ZDBVP
DESCRIPTION OF FUNCTION, SECTION
44
They comprise a
• housing (6)
• adjustment spring (4)
• adjustment mechanism (3)
• main poppet (1) and a
• pilot poppet (5).
Pressure relief valves are normally closed. Pressure
(shown in cross-section on port 8) acts upon both sides
of main poppet (1), via orifice (2), and also upon pilot
poppet (5). As the pressure on the exposed surface area
of pilot poppet (5) exceeds spring force (4), it opens
allowing pilot flow via orifice (2) and drain (7).
This pressure drop across main poppet (1), allows the
main flow into tank.
Pressure relief valves type ZDBVP10 are pilot operated
poppet type valves in sandwich plate design. They limit
maximum pressure in a hydraulic system.
MODULAR VALVES
PRESSURE RELIEF VALVES
PILOT OPERATED
45
ZDBVP
MODULAR VALVES
PRESSURE RELIEF VALVES
PILOT OPERATED
ORDERING INFORMATION
Subject to technical changes
SYMBOLS AND PART NUMBERS
NG Q
max.
[l/min] DESIGNATION PART NUMBER
ZDBVP10A4PT2BS XZB10072-000-01
10
120 ZDBVP10A4PT2GS XZB10074-000-01
ZDBVP10A4PT2KS XZB10075-000-01
ZDBVP10A4AT2BS XZB10060-000-01
10 120 ZDBVP10A4AT2GS XZB10062-000-01
ZDBVP10A4AT2KS XZB10063-000-01
ZDBVP10A4BT2BS XZB10064-000-01
10 120 ZDBVP10A4BT2GS XZB10066-000-01
ZDBVP10A4BT2KS XZB10067-000-01
ZDBVP10A4CT2BS XZB10068-000-01
10 120 ZDBVP10A4CT2GS XZB10070-000-01
ZDBVP10A4CT2KS XZB10071-000-01
ZDBVP10A4AB2BS XZB10056-000-01
10 120 ZDBVP10A4AB2GS XZB10058-000-01
ZDBVP10A4AB2KS XZB10059-000-01
ZDBVP
TECHNICAL DATA
PERFORMANCE CURVES
46
General Data Value Unit Specifications
Designation - - Pressure relief valve pilot 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
Flow max. Q
max.
l/min 120 (see performance limits)
Ambient temperature range
min. °C -25
max. °C +60
Working pressure
Inlet
min. bar 0
max. bar 350
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 2,5 => Version PT, AT, BT /
3,5 => V
ersion CT, AB
Δp-Q-Diagram
Pressure difference
p
E
-Q-Diagram
p
E
[bar]
Pressure setting
MODULAR VALVES
PRESSURE RELIEF VALVES
PILOT OPERATED
Δp [bar]
47
ZDBVP
MODULAR VALVES
PRESSURE RELIEF VALVES
PILOT OPERATED
INSTALLATION DRAWING ZDBVP10A4PT(AT,BT)_S/MA(MB)
INSTALLATION DRAWING ZDBVP10A4CT(AB)_S
Adjustment 2
Adjustment 8
Adjustment 2
Adjustment 8
5 x O-Ring Viton 12,42x1,78 (Part number: X980-02014) Seal kit, complete: XEB17627-000-00
M version: 5 x Axial seal ring 15,7x11,7x1,5 (Part number: XE151214) Seal kit, complete: XEB17627-000M00
5 x O-Ring Viton 12,42x1,78 (Part number: X980-02014)
Seal kit, complete: XEB17629-000-00 (CT), XEB17631-000-00 (AB)
M version: 5 x Axial seal ring 15,7x11,7x1,5 (Part number: XE151214)
Seal kit, complete: XEB17629-000M00 (CT), XEB17631-000M00 (AB)
Int. hex socket SW 6
Int. hex socket SW 6 Int. hex socket SW 6
