File: QC33003_E 00/2000/eIII • 3

3

P (bar)

Q (l/min)

Q (l/min)

∆p (bar)

Q (l/min)

QC.3.3... + AM.3.ABU

QC.3.3...

5

4

3

2

1

This regulator type can be used when-

ever it is necessary to obtain a con-

stant fluid flow irrespective of the pres-

sure variations present upstream or

downstream. It is fitted with a third T

line for discharging any excessive flow

rate.

When the reverse flow check valve is

needed, the check valve holder type

"AM.3.ABU.3..."can be fitted under-

neath the valve. (The check valve

holder must be ordered separately

see page III•4)

ORDERING CODE

QC.3.3... 3 WAY COMPENSATED

FLOW RATE REGULATORS

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 ÷ 22 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) 2%

Weight 1,5 Kg

(*) Max contamination level must be respect to obtain

the right function of the valve

No. of turns of knob

REGULATED FLOW RATE FLOW RATE - PRESSURE DROP

∆∆

∆∆

∆P - PUMP FLOW RATE

DIAGRAMS

HYDRAULIC SYMBOLS

QC Compensated flow rate regulator

3 CETOP 3/NG6

3 3 way

** Flow rate ranges

Q1 = 1 l/min

Q2 = 3 l/min

Q3 = 9 l/min

Q4 = 17 l/min

Q5 = 24 l/min

K Version with lock

(omit if not required)

* 1 = 1 turn version

4 = 4 turns version

** 00 = No variant

V1 = Viton

3 Serial No.

QC.3.3...

OVERALL DIMENSIONS CH. III PAGE 4

AM.3.ABU... CH. III PAGE 4