IRR0.M18 VALVE SERIES

METRIC Insert - 420 bar

Direct acting with anti-cavitation

Poppet type

DESCRIPTION

The IRR valve combines in one compact insert cartridge the typical function of shock relief valve and anticavitation through the

check valve. In the pressure relief function it’s a side-in nose-exhaust valve, with very low pressure rise thanks to the smart deflector

design. When the pressure at the high pressure inlet (2) reaches the valve setting, the valve starts to open to tank (1). In the free

reverse flow function a very light bias spring allows for ease of flow passage from nose to side (1 to 2). High precision machining

guarantees quick response to load changes, limited hysteresis and reduced internal and external leakage.

HYDRAULIC SYMBOL

VH002

Cavity

Cross section

TECHNICAL DATA

1 cm

/ min at 80 % of nominal set point

EXTERNAL COMPONENT TREATMENT

Zn/Fe - standard (96h)

Zn/Ni (720h) (Upon customer request)

Setting pressure

see table below

MAXIMUM FLOW

60 l/min

MAXIMUM OPERATING PRESSURE

420 bar

WEIGHT

0,120 kg

SEAL KIT CODE

SK.005 (standard sealing NBR-BUNA-N)

OIL TESTING CONDITIONS

ISO VG 46 cSt

TECH. SPEC. FOR CHARACTERIZATION

see page 700

ORIENTATION

No restrictions

INSTALLATION TORQUE

35-40 Nm

FILTRATION

20/18/15 ISO 4406 (maximum filtration admitted)

VISCOSITIES

7,4 to 420 cSt

FLUIDS

Mineral - based or synthetics with lubricating properties

OIL TEMPERATURE RANGE

-30° C to 110° C

O-RING TEMPERATURE RANGE

-35° C to 140° C (HNBR - Upon customer request)

-30° C to 110° C (standard sealing NBR - BUNA - N)

-23° C to 225° C (FKM - Upon customer request)

Hex.17

MAXIMUM INTERNAL LEAKAGE

Anti-cav cracking pressure

<0,5 bar

Pressure settings established

10 l/min

Reseat Pressure

nominal 90% of cracking pressure

NUT TINGHTENING TORQUE

2-4 Nm Hex.2,5

Coining kit

CK.002

I R R 0

ORDERING CODE

M 1 8 0

. .

* * *

Valve basic code

METRIC M18x1,5

Size

Marking

0 = Standard factory marking.

Customized marking can be done

upon request.

Standard setting are multiple of 5

bars.

Bias Spring Options

Setting pressure in [bar]

Spring

model code

Setting pressure

range (bar)

N 20-70

B 71-130

G 131-210

V 211-280

W 281-350

R 351-420

RELIEF Valves

Specifications may change without notice.

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