Page 1177 - Softbound_Edition_19_en

Flow control valves Flow control valves
Flow control valve

2
CHARACTERISTICS Oil viscosity υ = 30 mm /s
Q = f (p) Pressure drop/flow characteristics ∆p = f (Q) Pressure loss/flow characteristics 2-way flow control valve
over non-return valve Flange- and sandwich construction ®
Q [l/min] p [bar] • Q max = 48 l/min, p max = 350 bar NG4-Mini
10 K0131 6 K0130 • Q N max = 40 l/min
7.5 Q = 8 l/min 5
N
4
5 Q = 5 l/min 3 DESCRIPTION FUNCTION APPLICATION
N
2 Direct operated, pressure compensated flow The 2-way flow control valve is designed to 2-way flow control valves are used where the
2.5 Q = 2 l/min
N
Q = 1.25 l/min 1 control valve in flange- and sandwich cons- keep the oil flow to any actuator constant supply volume flow has to be kept constant
N
0 Q = 0.63 l/min 0 truction. Flow control screw-in cartridges irrespectiv of the load. even when the load fluctuates. De-pending on
N
0 50 100 150 200 250 300 350 p [bar] 0 1 2 3 4 5 6 7 8 Q [l/min] M22x21,5 acc. to ISO 7789 are installed. In the the application, a distinction is made between
sandwich plates for A, B and AB line, a bypass restricting the forward flow or the return flow.
SYMBOLS / DIMENSIONS check valve for reversed free flow is installed. Mini-4 flow control valves are used where
A bypass non-return valve plate for the flange hydraulic systems have to be both light and
Meter-out flow control Meter-in flow control valve, for free flow from B to A, can be ordered compact.
A PT B A PT B separately. Two flow ranges are available. The
QA.SA03-A QA.SA03-AV flange body is painted and the sandwich plates
are phosphatised.
A PT B A PT B
A PT B A PT B A PT B TYPE CODE

QA.SA03-P QA.SA03-B QA.SA03-BV Q Z A04 - - #
Flow control valve
2-way
A PT B A PT B A PT B Type of adjustment Key S
A PT B A PT B A PT B Control knob D
QA.SA03-T QA.SA03-AB QA.SA03-ABV Cover A
Flange construction F
Sandwich construction S
A PT B A PT B A PT B Mounting interface acc. to Wandfluh standard, NG4-Mini
Type list/Function Flange construction Sandwich construction Sandwich construction Sandwich construction
Sandwich types QA . SA03-A, AV, B, BV AB, ABV Meter-out flow control Meter-in flow control
By turning around valves with meter- 15 10 A → B A/B in P P in A A in A AV
out function, meter-in function can be in T T in B B in B BV
adchieved P in A and B AB in A and B ABV
A turns into BV ∗ A B ∗ Nominal volume flow rate Q N 2,5 l/min 2,5
B turns into AV ø4.2 T To 6,3 l/min 6,3
AB turns into ABV 16 l/min 16
15
10
Valves for meter-in functions are 25 l/min 25
supplied with a sealing plate and a A, AV=67 40 l/min 40
intermediate plate ∗ 30 P ∗ B, BV=67 Design index (subject to change)
ø4.2 T A B To AB, ABV=96
Sandwich types QA . SA03-P, T
∗ The total lenghts depends on the A, AV=67 20
cartridge type, see data sheet 2.5-510 B, BV=67
30
40 13 30 10
AB, ABV=96 GENERAL SPECIFICATIONS HYDRAULIC SPECIFICATIONS
Technical explanation see P Description 2-way flow control valve Fluid Mineral oil, other fluid on request
data sheet 1.0-100 ∗ A B Nominal size NG4-Mini acc. to Wandfluh standard Contamination ISO 4406:1999, class 18/16/13
20 T 11 21 30 Construction Flange- and sandwich construction efficiency (Required filtration grade ß 6...10≥75)
40 13 30 10 15 Mounting 3 holes for socket cap screws M5 Viscosity range see data sheet 1.0-50/2
12 mm /s…320 mm /s
or studs screws M5

2
2
1.2 P 1.2 48 19 Connection Threaded connection plates Fluid temperature -20…+70 °C
∗
SCREW-IN CARTRIDGES INSTALLED A 32,4 B PARTS LIST 67 Multi-flange subplate Peak pressure p max = 350 bar
Longitudinal stacking system
Min. volume flow
= 0,1 l/min
Q
AV,BV,ABV
The following screw-in cartridges are used in the sandwich body: 11 21 30 Ambient temperature -20…50 °C Max. volume flow Q min = 48 l/min
T
15 Position Article Description max
Type Designation Data sheet no. Mounting position any
M = 5,5 Nm (Qual. 8.8), for fastening screws
Fastening torque
D
1.2 1.2 48 19 10 160.2045 O-ring ID 4,5x1,5 (NBR) M = 50 Nm for screw-in cartridge
QA.PM18 32,4 2-way flow control valve 67 2.5-510 30 173.0700 Intermediate plate PZSA03 Weight • Flange type m = 0,46 kg
D
Sealing plate PDSA03
173.0650
40
AV,BV,ABV (without screw-in cartridge) • Sandwich type P,T,A,B m = 0,95 kg
• Sandwich type AB m = 1,22 kg
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 2.5-700E 2/2 Postfach Fax +41 33 672 72 12 Internet: www.wandfluh.com Data subject to change 2.5-720E 1/3
CH-3714 Frutigen Edition 21 31 CH-3714 Frutigen Edition 11 50
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