FUNCTION
SECTION VIEW
The proportional valves of the P4WE series
are direct-acting proportional valves.
The volume flow is controlled continuously
(proportionally) to the electrical input signal
at the solenoid coil.
The valve consists of a valve casing (1), a
control piston (2) and two proportional
solenoids (3).
According to the input signal, the solenoid
generates a force and shifts the piston
against a spring. This releases cross-
sections, which define the size of the
volume flow, depending on the pressure
difference at the relevant control element.
For electronical control of the coil there are
electronic controls available (see brochure
5.249.2).
Hint:
Vent system and valve before setting in
motion.
Caution:
The valves are available in 12V and 24V
coil versions. A 24VDC supplied control
electronics enables improved dynamic and
hysteresis values for a valve with 12V coil.
A control electronic supplied with 12VDC
can only be used in combination with a 12V
coil version. Then the dynamic advantage
of the valve is lost.
TECHNICAL DATA ¹
EN 5.228.1. 2_05.22
3
3
3
1
2
General specifications
MTTF
d
150 - 1200 years, according to DIN EN
ISO 13849-1:2016; Table C.1,
confirmation of ISO 13849-2:2013; Tables
C.1 and C.2
Ambient temperature [°C] -20 to +60
Installation position No orientation restictions
Weight [kg] 1,5 one solenoid;
2,0 two solenoids
Material Valve casing: Cast iron
Name plate: Aluminium
Surface coating Valve casing: Phosphate coated
Hydraulic specifications
Operating pressure [bar] Port P, A, B: p
max
= 350
Port T: p
max
= 210
Flow rate
(bei Δp A → B min. 10 bar) [bar] see performance curves on page 4
Operating fluid
Hydraulic oil to DIN 51524 part 1, 2 and 3
Media operating temperature range [°C] -20 to +80
Viscosity range [mm²/s] 10 to 400
Permitted contamination level
of operating fluid
class 18/16/13 according to ISO 4406
Max. switching frequency [1/h] 7.000
Hysteresis [%] 6 of Q
max
Repeatability [%] ±1,5 of Q
max
Sealing material FKM (standard), NBR
Electrical specifications
Switching time [ms] Switch-on: 50 to 100
Switch-off: 10 to 60
Switching times are highly dependent on
pressure, flow rate and application of the valve.
Type of voltage DC
Rated voltage [V] 12 24
Max. current [A] 2,25 1,6
Resistance at 20°C [Ω] 2,7 5,0
Voltage tolerance [%] ±10
Duty cycle [%] 100
Protection class to DIN EN 60529 with electrical connection “G“ IP65 ²
with electrical connection “N“ IP65 ²
¹ see „Conditions and Instructions for Valves“ in brochure 53.000
² if installed correctly