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244
Check Valve, Pilot-to-Open
SAE 08-Cartridge – 420 bar
RP08A-01
38 l/min
420 bar
The RP08A allows ow from port 2 to
1 and blocks ow from port 1 to 2 until
sufcient pressure is present at port 3 to
permit ow.
Features
Exposed surfaces zinc-plated and corrosion-proof
All valve parts made of high-strength steel with hardened and ground
components to ensure minimal wear and extended service life
Low pressure drop due to CFD optimized ow-path
Spring return at pilot stage for safe valve operation
Quick response
Low leakage design
Optional sealed pilot
Function
speciFications
Operating pressure: max. 420 bar
Nominal ow: 38 l/min
Internal leakage: 0.1 cc/min
Standard cracking pressure: 1.00 bar
Pilot ratio: 3:1 ; 4:1
Media operating temp. range: -20 °C to +100 °C
Ambient temperature range: -20 °C to +80 °C
Fluids: Hydraulic oil to DIN51524 part 1+2
Viscosity: 7.4 to 420 mm²/s
Filtration: Class 21/19/16 according
to ISO 4406 or cleaner
Material: Valve body: steel
Pilot: steel
Poppet: hardened and
ground steel
Seals: NBR (Standard)
FKM (Optional)
Cavity: FC08-3
Weights: 0.088 kg
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245
perFormance
model code
RP08A-01 - C - NS - 15- 4
Basic model
Body and Ports*
C = Cartridge only
SB3 = 3/8 BSP ports, steel body
AB3 = 3/8 BSP ports, aluminium body
Seals
N = NBR
NS = NBR with Piston Seal
V = FKM
VS = FKM with Piston Seal
Cracking Pressure
15 = 1 bar (15 PSI)
Pilot Ratio
3 = 3:1
4 = 4:1
dimensions
millimeter (inch)
technical modications reserved
cavity
FC08-3
Form tools
Tool Part No.
Rougher FC08-3 175644
Finisher FC08-3 175645
7/8" hex torque 25 - 30 ft-lbs
thick
Pressure
Flow rate
Pressure
Flow rate
Measured at n = 34 mm²/s
T
Oil
= 46 °C
Measured at n = 34 mm²/s
T
Oil
= 46 °C
phi=3:1
phi=4:1
HYDAC Fluidtechnik GmbH
Justus-von-Liebig-Str.
D-66280 Sulzbach/Saar
Tel: 0 68 97 /509-01
Fax: 0 68 97 /509-598
E-Mail: utec@hydac.com
The information in this brochure
relates to the operating conditions
and applications described.
For applications or operating
conditions not described, please
contact the relevant technical
department.
Subject to technical modications.
NOTE
millimeter (inch)
technical modications reserved
Standard models
Model code Part No.
RP08A-01-C-N-15-3 561916
RP08A-01-C-N-15-4 561918
RP08A-01-C-NS-15-3 561917
RP08A-01-C-NS-15-4 561919
other models on request
Seal kits
Code Part No.
FS083-N Seal kit 3054795
FS083-V Seal kit 2591059
* Standard line bodies
Code Part No. Material Ports Pressure
FH083-SB3 560922 Steel, zinc-plated 3/8 BSP 420 bar
FH083-AB3 3011427 Aluminium, clear anodized 3/8 BSP 245 bar
other housings on request
pilot open
free ow
free ow
pilot open