Pressure Reducing Valves
Description
Symbol
Cross Section
Cavity Details
264
SAE08-2
Technical Features
SAE Cartridge - 350 bar
Direct acting - Spool Type
PRV0.S08 Valve Series
All external surfaces are zinc plated and corrosion-proof.
All valve parts are made of high strength steel. The spool
is hardened and ground and the cage is super-nished to
guarantee minimal wear and to extend service life. Fixed
pressure setting. Industry common cavity.
A screw-in, cartridge style, direct acting, poppet type,
hydraulic pressure reducing and relieving valve with
internal spring chamber drain. When the pressure at
port (1) is below the valve setting, the valve allows
the flow to pass bidirectionally from (1) to (2). When
the pressure at port (1) exceeds the valve setting, the
spool shifts to restrict the flow at port (2), relieving or
reducing the pressure at port (1) depending on the
flow direction. A further pressure increase in port (1)
causes the spool to shift against the spring so that
the flow is relieved to tank (3). he system is self-re-
gulated and stable thanks to an appropriate negative
feedback. The spring chamber is constantly drained
to tank.
Ordering Code
265
Specications may change without notice.
Performance Details
Technical Data
Flow (l/min)
Flow (l/min)
p/Q curve (fully open)
Working characteristics: Reducing 2-> 1
Relieving 1->3
Pressure (bar)
Pressure (bar)
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
Maximum operating pressure 350 bar
Maximum flow 20 l/min
Maximum internal leakage (1 to 3) 100 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 setting established @5 l/min
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 45-50 Nm
Technical specications for characterization See page 480
Oil testing condition ISO VG 46 cSt
Seal kit code SK.035
Weight 0,108 kg
