Page 1147 - Softbound_Edition_19_en

Restrictor valve
Restrictor valves Restrictor valves

CHARACTERISTICS Oil viscosity υ = 30 mm /s Restrictor valve with reverse free flow check
2
∆p = f (Q) Pressure loss/flow characteristics Q = f (n) Volume flow adjustment characteristics Sandwich construction
(Standard) • Q = 100 l/min NG10
p [bar] Q [l/min] • Q = 60 l/min ISO 4401-05
max
25 K0450 70 K0452 N
60 ∆p = 20 bar • p max = 350 bar
20
50
15 40 ∆p = 10 bar DESCRIPTION FUNCTION APPLICATION
10 30 ∆p = 5 bar Restrictor valve sandwich type NG10 with Using the precision thread adjusting spind- Sandwich type, one-way restrictors are used
20 interface to ISO 4401-05. The non-return le, the restriction of the volume flow can be where volume flows have to be controlled
5 10 throttle valve is available in two different va- continuously adjusted. With the spindle fully in one flow direction according to the load.
0 0 riants, namely the standard and the precision screwed home, the volume flow is zero, and a Depending on the application, a distinction is
0 10 20 30 40 50 60 70 Q [l/min] 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 n [-] throttle (FD). The turning knob is made from metallic edge makes a leak-tight closure. In the made between restricting the forward flow or
aluminium, all other parts made of steel, have opposite direction, the spring-loaded tapered the return flow. These sandwich valves are
∆p = f (Q) Pressure loss/flow characteristics Q = f (n) Volume flow adjustment characteristics been phosphated. piston opens and volume flow with a load particularly suitable for machine tools and also
over non-return valve (Precision throttle) pressure drop is enabled. The throttle effect all kinds of handling operations.
p [bar] A PT B Q [l/min] A PT B is produced ba an annular gap which can be
25 K0451 70 K0453 varied in size, or by means of a triangular edge.
Because of the nature of the design, there is
20 60 ∆p = 20 bar only a small amount of leakage.
50
15 A PT B 40 A PT B ∆p = 10 bar
10 30 ∆p = 5 bar TYPE CODE
20 A URD 10 #
5 10 International standard interface ISO
0 A PT B 0 A PT B
0 10 20 30 40 50 60 70 Q [l/min] 0 1 2 3 4 5 6 n [-] Throttle check valve
Type list / function
DIMENSIONS
Meter-out in A A in B B
20 21,5 19 Meter-in in A and B VA in B VB
in A
17,8 in A and B V
Nominal size 10
T Standard
∅ 5,5 A B Precision throttle - FD
Meter-out 45 ∅ 35 31 21 32,5 Design-Index (Subject to change)
P

60 32
42 A=92 GENERAL SPECIFICATIONS HYDRAULIC SPECIFICATIONS
Denomination Restrictor valve with reverse free flow check Fluid Mineraoil, other fluid on request
B=92 Nominal size NG10 acc. to ISO 4401-05 Contamination efficiency ISO 4406:1999, class 20/18/14…21/19/15
49 120 49 Construction Sandwich (Required filtration grade ß 10…25 ≥ 75)
Mounting 4 mounting holes for socket head cap screws refer to data sheet 1.0-50/2
M6 or stud screws M6 Viscosity range 12 mm /s…320 mm /s
2
2
40 30 10 15 Connections Threaded connection plates, Multi-flange Fluid temperature -20...+70°C
subplates, Longitudinal stacking system Peak pressure p max = 350 bar
Ambient temperature -20…+50° C Pressure required to open
T
Mounting position any the check valve p = 0,8 bar
ö
A B Fastening torque M = 9,5 Nm (Qual. 8.8) for fastening screws Nominal volume flow rates Q = 60 l/min
D
N
Weight Depending on the type 1,8…2,3 kg Q at 10 bar valve pressure loss
Meter-in P Max. volume flow Q N = 100 l/min
max
Leakage volume flow Almost leak free with closed restrictor
VA=92
1,5 42 1,5 VB=92 TYPE LIST / FUNCTION
V=120 Meter-out: Meter-in:
PARTS LISTS AURDA10 AURDVA10 Valves for restricting the meter-in flow are
achieved by turning the meter-out valves
Position Article Description restrictors (lateral axis):
A PT B A PT B AURDA10 get AURDVB10
10 160.2076 O-ring ID 7,65x1,78 AURDB10 get AURDVA10
15 160.2120 O-ring ID 12,42x1,78 AURDB10 AURDVB10 AURD10 get AURDV10
in line with check valve Valves for restricting the meter-in flow
20 114.1201 Turning knob A PT B A PT B are supplied with a sealing plate and an
30 173.3650 Sealing plate ADB6 in-termediate plate.
40 173.3700 Intermediate plate AZB6 AURD10 AURDV10
Technical explanation see data sheet 1.0-100
A PT B A PT B
Wandfluh AG Tel. +41 33 672 72 72 E-mail: sales@wandfluh.com Illustrations not obligatory Data sheet no. Wandfluh AG Tel. +41 33 672 72 72 E-mail: sales@wandfluh.com Illustrations not obligatory Data sheet no.
Postfach Fax +41 33 672 72 12 Internet: www.wandfluh.com Data subject to change 2.4-850E 2/2 Postfach Fax +41 33 672 72 12 Internet: www.wandfluh.com Data subject to change 2.4-870E 1/2
CH-3714 Frutigen Edition 21 32 CH-3714 Frutigen Edition 09 42
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54
20 48
20,8

P
1,5
A B 16,8
∅ 6,5 60 ∅ 35 46 T To
9,7

66 40
38
A=106
B=106
49 132 49
40 30 10 15

P
A B
T To

VA=106
1,5 38 1,5 VB=106
V=132