Pilot Check Valves
Description
Symbol
Cross Section
Cavity Details
68
Technical Features
Normally closed, dual pilot check valve.
Cartridge is closed until sufcient pres-
sure is applied on port 1 to reach the bias
spring setting, lift the poppet and allow free
flow to 2. The valve is normally closed from
2 to 1. When sufcent pressure is applied
on port 3, the pilot piston lifts the poppet
from its seat and allows flow from 2 to 1.
Very limited leakage in the check condition.
All external surfaces are zinc plated and cor-
rosion-proof. All valve parts are made of high
strength steel. Poppet is hardened and ground to
guarantee minimal wear and to extend service life.
Pilot piston is hardened and ground, sealed to pre-
vent leakage. Optional bias springs for back-pres-
sure application flexibility. Industry commonly
used hybrid cavity.
VH032
Hybrid SAE10 Cartridge - 350 bar
Direct acting check valve
Pilot piston to open
DPC5.S10 Valve Series
Performance Details
69
Specications may change without notice.
Technical Data
Pressure (bar)
Flow (l/min)
Ordering Code
Maximum operating pressure 350 bar
Maximum flow 30 l/min
Maximum Internal Leakage
0,10 cm
3
/ min @ 10 bar
0,10 cm
3
/ min @ 350 bar
External component treatment
Zn/Fe - standard (96h)
Zn/Ni (720h)
Pilot ratio 7:1
O-ring Temperature Range -30° C to 110° C (standard sealing NBR - BUNA-N)
Oil Temperature Range -30° C to 110° C
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 80-85 Nm
Technical Specications for characterization see page 480
Oil testing condition ISO VG 46 cSt
Seal kit code SK.036
Weight 0,255 kg
Note: The performan-
ce chart illustrates flow
handling capacity for each
spring options. p/Q curves
are recorded at TOil = 40°C
and 46 cSt