NZFDRP
DESCRIPTION OF FUNCTION, SECTION
28
They comprise a
• housing (1)
• guide nut (2)
• throttling screw (3)
• metering bush (4) and a
• spring (5).
Two symmetrically arranged throttle/check valves limit
flow by means of adjustable throttling spools in one
direction and give free return flow in the other. At
metering-out the fluid in line A2 reaches the line A1 via
the throttle position (6), a combination from the
metering bush (4) and the throttling screw (3). To set the
throttle orifice, use a 4 A/F hexagon key in the end (7) of
the self-locking throttling screw (3).
The 13 A/F locknut (8) provides additional security. Oil
flowing from the line A1 pushes the metering bush (4)
against the spring (5) and allows oil to flow freely from
line A1 to A2, operating as a check valve. By rotating the
valve about its long axis it can be mounted with either
of this two interface surfaces uppermost – one position
gives a METER-IN function, the other METER-OUT.
Valves type N-ZFDRP10 are double throttle/check valves
in sandwich plate design. They serve to limit a main or
pilot flow of one or two user ports.
MODULAR VALVES
THROTTLE CHECK
VALVES
NZFDRP
29
MODULAR VALVES
THROTTLE CHECK
VALVES
ORDERING INFORMATION
SYMBOLS AND PART NUMBERS
NG Q
max.
[l/min] DESIGNATION PART NUMBER
10 160 N-ZFDRP10A4A2CV XEB17470-000N01
10
160 N-ZFDRP10A4A2CS XEB17471-000N01
Subject to technical changes
NZFDRP
TECHNICAL DATA
PERFORMANCE CURVES
30
General Data Value Unit Specifications
Designation - - Throttle check valve
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 160 (see performance curves)
Ambient temperature range
min. °C -25
max. °C +60
Working pressure
Inlet
min. bar 0
max. bar 315
Outlet
min. bar 0
max. bar 315
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 2,9
Cracking pressure p
O
bar ca. 0,7 (in free flow direction)
MODULAR VALVES
THROTTLE CHECK
VALVES
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NZFDRP
INSTALLATION DRAWING N-ZFDRP10A4A2CV/S
31
MODULAR VALVES
THROTTLE CHECK
VALVES
5 x O-Ring NBR 12,42x1,78 (Part number: X783-00288); Seal kit, complete: XEB17583-000N00
N-ZFDRP10A4A2CS
N-ZFDRP10A4A2CV