Product description The 4/2 and 4/3 proportional directional valves are designed as direct operated valves in plate design. Operation is effected by means of proportional solenoids for potentially explosive areas. The solenoids are controlled by external control electronics. Set-up: The valve basically consists of: Housing (1) with connection surface Control spool (2) with compression springs (3 and 4) Solenoids (5 and 6) with central thread With de-energized solenoids (5 and 6), central position of the control spool (2) due to compression springs (3 and 4) Direct actuation of the control spool (2) by energization of one proportional solenoid, e. g. energization of solenoid "b" (6) Control spool (2) is moved to the left in proportion to the electrical input signal Connection from P → A and B → T via orifice-type cross-sections with progressive flow characteristics De-excitation of the solenoid (6) Control spool (2) is returned to the central position by the compression spring (3) Functional description: Notice: With the 4/3 version of the valves, only one solenoid may be actuated at a time. Type 4WRA 6 ...XE Valve with 2 spool positions (type 4WRA 6 .A...XEJ...): The function of this valve version basically corresponds to the valve with three spool positions. The 2 spool position valves are, however, only equipped with solenoid "a" (5). Instead of the 2nd proportional solenoid, a plug screw (7) is installed. Notice: The tank line must not be allowed to run empty. With corresponding installation conditions, a preload valve (preload pressure approx. 2 bar) must be installed. Type code 01 02 03 04 05 06 07 08 09 10 11 4 WRA 6 ‒ 2X / G24 XE J / * 01 4 main ports 4 02 Proportional directional valve for external control electronics WRA 03 Size 6 6 04 Symbols; for the possible version, see "Symbols/Circuit diagrams" E;E1-;W;W1-;EA;WA Nominal flow 05 6 l/min 07 10 l/min 15 18 l/min 30 06 Component series 20 ... 29 (20 ... 29: unchanged installation and connection dimensions) 2X Supply voltage of the control electronics 07 Direct voltage 24 V G24 Explosion protection 08 “Increased safety” explosion protection; for details, please refer to the information on explosion protection XE Surface protection 09 Seawater-resistant, galvanized J Seal material 10 NBR seals M 1) FKM seals V Observe compatibility of seals with hydraulic fluid used. 11 Further details in the plain text * 1) S
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