LV -- GENERAL INFORMATION
The Brand LV22, loader directional control valve, is a superbly designed two spool monoblock valve suitable for Front End Loaders. The LV22 offers two parallel, tandem center 4-way work sections available with two of the following spool actions: float, regenerative or spring-to-center. The valve is also field convertible to closed center or power beyond with the appropriate cartridge.
SPOOLS – Tandem center 4-way (T, in model code) powers a cylinder or a motor in both directions. Regen 4-way (R, in model code) acts just like a Tandem center spool in the standard three positions, but also has a fourth position that allows for rapid extension of a cylinder (uses FS spool action). For more information, see the Spool Schematics below.
SPOOL ACTIONS – Spring-to-center (S, in model code) returns the handle to neutral when the handle is released. Fourth position spring centering (FS, in model code) is similar to spring-to-center except it has a fourth position that allows a cylinder to rapidly extend (must use Regen spool). Fourth position float (K, in model code) is similar to spring-to-center except it has a fourth position detent that makes all ports common to each other (used with tandem center spool only).
ACTUATORS – Standard joystick handle (A, in model code) is used to actuate two adjacent spools with one handle. Optional joystick handles (A1, A2 & A3, in model code) also actuate two adjacent spools with one handle, but have different actuation patterns (See joystick diagram on page four). Enclosed lever handle (L, in model code) pressurizes the “B” port when the handle is pushed towards the valve body and is convertible from the vertical to the horizontal position. No actuator (N, in model code) is used when it is necessary to connect the spool to an external actuator.
OPTIONS – Power beyond (W, in model code) offers high pressure carryover for valves downstream. The LV22 valve is also field convertible to power beyond with the LV2-W power beyond cartridge kit. Closed center (C, in model code) blocks the neutral flow path and is required in pressure compensating, i.e. closed center systems. The LV22 valve is also field convertible to closed center with the LV2-C closed center cartridge kit. Adjustable relief (B, in model code) is factory preset at 2000psi (138 bar), but is adjustable from 1200 to 3100 psi (83 to 214 bar) and can be ordered in pressure intervals of 100 psi (6.9 bar). For pressure setting above the standard range, use spring P/N S064 for relief settings of 3100psi to 4000psi (214 to 276 bar). For pressure setting below the standard range, use spring P/N S065 for relief settings of 500psi to 1200psi (34 to 83 bar).
 
[Features]
[General Information]
[Creating Model Codes]
[Flow Charts] [Dimensional Data] [LV Catalog Download] ["LV"] |