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108
Pressure Relief Valve
Spool Type, Pilot-Operated
SAE-16 Cartridge – 350 bar
DB16P
300 l/min
350 bar
The DB16P is a pilot-operated, spool
type pressure relief valve. If the pressure
at port 1 exceeds the pressure setting,
the pilot poppet opens, creating a small
ow over the orice of the pilot stage to
the tank. The pressure drop across the
orice lifts the main spool against a light
spring, opening the connection between
port 1 and port 2.
FEATURES
z External surfaces zinc-plated and corrosion-proof
z Hardened and ground internal valve components to ensure minimal wear and
extended service life
z Excellent stability throughout the entire ow range
z Low pressure drop due to CFD optimized ow path
z Screen protected metering orice enhances safety
z Optional spring ranges up to 345 bar
z Adjustable throughout ow range
z Quick response
FUNCTION
SPECIFICATIONS
Operating pressure: max. 350 bar
Nominal ow: max. 300 l/min
Operating pressure ranges: 5 to 35 bar
5 to 60 bar
5 to 125 bar
5 to 230 bar
5 to 345 bar
Internal leakage: max. 1300 ml/min at 80 % of p
Nom. pressure
Media operating temperature range: min. -30 °C to max. +100 °C
Ambient temperature range: min. -30 °C to max. +100 °C
Operating uid: Hydraulic oil to DIN 51524 Part 1 and 2
Viscosity range: min. 7.4 mm²/s to max. 420 mm²/s
Filtration: Class 21/19/16 to ISO 4406
or cleaner
Installation: No orientation restrictions
Materials: Valve body: free-cutting steel
Spool: hardened and
ground steel
Seals: NBR (standard)
FKM (optional, media
temperature range
-20 °C to +120 °C)
Support rings PTFE
Cavity: FC16-2
Weight: 0.47 kg
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MODEL CODE
DB16P-01 – C – N – 180 V 100
Basic model
Pressure relief valve, UNF
Body and Ports*
C = Cartridge only
SB8 = G1 ports, steel body
AB8 = G1 ports, aluminium body
Seals
N = NBR
V = FKM
Setting pressure range
050 = 5 to 35 bar
090 = 5 to 62 bar
180 = 5 to 124 bar
330 = 5 to 228 bar
500 = 5 to 345 bar
Other pressure ranges on request
Type of adjustment
V = Allen head (hex. 5/32")
H = Knob adjustment
F = Factory preset, non adjustable
K = Allen head (hex. 5/32") with protective cap
Opening pressure setting
No details = no setting, spring relaxed
100 = customer-specic opening pressure on request
CAVITY
FC16-2
DIMENSIONS
Form tools
Tool Part No.
Rougher FC16-2 176218
Reamer FC16-2 176219
millimeter (inch)
subject to technical modications
millimeter (inch)
subject to technical modications
PERFORMANCE
Relieving pressure [bar]
Flow rate
Measured at ν = 34 mm²/s, T
Oil
= 46 °C
thick
hex. SW1 1/2"
torque
130 -180 Nm
SW 13
1/2" hex
SW 4
5/32" hex
Standard models
Model code Part No.
DB16P-01-C-N-090V 3010799
DB16P-01-C-N-330V 3010800
DB16P-01-C-N-500V 3010794
*Standard in-line bodies
Code Part No. Material Ports Pressure
FH162-SB8 3032496 Steel, zinc-plated G1 420 bar
FH162-AB8 3037193 Aluminium, anodized G1 210 bar
Seal kits
Code Material Part No.
FS162-N Seal Kit NBR 3052427
FH162-V Seal kit FKM 3051758
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
Note
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
modications.
