Page 1144 - Softbound_Edition_19_en

Restrictor valves Restrictor valves
Restrictor valve

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 = 70 l/min NG6
max
p [bar] Q [l/min] • Q = 40 l/min ISO 4401-03
25 K0150 20 K0147 ∆ p = 20 bar • p N = 350 bar
20 15 max
15 ∆ p = 10 bar
10 ∆ p = 5 bar DESCRIPTION FUNCTION APPLICATION
10 Restrictor valve sandwich type NG6 with Using the precision thread adjusting spind- Sandwich type, one-way restrictors are used
5
5 interface to ISO 4401-03. The non-return le, the restriction of the volume flow can be where volume flows have to be controlled
0 0 throttle valve is available in two different va- continuously adjusted. With the spindle fully in one flow direction according to the load.
riants, namely the standard and the precision
screwed home, the volume flow is zero, and
Depending on the application, a distinction is
0 5 10 15 20 Q [l/min] 0 0.5 1 1.5 2 2.5 3 3.5 n [-]
∆p = f (Q) Pressure loss/flow characteristics Q = f (n) Volume flow adjustment characteristics throttle (FD). The turning knob is made from a metallic edge makes a leak-tight closure. In made between restricting the forward flow or
the return flow. These sandwich valves are
the opposite direction, the spring-loaded tape-
aluminium, the sandwich plate made of steel
over non-return valve (Precision throttle) is zinc-nickel coated. red piston opens and volume flow with a load particularly suitable for machine tools and also
p [bar] Q [l/min] pressure drop is enabled. The throttle effect all kinds of handling operations.
25 K0151 25 K0148 is produced ba an annular gap which can be
∆ p = 20 bar
20 20 varied in size, or by means of a triangular edge.
Because of the nature of the design, there is
15 15 ∆ p = 10 bar only a small amount of leakage.
10 10 ∆ p = 5 bar
5 5 TYPE CODE
0 0 A URD 6 #
0 5 10 15 20 Q [l/min] 0 1 2 3 4 5 n [-] International standard interface ISO
Q = f (n) Volume flow adjustment characteristics
(Precision throttle) Throttle check valve
Q [l/min] Type list / function
A PT B A PT B ∆ p = 20 bar
0.4 K0149 Meter-out in A A in B B
in A and B
0.3 ∆ p = 10 bar Meter-in in A VA in B VB
PARTS LISTS ∆ p = 5 bar in A and B V
A PT B 0.2 A PT B
Position Article Description Nominal size 6
0.1 Standard
10 160.2052 O-ring ID 5,28x1,78 Precision throttle - FD
15 160.2067 O-ring ID 6,75x1,78 0
A
in line with check valve PT B 0 0.5 A 1 PT 1.5 B 2 2.5 n [-] Design-Index (Subject to change)
20 114.1204 Turning knob
30 173.1650 Sealing plate BDB4 GENERAL SPECIFICATIONS HYDRAULIC SPECIFICATIONS
40 173.1700 Intermediate plate BZB4 Technical explanation see data sheet 1.0-100 Denomination Restrictor valve with reverse free flow check Fluid Mineraoil, other fluid on request
Nominal size NG6 acc. to ISO 4401-03 Contamination efficiency ISO 4406:1999, class 20/18/14…21/19/15
DIMENSIONS 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
20 28 M5 or stud screws M5 Viscosity range 12 mm /s…320 mm /s
2
2
14 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
P Mounting position any the check valve p = 2 bar
ö
Meter-out: ∅ 5,5 A B Fastening torque M = 5,5 Nm (Qual. 8.8) for fastening screws Nominal volume flow rates Q = 40 l/min
40 28,5 27 T To 14 Weight Depending on the type 1,8…1,9 kg Q at 10 bar valve pressure loss
N
D
Max. volume flow Q N = 70 l/min
max
Leakage volume flow Almost leak free with closed restrictor
44 27
30
A=71 TYPE LIST / FUNCTION
B=71
40 30 37 88 37 Meter-out: Meter-in:
15 AURDA6 AURDVA6 Valves for restricting the meter-in flow are
achieved by turning the meter-out valves
P A PT B A PT B restrictors (longitudinal axis):
A B AURDA6 get AURDVA6
T To AURDB6 AURDVB6 AURDB6 get AURDVB6
Meter-in: AURD6 get AURDV6
Valves for restricting the meter-in flow
A PT B A PT B are supplied with a sealing plate and an
1,5 30 1,5 10 VA=71 intermediate plate.
VB=71 AURD6 AURDV6
V=88
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 2.4-835E 2/2 Postfach Fax +41 33 672 72 12 Internet: www.wandfluh.com Data subject to change 2.4-850E 1/2
CH-3714 Frutigen Edition 03 40 CH-3714 Frutigen 20 21,5 19 Edition 21 32
Page 1144
17,8

T
∅ 5,5 45 ∅ 35 31 A B 21 32,5

P
60 32
42 A=92
B=92
49 120 49

40 30 10 15

T
A B

P
VA=92
1,5 42 1,5 VB=92
V=120