IRA0.M16 VALVE SERIES
METRIC Insert - 350 bar
Direct acting with anti-cavitation
Poppet type
DESCRIPTION
The IRA 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
VH004
Cavity
Cross section
TECHNICAL DATA
1 cm
3
/ 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
40 l/min
MAXIMUM OPERATING PRESSURE
350 bar
WEIGHT
0,040 kg
SEAL KIT CODE
SK.008 (standard sealing NBR-BUNA-N)
OIL TESTING CONDITIONS
ISO VG 46 cSt
TECH. SPEC. FOR CHARACTERIZATION
see page 698
ORIENTATION
No restrictions
INSTALLATION TORQUE
25-30 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.15
MAXIMUM INTERNAL LEAKAGE
Anti-cav cracking pressure
<0,5 bar
Pressure settings established
10 l/min
Reseat Pressure
nominal 90% of cracking pressure
Coining kit
CK.001
I R A 0
.
ORDERING CODE
M 1 6 0
*
. .
* * *
Valve basic code
METRIC M16x1
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)
Y 15-25
N 26-50
B 51-100
G 101-150
V 151-250
W 251-350
RELIEF Valves
Specifications may change without notice.
259 260
Rev. 1
RELIEF Valves
261 262
Rev. 1
IRA0.M16 SPRINGS' GRAPHS
The performance chart illustrates flow handling capacity for significant spring
bias options.
p/Q curves are recorded at TOil = 40°C and 46 cSt.
Legend
Minimum setting pressure range
Medium setting pressure range
Maximum setting pressure range
Spring B
Spring G
Spring Y
Spring N Spring W
Spring V
Anti-cavitation function
