Page 1136 - Softbound_Edition_19_en

Throttle valves Throttle valves
Throttle valve

CHARACTERISTICS Oil viscosity υ = 30 mm /s Throttle valve
2
∆p = f (Q) Pressure loss/flow characteristics Q = f (n) Volume flow adjustment characteristics Sandwich construction
(Standard) • Q = 80 l/min NG6
max
p [bar] Q [l/min] • Q = 50 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
10 DESCRIPTION FUNCTION APPLICATION
5 5 Throttle valve in sandwich construction NG6 By means of the adusting spindle (fine thread), Sandwich construction throttle valves are
with interface according to ISO 4401-03. The the restriction of the volume flow can be used where volume flows can be continuously
0 0 throttle valve is available in two different vari- continuously adjusted. With the spindle fully adjusted in both flow directions without consi-
0 5 10 15 20 Q [l/min] 0 0.5 1 1.5 2 2.5 3 3.5 n [-] ants, the standard and the precision throttle screwed in, the volume flow is zero, and a deration of the pressure fluctuations. These
(FD). The FD execution is availble for restriction metallic edge seals leakfree. The throttle effect sandwich valves are perfectly suitable for
in A, B or AB only. The turning knob is made is produced by an annular gap which can be machine tools as well as all types of handling
Q = f (n) Volume flow adjustment characteristics Q = f (n) Volume flow adjustment characteristics from aluminium, the sandwich plate made of varied in size, or by means of a triangular edge. operation.
(Precision throttle) (Precision throttle) steel is zinc-nickel coated. The flow through of throttle valves is possible in
Q [l/min] Q [l/min] both directions. The precision throttle (FD) has
∆ p = 20 bar
0.4 K0149 25 K0148 an even finer resolution in the lowest volume
A PT B A PT B A PT ∆ p = 20 bar flow range.
B
0.3 ∆ p = 10 bar 20 Due to the type of construction, there is a very
15 ∆ p = 10 bar low leakage.
∆ p = 5 bar
0.2
10 ∆ p = 5 bar
0.1 5 TYPE CODE A DR 6 #
0 0 International standard interface ISO
0 0.5 1 1.5 2 2.5 n [-] 0 1 2 3 4 5 n [-]
A PT B A PT B A PT B Throttle valve
Type list / function
in A A in B B
in A and B AB
in P P in T T
DIMENSIONS in P and T PT
BDRA4, BDRB4 et BDRAB4 Nominal size 6
28 Standard
10 20 14 Precision throttle - FD (A, B or AB only)
Design-Index (Subject to change)
P GENERAL SPECIFICATIONS HYDRAULIC SPECIFICATIONS
∅ 5,5 40 ∅ 28,5 27 T A B 14 Description Throttle valve Fluid Mineral oil, other fluid on request
ISO 4406:1999,
Nominal size
Contamination efficiency
NG6 acc. to ISO 4401-03
Construction
To
(Required filtration grade ß 10...25 ≥ 75)
4 fixing holes for socket cap screws
Mounting Sandwich construction class 20/18/14…21/19/15
M5 or studs screws M5 refer to data sheet 1.0-50/2
Connections Threaded connection plates, Multi-flange Viscosity range 12 mm /s…320 mm /s
2
2
30 44 27 subplates, Longitudinal stacking system Fluid temperature -20…+70 °C
A=71 Ambient temperature -20…+50 °C Peak pressure p max = 350 bar
B=71 Mounting position any Nominal volume flow rate Q = 50 l/min (throttle at A or B)
N
Fastening torque M = 5,5 Nm (Quality 8.8) Q at 10 bar valve pressure loss
D
37 AB=88 Weight m = 1,9 kg Max. Volume flow Q N = 80 l/min
max
Leakage volume flow Almost leak free with closed restrictor
BDRP4, BDRT4 et BDRPT4
TYPE LIST / FUNCTION
P
ADRA6 ADRB6 ADRAB6
A B 6
6 T To
30 52 27 A PT B A PT B A PT B
PARTS LIST T=79 ADRP6 #1 ADRT6 #1 ADRPT6 #1
P=71
Position Article Description
PT=96
10 160.2052 O-ring ID 5,28 x 1,78 (NBR)
20 114.1204 Turning knob Technical explanation see data sheet 1.0-100
A PT B 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 2.4-730E 2/2 Postfach Fax +41 33 672 72 12 Internet: www.wandfluh.com Data subject to change 2.4-750E 1/2
CH-3714 Frutigen Edition 03 40 CH-3714 Frutigen Edition 21 31
Page 1136

21,5 19
10 17,8 20

T
∅ 5,5 45 ∅ 35 31 B 21 32,5
A
P

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

T
B
A
P

24 T=92 30
P=92
PT=120