ZDMVP
DESCRIPTION OF FUNCTION, SECTION
48
They comprise a
• housing (1) and a
• cartridge (2).
Pressure in the branch circuit is manually set by adjust-
ment mechanism (3).
Pressure reducing valves are normally open, permitting
fluid to flow from port P1 to P2. Pressure at port P2 is
applied on main spool (5), and via orifice (4), on the
spring-loaded side of main spool (5). If pressure at port
P2 exceeds the value set at spring (6), pilot poppet (7)
opens.
Fluid flows from the spring-loaded side of main spool (5)
through orifice (8) and pilot poppet (7) to spring
chamber (9) into tank. Main spool (5) modulates to
maintain pressure at port P2 constant.
Pressure reducing valves type ZDMVP10 are pilot
operated pressure r
educing valves in sandwich plate
design. They reduce pressure in a branch circuit lower
than that of the main circuit.
MODULAR VALVES
PRESSURE REDUCING
VALVES, PILOT OPERATED
49
ZDMVP
MODULAR VALVES
PRESSURE REDUCING
VALVES, PILOT OPERATED
SYMBOL AND PART NUMBERS
NG Q
max.
[l/min] DESIGNATION PART NUMBER
ZDMVP10A4PP2BS XZB10030-000-01
10
120 ZDMVP10A4PP2ES XZB10031-000-01
ZDMVP10A4PP2GS XZB10032-000-01
ORDERING INFORMATION
Subject to technical changes
ZDMVP
TECHNICAL DATA
50
General Data Value Unit Specifications
Designation - - Pressure reducing 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 (secondary pressure)
min. bar 0
max. bar up to 70, up to 175, up to 245
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
MODULAR VALVES
PRESSURE REDUCING
VALVES, PILOT OPERATED
PERFORMANCE CURVES
Δp-Q-Diagram
Δp [bar]
Pressure difference
p
E
-Q-Diagram
p
P2
[bar]
Secondary pressure
INSTALLATION DRAWING ZDMVP10A4PP__S
51
ZDMVP
Adjustment 2
Adjustment 8
MODULAR VALVES
PRESSURE REDUCING
VALVES, PILOT OPERATED
5 x O-Ring Viton 12,42x1,78 (Part number: X980-02014) Seal kit, complete: XEB17635-000-00
M version: 5 x Axial seal ring 15,7x11,7x1,5 (Part number: XE151214) Seal kit, complete: XEB17635-000M00
Int. hex socket SW 6
