LVS08 Series Proportional Directional Valves

The LVS08 with ON/OFF or Proportional Solenoids integral auxiliary functions and high power density make the LVS not only a highly adaptable modular valve, but also a very compact one. LVS valve blocks can be configured for both fixed and variable displacement pumps. Advantages include savings in energy costs due to low pressure losses, reliable supply of flow, oscillation-stable even in critical applications, and one valve-block solution for all pump systems.

• Specifications
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  MECHANICAL

  Recommended Mounting Orientation	With spool axis horizontal	-
  Fluid Temperature	-20°C to +80°C	-
  Viscosity Range	380 to 10 mm²/s	For reliable operation
  	80 to 20 mm²/s	For rated performance
  Pressure	Pump port max. 250 bar	-
  	Actuator port max. 280 bar	-
  	Tank port max. 200 bar	-
  Flow Rate	Maximum flow rate at the P inlet: 260 l/min	For higher pressures and flow rates, please inquire.
  	Maximum flow rate at the actuator ports= 180 l/min with control △p of 12 bar	-
  Valve Block Size	Max. 10 directional sections per valve block	-
  Hydraulic Fluid	Recommendation: High-quality fluids with a mineral-oil base, such as HLP oils to DIN 51524 part 2.	Biodegradable oils in groups HEES and HEPG can be used if following manufacturer's instructions. Please contact Bucher for other fluids.
  Minimum Fluid Cleanliness Level	ISO 4406 code 20/18/15	-
  Inlet Pressure	Max. 300 bar	For higher pressures, please inquire.
  Nominal Flow Rate Open-Center Systems	Max. 200 l/min	-
  Nominal Flow Rate Closed-Center Systems	Max. 260 l/min	-
  Nominal Flow Rate, A and B to T	Max. 300 l/min	-
  Nominal Flow Rate	50 l/min	-
  Maximum Inlet Pressure	250 bar	-
  Maximum Pressure at the Actuator Ports A and B	280 bar	-
  Nominal Flow Rate for Pressure Relief / Make-Up Valve	60 l/min	Permissible tolerances = ±10% at Qln = 3 l/min
  Maximum Flow Rate	50 l/min	-
  Maximum Inlet Pressure	250 bar	-
  Maximum Inlet Pressure with Manual Operation	250 bar	-
  Maximum Pressure at the Actuator Ports	280 bar	-
  Maximum Pressure at the Actuator Ports with Manual Operation	280 bar	-
  Spool Increments by Actuator Flow Rates at 12 bar △p	6 (A)	-
  	10 (B)	-
  	16 (C)	-
  	25 (D)	-
  	32 (E)	-
  	40 (F)	-
  	50 (P)	-
  Power Consumption and Voltage Tolerance ±10%	ON/OFF Solenoid: 30 W	-
  	Proportional Solenoid: max. 30 W at 2.5 A / 12 V	-
  	Proportional Solenoid: max. 30 W at 1.25 A / 24 V	-
  Energizing Current	Proportional Solenoid - 12 V: 0.8 to 2.5 A	-
  	Proportional Solenoid - 24 V: 0.4 to 1.25 A	-
  Duty Cycle	100%	2.5 A / 12 V or 1.25 A / 24 V
  Protection Class	AMP Junior Timer: IP65	-
  	Deutsch Plug DT04: IP67	DIN EN 60529
  Override Pin	ON/OFF Solenoid: 6 Φ	-
  	Proportional Solenoid: 2 Φ	-

  MAIN CHARACTERISTICS of the SEAT VALVES

  Maximum Flow Rate	50 l/min	-
  Power Consumption	20 W	-
  Voltage Tolerance	± 10%	-
  Coil Resistance	ON/OFF Solenoid: 7.4Ω for 12 V	-
  	Proportional Solenoid: 28.4Ω for 24 V	-
  Switching Time	Opening: 50 msec	-
  	Closing: 100 msec	-

  LVS08 STANDARD

  Port Threads for Actuator	A + B = G 1/2"	-
  Pressure Compensator	in A and B	Fine controlled compensator function for increased stability in the hydraulics systems.
  Override Pin	Included	-
  Freely Configurable Functions	Flow Rate	-
  	Spool Type in Mid-Position	-
  	Compensator Function	-
  	Control Type	Proportional Solenoid or ON/OFF
  	Plug Type	-
  Plug Options	AMP Junior Timer	-
  	Deutsch Plug DT04-2P-EP04	-

  LVS08 STANDARD with PRESSURE RELIEF / MAKE-UP VALVE

  Port Threads for Actuator	A + B = G 1/2"	-
  Pressure Compensator in Actuator	A + B	Fine controlled compensator function for increased stability in the hydraulics systems.
  Override Pin	Included	-
  Pressure Relief and Make-Up Function	A: 70 - 230 bar	Adjustable
  	B: 150 - 380 bar	Adjustable
  Freely Configurable Functions	Flow Rate	-
  	Spool type in mid-position	-
  	Pressure compensator function	-
  	Plug type	-
  	Control type	Proportional Solenoid or ON/OFF
  Plug Options	AMP Junior Timer	-
  	Deutsch Plug DT04-2P-EP04	-

  LVS08 STANDARD, SURFACE for BOLT-ON VALVE

  Bolt-On Plate	Prepared	-
  Pressure Compensator in Actuator	A + B	Fine controlled compensator function for increased stability in the hydraulics systems.
  Override Pin	Included	-
  Freely Configurable Functions	Flow Rate	-
  	Spool type in mid-position	-
  	Control Types	Proportional Solenoid or ON/OFF
  	Pressure compensator function	-
  	Plug Type	-
  Plug Options	AMP Junior Timer	-
  	Deutsch Plug DT04-2P-EP04	-

  LVS08 STANDARD, SURFACE for BOLT-ON VALVES, with PRESSURE RELIEF / MAKE-UP VALVE

  Bolt-On Section	Prepared	-
  Pressure Compensator in Actuator	A + B	Fine controlled compensator function for increased stability in the hydraulics systems.
  Override Pin	Included	-
  Pressure Relief and Make-Up Function	A: 70 - 230 bar	Adjustable
  	B: 150 - 380 bar	Adjustable
  Freely Configurable Functions	Flow Rate	-
  	Spool type in mid-position	-
  	Control Types	Proportional Solenoid or ON/OFF
  	Pressure compensator function	-
  	Plug Type	-
  Plug Options	AMP Junior Timer	-
  	Deutsch Plug DT04-2P-EP04	-

  LVS08 with INTEGRATED DOUBLE SEAT VALVE

  Port Thread for Actuator	A + B = G1/2"	-
  Pressure Compensator in Actuator	A + B	Fine controlled compensator function for increased stability in the hydraulics systems.
  Double Seat Valve	Solenoid operated	-
  Freely Configurable Functions	Flow Rate	-
  	Spool type in mid-position	-
  	Control Types	Proportional Solenoid or ON/OFF
  	Pressure compensator function	-
  	Plug Type	-
  Plug Options	AMP Junior Timer	-
  	Deutsch Plug DT04-2P-EP04	-

  LVS08 with ADDITIONAL MANUAL HANDLEVER

  Port Threads for Actuator	A + B = G1/2"	-
  Pressure Compensator in Actuator	A + B	Fine controlled compensator function for increased stability in the hydraulics systems.
  Additional Manual Handlever	With override pin Pmax 250 bar	With electrical operation, the hand lever remains in the 0 position (hand lever does not move with the spool).
  Freely Configurable Functions	Flow Rate	-
  	Spool type in mid-position	-
  	Control Types	Proportional Solenoid or ON/OFF
  	Pressure compensator function	-
  	Plug Type	-
  Plug Options	AMP Junior Timer	-
  	Deutsch Plug DT04-2P-EP04	-

  LVS08 with ADDITIONAL MANUAL HANDLEVER and PRESSURE RELIEF / MAKE-UP VALVE

  Pressure Relief	Make-Up Valve / choice of pressure settings	-
  Pressure Compensator in Actuator	A + B	Fine controlled compensator function for increased stability in the hydraulics systems.
  Pressure Relief and Make-Up Function	A: 70 - 230 bar	Adjustable
  	B: 150 - 380 bar	Adjustable
  Override Pin with Manual Handlever	Pmax 250 bar	With electrical operation, the hand lever remains in the 0 position (hand lever does not move with the spool).
  Freely Configurable Functions	Flow Rate	-
  	Spool type in mid-position	-
  	Control Types	Proportional Solenoid or ON/OFF
  	Pressure compensator function	-
  	Plug Type	-
  Plug Options	AMP Junior Timer	-
  	Deutsch Plug DT04-2P-EP04	-

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