Description Size 10 … 32 Component series 5X Maximum operating pressure 350 bar Area of application in accordance with the Explosion Protection Directive 2014/34/EU: I M2, II 2G, II 2D Types of protection of the valve: c (EN 13463-5) Features For subplate mounting Porting pattern according to: ISO 6264-06-09 (NG10), ISO 6264-08-13 (NG25), ISO 6264-10-17 (NG32) For threaded connection Adjustment type: Rotary knob 5 pressure ratings Product description Valves of type DB are pilot-operated pressure limitation valves. They serve to limit the operating pressure and mainly consist of the main valve (1) with main spool insert (3), the pilot control valve (2) and the closing plate (16). The pressure in channel P acts on the main spool (3). Simultaneously, the pressure is applied via the control lines (6) and (7), which are equipped with nozzles (4) and (5), to the spring-loaded side of the main spool (3) and to the ball (8) in the pilot control valve (2). If the pressure in channel P is increased due to the value which is set at the spring (9), the ball (8) opens against the spring (9). The signal for this is sent internally via the control lines (10) and (6) from channel P. The hydraulic fluid on the spring-loaded side of the main spool (3) now flows via the control line (7), nozzle bore (11) and ball (8) in the spring chamber (12). From here, it is passed on to the container internally with type DB...–... via control line (13) or externally with type DB...Y... via control line (14). Due to nozzles (4) and (5), there is a pressure drop at the main spool (3). The connection from channel P to channel T is free. Now, the hydraulic fluid flows from channel P to channel T while the set operating pressure is maintained. Via port "X" (15), the pressure relief valve can be relieved or switched to a different pressure (second pressure rating). Type DB 10…XC… See also "General information" in chapter "Technical data". Notice: With the attachment of an additional directional spool valve type 3WE 6…, the valve can be extended for solenoid-actuated unloading (see chapter "Project planning information", "Solenoid-actuated unloading"). Type code 01 02 03 04 05 06 07 08 09 10 11 DB 1 5X / XC V 01 Pressure relief valve, pilot controlled DB 02 Size 10 10 Size 25 20 Size 32 30 Type of connection 03 Valve for subplate mounting ‒ Valve for threaded connection G Adjustment type 04 Rotary knob 1 05 with main spool Ø24 mm (NG10, NG25) ‒ with main spool Ø28 mm (only with NG32) N 06 Component series 50 … 59 (50 … 59: unchanged installation and connection dimensions) 5X 07 Set pressure up to 50 bar 50 Set pressure up to 100 bar 100 Set pressure up to 200 bar 200 Set pressure up to 315 bar 315 Set pressure up to 350 bar 350 Pilot flow 08 Pilot oil supply and pilot oil return, internal ‒ External pilot oil supply, internal pilot oil return X Internal pilot oil supply, external pilot oil return Y Pilot oil supply and pilot oil return external XY 09 Standard version no code Valve for
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