File: QC32005_E 02/2009/eIII • 2

3

Q (l/min)

P (bar)

Q (l/min)

Q (l/min)

∆p (bar)

Q (l/min)

QC.3.2.**.*.R

QC.3.2.G.**.*.R

QC.3.2...

6

5

4

3

2

1

6

5

4

3

2

1

ORDERING CODE

QC.3.2... 2 WAY COMPENSATED

FLOW RATE REGULATORS

No. of turns of knobNo. of turns of knob

REGULATED FLOW RATE

1 TURN VERSION

REGULATED FLOW RATE

4 TURNS VERSION

FLOW RATE - INLET PRESSURE FREE FLOW THROUGH

CHECK VALVE

QC Compensated flow rate regulated

3 CETOP 3/NG6

2 2 way

G Anti-jump system with internal

check valve (omit if not required)

** Nominal flow rate ranges

1 Turn version 4 Turn version

Q1 = 1,5 l/min Q1 = 1,5 l/min

Q2 = 3 l/min Q2 = 4 l/min

Q3 = 9 l/min Q3 = 10 l/min

Q4 = 19 l/min Q4 = 21 l/min

Q5 = 24 l/min Q5 = 28 l/min

Q6 = 30 l/min Q6 = 35 l/min

K Version with lock

(omit if not required)

* 1 = 1 turn version

4 = 4 turns version

R With internal check valve

(omit if not required)

** 00 = No variant

V1 = Viton

5 Serial No.

HYDRAULIC SYMBOLS

DIAGRAMS

These QC.3.2... compensated flow

rate regulators are designed to control

and maintain a constant irrespective

of the pressure variations upstream

and downstream of the regulation

section. Their new cast construction

has made it possible to obtain a wider

flow rate range, taking the upper limit

to 35 l/min (4 turns version) while

maintaining unchanged the pressure

differential required to obtain good

pressure compensation.

All models are available with and with-

out reverse flow check valve, com-

plete with an "anti-jump" device on

request. This accessory has been

designed to eliminate the problem

which manifests itself as a "anti-jump"

in the controlled actuator due to the

instantaneous flow rate variation that

takes place under the form of a tran-

sient every time the flow is made to

pass through the regulator.

Max. operating pressure 320 bar

Opening pressure (with bypass) 1 bar

Min. regulated flow rate (Q1 version) 0.03 ÷ 0.05 l/min

Nominal regulated flow rate

(1 turn version) 1,5 ÷ 30 l/min

Nominal regulated flow rate

(4 turns version) 1,5 ÷ 35 l/min

Difference in pressure (∆p) for vers. Q1 3 bar

Difference in pressure (∆p) Q2-Q3-Q4-Q5-Q6 8 bar

Hydraulic fluids Mineral oils DIN 51524

Fluid viscosity 10 ÷ 500 mm

2

/s

Fluid temperature -25°C ÷ 75°C

Ambient temperature -25°C ÷ 60°C

Max. contamination level(*) class 10 in accordance

with NAS 1638 with filter ß

25

≥75

Dependency on temperature (Q1 vers.) 5%

Dependency on temperature (Q2 vers.) 3%

Dependency on temperature (Q3-Q4-Q5-Q6) 2%

Weight 1,5 Kg

(*) Max contamination level must be respect to obtain

the right function of the valve

QC.3.2...

OVERALL DIMENSIONS CH. III PAGE 4