Relief Valves
Symbol
Cross Section
134
SAE10 Cartridge - 350 bar
Direct acting - Poppet type
RVS0.S10 Valve Series
Technical Features
Description
All external surfaces are zinc plated and corrosion-proof. All val-
ve parts are made of high strength steel. Poppet is hardened
and ground to guarantee minimal wear and to extend service life.
Adjustment screw cannot be backed out of the valve. Positive
stop prevents springs from going solid. Optional spring ranges to
350 bar (5000 psi). Industry common cavity.
A screw-in, cartridge style, direct acting, poppet type,
normally closed hydraulic relief valve. It’s typically
used to protect hydraulic components from pressure
transients. When the pressure at the Inlet (1) reaches
the valve setting, the valve starts to open to tank (2)
throttling flow to minimize the pressure rise. The in-
novative geometry of the deflector provides in fact a
very low rise rate, and the poppet design guarantees
great stability. The cartridge offers quick response to
load changes in hydraulic circuits requiring low inter-
nal leakage as well as limited hysteresis. NOTE: the
RVS0 in the standard conguration can be used in
crossover relief applications.
SAE10
Cavity Details
Technical Data
135
Specications may change without notice.
Maximum operating pressure 350 bar
Maximum flow 80 l/min
Setting Pressure See table below
Maximum internal leakage 0,25 cm
3
/min to 80% of nominal set point
External component treatment
Zn/Fe - standard (96h)
Zn/Ni (720h)
O-ring Temperature Range -30° C to 110° C (standard sealing NBR - BUNA-N)
Oil Temperature Range -30° C to 110° C
Pressure settings established @5 l/min
Reseat pressure nominal 90% of cracking pressure
Fluids Mineral - based or synthetics with lubricating properties
Viscosities 7,4 to 420 cSt
Filtration 20/18/15 ISO 4406 (maximum ltration admitted)
Orientation No restrictions
Installation torque 55-65 Nm (Hex. 24)
Tightening torque nut 25-30 Nm (Hex. 19)
Technical specications for characterization See page 480
Oil testing condition ISO VG 46 cSt
Seal kit code SK.001
Plastic tamper proof cap CTP.001 (for more details see page 428-429)
Weight 0,170 kg
The nose of the valve protrudes
by 7,6 mm into ID 12 mm o
f the cavity.
Ordering Code
Design Note
Relief Valves
Springs’ Graphs
1
2
p/Q performance
p/Q performance
136
Flow (l/min)
Flow (l/min)
Pressure (bar)
Pressure (bar)
Spring = B (76 - 125bar)
Spring = N (25 - 75bar)
RVS0.S10 Valve Series
Note: The performance chart illustrates flow handling capacity for each
spring bias options. p/Q curves are recorded at TOil = 40°C and 46 cSt
p/Q performance
p/Q performance
3
4
137
Flow (l/min)
Flow (l/min)
Pressure (bar)
Pressure (bar)
Specications may change without notice.
Spring = W (221 - 350bar)
Spring = G (126 - 220bar)
