ZDBDP
DESCRIPTION OF FUNCTION, SECTION
40
They comprise a
• housing (1)
• adjustment spring (2)
• adjustment mechanism (3)
• poppet (4) and a
• poppet sleeve (5).
Pressure relief valves are normally closed. Pressure at
port (7) acts upon the exposed surface area of poppet
(4). If the pressure at port (7) exceeds the value set on
adjustment spring (2), poppet (4) opens. Fluid flows
from the spring-loaded side of poppet (4) into tank.
These valves should be used only as pilot valves !
Pr
essure relief valves type ZDBDP10 are direct operated
poppet type valves in sandwich plate design. They limit
maximum pressur
e in a hydraulic system.
MODULAR VALVES
PRESSURE RELIEF VALVES
DIRECT OPERATED
41
ZDBDP
MODULAR VALVES
PRESSURE RELIEF VALVES
DIRECT OPERATED
ORDERING INFORMATION
SYMBOLS AND PART NUMBERS
NG Q
max.
[l/min] DESIGNATION PART NUMBER
10 40 ZDBDP10A4A
T2BS/MA XZB10133-000-01
10 40 ZDBDP10A4AT2GS/MA XZB10135-000-01
10 40 ZDBDP10A4AT2KS/MA XZB10136-000-01
Subject to technical changes
L 420 bar
K 420 bar series
A 350 bar series
10 40 XZB10320-000N01
N-ZDBDP10K4AT2LS/MA
ZDBDP
TECHNICAL DATA
PERFORMANCE CURVES
42
General Data Value Unit Specifications
Designation - - Pressure relief valve direct operated
Type designation - - see Ordering Information
Mode of construction - - Modular valve
Mounting pattern - - Size 05 (NG10) as per ISO 4401
Mounting dimensions - mm see Unit dimensions
Mounting position - - any
Nominal flow Q
N
l/min 30
Ambient temperature range
min. °C -25
max. °C +60
Working pressure
Inlet
min. bar 0
max. bar 420
Outlet
min. bar 0
max. bar 350
Fluid temperature range
min. °C -25
max. °C +80
Viscositiy range
min. mm
2
• s
-1
[cSt] 2,8
max. mm
2
• s
-1
[cSt] 380
Operational viscositiy ν mm
2
• s
-1
[cSt] 35
Weight m kg 3
MODULAR VALVES
PRESSURE RELIEF VALVES
DIRECT OPERATED
Δp-Q-Diagram
Δp [bar]
Pressure difference
p
E
-Q-Diagram
p
E
[bar]
Pressure setting
INSTALLATION DRAWING ZDBDP10A4AT_S/MA
43
ZDBDP
MODULAR VALVES
PRESSURE RELIEF VALVES
DIRECT OPERATED
5 x O-Ring Viton 12,42x1,78 (Part number: X980-02014); Seal kit, complete: XEB14764-000-00
for M version: 5 x Axial seal ring 15,7x11,7x1,5 (Part number: XE15214); Seal kit, complete: XEB14680-000-00
Int. hex socket SW 6
