E 5.990.2.0/12.10

480

Proportional Pressure

Reducing Valve

SAE 08-Cartridge – 350 bar

PDR08-01

Spool Type – direct operated

12 l/min

350 bar

The PDR08-01 is a direct acting 3 port

pressure reducing valve with outlet

pressure relief. In the de-energized

mode the inlet port 2 is closed and

the outlet port 1 is connected to the

tank (port 3). When a current signal is

applied, the solenoid armature presses

onto the control spool with a force

corresponding to the amount of current

and sets the reduced pressure at port 2.

This setting is proportional to the amount

of current applied. Port 3 is vented to

tank - any pressure at port 3 is additive

to the setting.

Features

 All surfaces zinc-plated and corrosion proof

 All valve parts made of high-strength steel with hardened and ground

components to ensure minimal wear and to extend service life

 Rigid design using one-piece body minimizes the effect of eccentricity and

maximizes reliability

 Waterproof design standard

 Wide variety of connectors available

 Excellent stability throughout ow range

 Excellent dynamic performance

 Low pressure drop by CFD optimized ow-path

FuNctION

specIFIcatIONs

Operating pressure: max. 350 bar at port 2

Nominal ow: max. 12 l/min

Operating pressure ranges: up to 14 bar, up to 20 bar, up to 35 bar,

up to 48 bar, up to 75 bar, up to 138 bar

Control current range: 1050 mA, 8.8 Ω / 2100 mA, 2.2 Ω

Internal leakage: less than 50 cm³/min at 350 bar

Media operating temp. range: -20 °C to +120 °C

Ambient temp. range: -20 °C to +60 °C

Dither frequency: 140 Hz - 250 Hz

Response time: On: approx. 40 ms, Off: approx. 30 ms

Hysteresis with dither: 2 - 4 % of maximum control current

Repeatability: ≤ 2 % of maximum pressure range

Reversal error: ≤ 2 % of maximum control current

Response sensitivity: ≤ 1 % of maximum control current

Fluids: Mineral-based or synthetics with

lubricating properties

Viscosity: 7.4 to 420 mm²/s

Filtration: Class 18/16/13 up to 19/17/14 according

to ISO 4406 or cleaner

Installation: no orientation restrictions

Material: Valve body: carbon steel

Spool: carbon steel

Seals: NBR (standard)

FKM (optional)

Coil: Steel / Polyamide

Notes:

The PDR08 can also be supplied with an emergency pressure adjustment (version

-01M). This allows a mechanical pressure adjustment of the valve if the electrical signal

is interrupted. This adjustment should be used only in the case of electrical failure since

the manual setting would be additive to the electrical setting and the danger of equipment

damage could develop.

In order to achieve optimal function, any trapped air should be vented with the bleed

screw on the face of the tube (not tted to version -01M).

Cavity: FC08-3

Weights: Valve complete: 364 g

Coil only: 190 g

E 5.990.2.0/12.10

481

perFOrmaNce

mOdel cOde

 PDR08–01M-C-N-110-24PG-8.8

Basicmodel

Option

Omission = No option

M = Emergency pressure adjustment

BodyandPorts*

C = Cartridge only

SB3 = 3/8 BSP ports, steel body

SS6 = SAE-6 ports, steel body

AB3 = 3/8 BSP ports, aluminium body

AS6 = SAE-6 ports, aluminium body

Seals

N = NBR

V = FKM

Pressurerange

20 = up to 14 bar

30 = up to 20 bar

50 = up to 35 bar

70 = up to 48 bar

110 = up to 75 bar

200 = up to

138

bar

Coilvoltage

12 = 12 V (2.2 Ω)

24 = 24 V (8.8 Ω)

Coilconnector

PG = DIN connector (EN175301-803)

PL = Leadwires (2) – 457 mm (18") long

PN = Deutsch Connector DT04-2P-EP04 (axial)

PU = AMP Junior Timer, 2 pole, axial

Coilresistance

2.2 = 2.2 Ω (12 V)

8.8 = 8.8 Ω (24 V)

dImeNsIONs

caVItY

FC08-3

Regulating

pressure

measured at ν = 34 mm²/s, T

oil

= 46 °C

Emergency pressure

adjustment

Torque 10-11 Nm

After loosening knurled nut,

coil can be rotated through

360 ° and removed.

Flow rate

Pressure drop

2 to 1

% of max. Control current

7/8'' Hex

Torque 25-30 Nm

thick

HYDACFluidtechnikGmbH

Justus-von-Liebig-Str.

D-66280Sulzbach/Saar

Tel: 0 68 97 /509-01

Telefax. 0 68 97 /509-598

E-Mail: utec@hydac.com

The information in this brochure

relates to the operating conditions

and applications described. For

applications or operating conditions

not described, please contact the

relevant technical department.

Subject to technical modications.

NOTE

Millimeter (inch)

Subject to technical modications.

*StandardLineBodies

Code PartNo Material Ports Pressure

FH083-SB3 560922 Steel, zinc-plated BSP 3/8 420 bar

FH083-SS6 560920 Steel, zinc-plated SAE-6 420 bar

FH083-AB3 3011427 Aluminium, clear anodized BSP 3/8 245 bar

FH083-AS6 3011424 Aluminium, clear anodized SAE-6 245 bar

Standardmodels

Modelcode  Stockno.

PDR08-01-C-N-20-12PG-2.2 3111707

PDR08-01-C-N-110-12PG-2.2 3111705

PDR08-01-C-N-200-12PG-2.2 3111728

PDR08-01-C-N-20-24PG-2.2 3109439

PDR08-01-C-N-110-24PG-2.2 3111706

PDR08-01-C-N-200-24PG-2.2 3111729

Venting Screw

Torque 0.9-1 Nm

Torque 4-6 Nm

Flow rate

Formtools

Tool PartNo

Rougher FC08-3 175644

Finisher FC08-3 175645

(without emergency

pressure adjustment)

(without emergency

pressure adjustment)

Cartridge & Body

Body only

No control current

50 % max. Control current

75 % max. Control current

100 % max. Control current

% of max.

Regulating pressure

Cartridge

only

Millimeter (inch)

Subject to technical modications.