EN 5.161.16/05.20

Pressure relief valve

poppet type, direct-acting

Metric Cartridge – 630 bar

DB4E-01

up to 30 l/min

up to 630 bar

The pressure relief valve is a direct-acting,

spring-loaded poppet valve. Its function is to

relieve pressure in the system. The spring

exerts a force on the poppet and presses it

onto the valve seat. If the hydraulic pressure

is below the pre-set spring tension, the valve

is closed. When the hydraulic force exceeds

the pre-set spring tension, the valve opens

and allows ow to the tank via port 2.

Important: Pressures at port 2 are additive

to the opening pressure! If the connections

are incorrect or if the pressure has been set

above the operating pressure, the function of

the valve is disabled.

To ensure that stable operation is maintained,

the poppet is securely located in the damping

piston which produces a damping force,

opposing the direction of movement, and this

has a stabilizing eect.

FEATURES

z Excellent stability throughout the entire ow range

z Low hysteresis and good repeatability

z Various pressure ranges with wide adjustability, up to 630 bar high pressure

z Large choice of adjustment options

z Exposed surfaces zinc-nickel plated for increased corrosion protection

(1.000 h salt spray test)

FUNCTION

SPECIFICATIONS*

Operating pressure: max. 630 bar

Tank pressure: max. 100 bar

Nominal ow: 30 l/min

Operating pressure ranges: 4 to 30 bar

10 to 100 bar

10 to 200 bar

10 to 250 bar

20 to 350 bar

30 to 630 bar

Internal leakage: max. 5 drops/min (0,25 cm³/min) at 80%

of setting pressure

Media operating temperature range: min. -20 °C to max. +120 °C

Ambient temperature range: min. -20 °C to max. +120 °C

Operating uid: Hydraulic uids according to DIN 51524

Part 1, 2 and 3

Viscosity range: min. 7.4 mm²/s to max. 420 mm²/s

Filtration: Class 21/19/16 according to ISO 4406 or

cleaner

MTTF

: 150 - 1200 years

according to DIN EN ISO 13849-1

Installation: No orientation restrictions

Materials: Valve body: steel

Piston: hardened and

ground steel

Seals: FKM (standard)

NBR (optional, media

temperature range

-30 °C to +100 °C)

Back-up rings: PTFE

Cavity: 06020

Weight: 0.16 kg

Adjustment

device

Valve body

Spring

Spring-plate

with hydrodyn.

lift support

Poppet

with damping

piston

Valve seat

* see "Conditions and instructions for valves" in brochure 53.000

EN 5.161.16/05.20

MODEL CODE

DB4E – 01 X – 350 F 315

Basic model

Pressure relief valve, metric

Type

01 = standard

Series

determined by the manufacturer

Setting pressure range

30 = 4 to 30 bar

100 = 10 to 100 bar

200 = 10 to 200 bar

250 = 10 to 250 bar

350 = 20 to 350 bar

630 = 30 to 630 bar

Other pressure ranges on request

Type of adjustment

V = Allen head (standard)

F = xed setting, cannot be adjusted

P = can be lead-sealed, adjustable with tool

M = maximum pressure relief, adjustable with tool

S = plastic knob, adjustable by hand, no scale

A = adjustable, with locking E10, cyl. lock 2H

FP = adjustable, with colored plastic cap

Other types of adjustment on request

Opening pressure setting

No details = no setting, spring relaxed

315 = opening pressure in bar, factory pre-set,

Setting on request

Standard models

Code Part No.

DB4E-01X-30V 716000

DB4E-01X-100V 716001

DB4E-01X-200V 716002

DB4E-01X-250V 716143

DB4E-01X-350V 716003

DB4E-01X-630V 716004

Other models on request

Standard in-line bodies

Code Part No. Material Ports Pressure

R06020-01X-01 275266 Steel, zinc-plated G 3/8 420 bar

Other line bodies on request

Seal kits

Code Part No.

SEAL KIT 06020-FKM 3262477

SEAL KIT 06020-NBR 3119017

TYPICAL PERFORMANCE

Pressure range ... 30 bar

inlet pressure p [bar]

Pressure range ... 100 bar

inlet pressure p [bar]

Pressure range ... 200 bar

inlet pressure p [bar]

lowest setting pressure

Pressure range ... 250 bar

inlet pressure p [bar]

lowest setting pressure

Q [l/min]

lowest setting pressure

EN 5.161.16/05.20

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

NOTE

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.

Pressure range ... 350 bar

Pressure range ... 630 bar

lowest setting pressure

inlet pressure p [bar]inlet pressure p [bar]

Q [l/min]

CAVITY

06020

SW21

torque:

Steel manifold

(ultimate tensile strength < 360 N/mm²):

35 Nm

Aluminium manifold

(ultimate tensile strength < 330 N/mm²):

30 Nm

(tool acc. to DIN EN ISO 6789,

tool type II class A or B)

For further informations see brochure

No. 53.000

"Conditions and instructions for valves"

Millimeter

Subject to technical modications

Millimeter

Subject to technical modications

Form tools

Tool Part No.

Countersink 170033

Reamer 1000768

Tap 1002648

Plug gauge 168840

DIMENSIONS

Type of adjustment

F V P M S A

tting depth

VE = Visual Examination

* Allowed drilling zone (for manifold design)

** Sharp edges should be avoided by rounding

to a radius of 0.1 mm to 0.2 mm

*** largest pre-drilling diameter

(nominal tool diameter)

EN 5.161.16/05.20