IRV0.M27 VALVE SERIES

METRIC Insert - 400 bar

Direct acting - Poppet type

DESCRIPTION

The IRV valve provides in one compact insert cartridge the typical function of shock relief valve, side-in nose-exhaust. When the

pressure at the high pressure inlet (2) reaches the valve setting, the valve starts to open to tank (1). The pressure rise is very low

thanks to the smart deflector design. Flow passage in the opposite direction (1 to 2) is blocked. High precision machining

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

HYDRAULIC SYMBOL

VH054

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

150 l/min

MAXIMUM OPERATING PRESSURE

400 bar

WEIGHT

0,200 kg

SEAL KIT CODE

SK.021 (standard sealing NBR-BUNA-N)

OIL TESTING CONDITIONS

ISO VG 46 cSt

TECH. SPEC. FOR CHARACTERIZATION

see page 689

ORIENTATION

No restrictions

INSTALLATION TORQUE

70-80 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.24

MAXIMUM INTERNAL LEAKAGE

Pressure settings established

10 l/min

Reseat Pressure

nominal 90% of cracking pressure

I R V 0

ORDERING CODE

M 2 7 0

. .

* * *

Valve basic code

METRIC M27x1,5 with Ø20 nose size

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 20-100

B 101-180

G 181-250

V 251-320

W 321-400

RELIEF Valves

Specifications may change without notice.

1 2