RVI0.S08 VALVE SERIES
SAE08 Cartridge - 350 bar
Direct acting - Poppet type
Bi-directional
DESCRIPTION
A screw-in, cartrigde style, direct acting, poppet type, normally closed hydraulic bi-directional relief valve. It's typically used to
protect hydraulic components from pressure transients. The RVI valve blocks flow from either port 1 or port 2. When the pressure
differential between ports 1 and 2 reaches the valve setting, the valve starts to open, throttling flow to minimize the pressure rise,
regardless of the inlet flow direction. Both directions have very similar setting pressure performance. The cartridge offers excellent
response to load changes in hydraulic circuits requiring low internal leakage as well as limited hysteresis.
HYDRAULIC SYMBOL
SAE08
Cavity
Cross section
TECHNICAL DATA
5 cm
3
/ min to 70 % of nominal set point
EXTERNAL COMPONENT TREATMENT
Zn/Fe - standard (96h)
Zn/Ni (720h) (Upon customer request)
Setting pressure
see table below
MAXIMUM FLOW
30 l/min
MAXIMUM OPERATING PRESSURE
350 bar
WEIGHT
0,180 kg
SEAL KIT CODE
SK.030 (standard sealing NBR-BUNA-N)
OIL TESTING CONDITIONS
ISO VG 46 cSt
TECH. SPEC. FOR CHARACTERIZATION
see page 698
ORIENTATION
No restrictions
INSTALLATION TORQUE
40-45 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
Plastic tamper proof cap
CTP.003
MAXIMUM INTERNAL LEAKAGE
Pressure settings established
5 l/min
Reseat Pressure
nominal 80% of cracking pressure
NUT TINGHTENING TORQUE
10-15 Nm Hex.17
R V I 0
.
ORDERING CODE
S 0 8 0
*
. .
* * *
Valve basic code
3/4-16 UNF with Ø12,7 nose size
Size
Marking
0 = Standard factory marking.
Customized marking can be done
upon request.
000 = No specific setting required.
Spring
model code
Setting pressure
range (bar)
Pressure increment
per turn [bar/turn]
Y 20-35 10
N 36-80 25
B 75-170 47
G 125-260 67
V 260-350 93
Bias Spring Options
Setting pressure in [bar]
RELIEF Valves
Specifications may change without notice.
251 252
Rev. 1
RELIEF Valves
253 254
Rev. 1
RVI0.S08 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 Y - 1vs2 Spring Y - 2vs1
Spring N - 1vs2 Spring N - 2vs1
Spring B - 1vs2 Spring B - 2vs1
Spring V - 2vs1
Spring G - 1vs2 Spring G - 2vs1
Spring V - 1vs2
