Page 398 - Softbound_Edition_19_en

Proportional spool valve

Proportional spool valve
M33 x 2
Screw-in cartridge construction Wandfluh standard
◆ pilot operated
◆ Q = 150 l/min
max
◆ 1 volume flow level
◆ Q N max = 90 l/min
◆ p = 350 bar
max

DESCRIPTION APPLICATION
Pilot operated proportional spool valve in screw-in cartridge cons- Proportional spool valves are perfectly suitable for demanding
truction. Precise spool fit, low leakage, long service life time. Spool tasks due to the high resolution, large volume flow and low hyste-
made of hardened steel. The valve is controlled externally through resis. The applications are in the industry as well as in the mobile
a pilot pressure via the x and y connections. Without control, the hydraulics for the smooth control of hydraulic actuators. Some
piston is held in the central positon by a spring. Proportional to the examples: control of the rotor blades of wind generators, forestry
pilot pressure, the spool opening and the valve volume flow increa- and earth moving machines, machine tools and paper production

se. Thanks to the optimum spool form, sensitive movement proces- machines, simple position controls, robotics and fan control.

ses are possible. For the control, Wandfluh proportional pressure
valves (see register 2.3) and Wandfluh proportional amplifiers (see
register 1.13) are available.
TYPE CODE
W V P PM33 - - - 90 #
Spool valve
Directly operated

Proportional
Screw-in cartridge M33 x 2

Designation of symbols acc. to table

Nominal volume flow rate Q 90 l/min
N
Design index (subject to change)
1.10-2310

SYMBOL
Symmetrical control
ACB-S AC1-S CB2-S
A B A B A B

a 0 b a b
a b a b
Y X X Y
X P T Y P T P T

Meter-in control
ADB-V AD1-V DB2-V
A B A B A B

a b a b
a 0 b a b
Y X X Y
X P T Y P T P T

www.wandfluh.com Illustrations are not binding Data subject to change 1/3 Edition: 22 10 1.10-2310 E