DESCRIPTION FEATURES

EN 5.231.3. 0/01.20

CONTENT

Designation

Features

Model code

Spool types / Symbols

Function

Section view

Accessories

Technical Data

Performance

Dimensions

 High nominal flow due to optimized, cast manifold

 Low hysteresis due to precision machining of moving parts

 Easy interchangeability due to internationally standardised interface

ISO 4401

The P4WEH is a pilot operated

proportional directional valve, which

combines directional control with

speed control of the consumer.

The controlled volume flow is

proportional to the electrical input

signal on valve electronics.

According to the input signal, the

magnet generates a control

pressure, which shifts hydraulically

the main piston against a spring. In

this process, cross-sections are

released, which determine the size

of the volume flow depending on the

pressure difference.

4/3 proportional directional valves

hydraulic pilot operated

P4WEH 10 to 32

MODEL CODE

EN 5.231.3. 0/01.20

P4WEH E 10 E80 D01-24PG/V/D

Type

Proportional 4 directional valve, electrical / hydraulic

Control type

E = external pilot supply and drain

EI = external pilot supply, internal pilot drain

IE = internal pilot supply, external pilot drain

I = internal pilot supply and drain

Nominal size (NG)

10, 16, 25, 32

Symbols

See page 2

Nominal flow (at Δp = 10 bar P → T)

80 = 80 l/min

80/40 = 80 l/min (P → A or A → T) /40 l/min (B → T or P → B)

further nominal flows see page 4 „Nominal flow ranges“ in chart „Hydraulic specifications“

Series

D01 = standard

D02 = ISO 4401-05-05-0-05 (NG10 only)

Rated voltage of the solenoid coil

12 = 12 V DC

24 = 24 V DC

Coil Type

PG = DIN connector to DIN 43563

Sealing material

V = FKM (standard)

N = NBR

Pressure reducing valve (30 bar fixed)

Necessary if control pressure at port X is higher than 210 bar

SPOOL TYPES / SYMBOLS

Type Basic symbol Type Basic symbol

EA JA

EB JB

FUNCTION

SECTION VIEW

EN 5.231.3. 0/01.20

The P4WEH is a hydraulic pilot

operated, proportional 4 directional

valve. The volume flow is controlled

continuously (proportionally) to the

electrical input signal at the solenoid

coil.

These valves essentially consist of

the pilot stage (pressure regulating

valve) and the main stage

(directional valve). The pilot stage

consists of the valve housing (1), a

control piston with 2 pressure

measuring pins (2) and two

proportional solenoids (3).

The main stage consists of the

housing (4), a main piston (5) and a

centring spring (6) acting in both

directions.

The pressure supply of the valve

results from the interface according

to ISO 4401. The external pilot

supply and drain result from port X

and Y to the pilot valve. The

regulated control pressure is

proportional to the stroke of the main

stage. If one of the two solenoids is

energized, the pilot releases the

connection to control port A or B and

regulates the control pressure

according to the set solenoid current.

The main piston shifts until a balance

of force is reached by pressurizing

one of the two sides of the main

piston via control pressure. The

desired connection PABT or PBAT is

released.

If the valve is subsequently relieved

of pressure, the centring spring

returns the main piston to neutral

again.

P4WEH valves are available in two

different versions, which differ in their

interface. Due to this difference, the

valve versions are not compatible

with each other.

Designation

P4WEH 10: 12,42 x 1,78 90 Sh (5 pcs) FKM: 3524523

9,25 x 1,78 90 Sh (2 pcs) NBR: 3524475

P4WEH 16: 22,22 x 2,62 90 Sh (4 pcs) FKM: 3524634

10,82 x 1,78 90 Sh (2 pcs) NBR: 3524553

P4WEH 25: 29,82 x 2,62 90 Sh (4 pcs) FKM: 3524660

20,24 x 2,62 90 Sh (2 pcs) NBR: 3524659

P4WEH 32: 37,59 x 3,53 90 Sh (4 pcs) FKM: 3524690

20,24 x 2,62 90 Sh (2 pcs) NBR: 3524685

P4WEH 10: ISO 4762 M6 x 35 (4 pcs) 3524691

P4WEH 16: ISO 4762 M10 x 60 (4 pcs)

ISO 4762 M6 x 60 (2 pcs)

P4WEH 25: ISO 4762 M12 x 60 (6 pcs) 3524698

P4WEH 32: ISO 4762 M20 x 70 (6 pcs) 3524700

Control module EHCD* AM005XXXU 6158999

Part no.

Seal kits (main stage)

Mounting screws

ACCESSORIES

4501973

*For further information see brochure "Control modules for hydraulic drives -EHCD"

catalogue-24000.2/10/14 or contact customer support EHCD@hydac.com.

Switching time (0 → 100%):

Switching time (100% → 0):

Type of voltage:

Rated voltage:

Hysteresis:

Repeatability:

Protection class to DIN EN 60529:

According to EN ISO 13849-1:2015 chart C1 & C2

-20 to +60

No orientation restictions

Valve casing: Cast iron

Name plate: Aluminium

Valve casing: Phosphate

EN 5.231.3. 0/01.20

[ms]

[V]

[%]

12, 24

< 4 of Q

max

< ±2 of Q

max

with electrical connection “G“ IP65 ²

Port P: p

max

= 350

Port T, internal leak port: p

max

= 10

Port T, external leak port: p

max

= 250

min

= 30

max

= 210

Hydraulic oil to DIN 51524 part 1, 2 and 3

-20 to +80

10 – 400

class 18/16/13 to ISO 4406

NBR, FKM (standard)

TECHNICAL DATA ¹

General specifications

MTTF

Ambient temperature:

Installation position:

Weight:

Material:

Surface coating:

Hydraulic specifications

Operating pressure:

Control pressure:

Max. nominal flow:

Nominal flow ranges:

(at Δp = 10 bar, P → T)

Operating fluid:

Media operating temperature range:

Viscosity range:

Permitted contamination level

of operating fluid:

Sealing material:

Control flow:

(Control 0 → 100 %)

Control volume:

(Control 0 → 100 %)

[°C]

[kg]

[bar]

[l/min]

[°C]

[mm²/s]

[l/min]

[cm³]

Electrical specifications

¹ see „Conditions and Instructions for Valves“ in brochure 53.000

Hint

If the system pressure exceeds the max. allowable control pressure, it is necessary to use the version with external control and

control pressure within the specifications. Otherwise, the valve with internal pilot control and pressure reducing valve as 30 bar fixed

sandwich plate can be ordered.

Nominal size

7,5

9,7

16,0

53,0

Nominal size

180

80/40

1,7

450

100

150

150/75

3,2

800

200

300

300/150

9,1

1600

350

500

500/250

21,6

Nominal size

100

200

120

PERFORMANCE

The performance represent typical curves for the

various available valve pistons, at a constant Δp,

depending on the current supplied by the solenoid

coil.

(Note: The maximum current for the solenoid version

D24 is 800 mA).

The total valve pressure drop (Δp) was measured

between port P and T of the valve.

Q-I-performance NG10

(measured at 36 cSt, 50°C), symbols E; EA; EB; J;

JA; JB, nominal flow 80 l/min

EN 5.231.3. 0/01.20

Q-I-performance NG16

(measured at 36 cSt, 50°C), symbols E; EA; EB; J;

JA; JB, nominal flow 100 l/min

Nominal flow 150 l/min

Q-I-performance NG25

(measured at 36 cSt, 50°C), symbols E; EA; EB; J;

JA; JB, nominal flow 200 l/min,

Nominal flow 300 l/min

Q-I-performance NG32

(measured at 36 cSt, 50°C), symbols E; EA; EB; J; JA;

JB, nominal flow 350 l/min

PERFORMANCE

Nominal flow 500 l/min

INTERFACE

CETOP 4.2-4 P05-350 (D01)

INTERFACE

ISO 4401-05-05-0-05 (D02)

(CETOP 4.2-4 R05-350)

Mounting screws (ISO 4762): 4 pcs M6 x 35 A8.8 (not included in delivery)

Torque: 8 Nm

Hint

When using the pressure

reducing as sandwich plate, the

installation height changes by 40

mm to 180.5 mm.

DIMENSIONS NG10

EN 5.231.3. 0/01.20

standard manual

override

DIMENSIONS NG16

INTERFACE

ISO 4401-07-07-0-05 (D01)

(CETOP 4.2-4-07-350)

Mounting screws (ISO4762): 4 pcs M10x60 A8.8 (not included in delivery)

2 pcs M6 x 60 A8.8 (not included in delivery)

Torque: M10: 40 Nm

M6: 8 Nm

Hint

When using the pressure reducing as

sandwich plate, the installation height

changes by 40 mm to 190.5 mm.

EN 5.231.3. 0/01.20

standard manual

override

DIMENSIONS NG25

INTERFACE

ISO 4401-08-08-0-05 (D01)

(CETOP 4.2-4-08-350)

Mounting screws (ISO4762): 6 pcs M12x60 A8.8 (not included in delivery)

Torque: 69 Nm

Hint

When using the pressure reducing as

sandwich plate, the installation height

changes by 40 mm to 216.5 mm.

EN 5.231.3. 0/01.20

standard manual

override

DIMENSIONS NG32

INTERFACE

ISO 4401-10-09-0-05 (D01)

(CETOP 4.2-4-10-350)

Mounting screws (ISO4762): 6 pcs M12x70 A8.8 (not included in delivery)

Torque: 330 Nm

Hint

When using the pressure reducing as

sandwich plate, the installation height

changes by 40 mm to 272.2 mm.

EN 5.231.3. 0/01.20

standard manual

override

Plug

Control type Installation

E external pilot supply and drain

●●

EI external pilot supply, internal pilot

drain

●

IE internal pilot supply, external pilot

drain

●

I internal pilot supply and drain

• Version „E“ –

Pilot oil supply is external from a separate fluid power supply via port X.

The pilot oil drain is also external via port Y.

• Version „EI“ –

Pilot oil supply is external from a separate fluid power supply via port X.

The pilot oil drain is internal via port T.

• Version „IE“ –

Pilot oil supply is internal via port P.

The pilot oil drain is external via port Y.

• Version „I“ –

Pilot oil supply is internal via port P.

The pilot oil drain is internal via port T.

The valve is configured and delivered as required.

The threaded plugs are glued in at delivery.

Subsequent modification is not possible.

Note

The information in this brochure relates

to the operating conditions and

applications described. For applications

not described, please contact the

relevant technical department.

All technical details are subject to

change without notice.

HYDAC Fluidtechnik GmbH

Justus-von-Liebig-Str.

D-66280 Sulzbach/Saar

Tel: 0 68 97 /509-01

Fax: 0 68 97 /509-598

E-Mail: valves@hydac.com

EN 5.231.3. 0/01.20