50.8

37.3

3.2

16.7

facoltativo

Attacco "T"

Ø11.2 (max)

32.5

21.4

6.3

64 310/119 ED

1/2

64 310/119 ED

QTM5

FLOW RESTRICTOR VALVE

SERIES 10

HYDRAULIC SYMBOLS

OPERATING PRINCIPLEMOUNTING INTERFACE

— This is a flow restrictor valve with built in check valve for

reverse free flow, made as a modular version with

mounting surface according to the ISO 4401 standards.

— It can be assembled quickly under all ISO 4401-05

modular valves without use of pipes, using suitable tie-

rods or bolts, thus forming compact modular groups.

— It is supplied with socket hex adjustment screw and

locking nut. Rotate anticlockwise to increase the flow rate.

MODULAR VERSION

ISO 4401-05

p max

350 bar

Q max 120 l/min

ISO 4401-05-04-0-05

(CETOP 4.2-4-05)

PERFORMANCES (measured with mineral oil of viscosity 36cSt at 50°C)

Maximum operating pressure bar 350

Maximum flow rate l/min 120

Cracking pressure bar 0,5

Ambient temperature range °C -20 / +60

Fluid temperature range °C -20 / +80

Fluid viscosity range cSt 10 ÷ 400

Recommended viscosity cSt 25

Fluid contamination degree

According to ISO 4406:1999

class 20/18/15

Mass: QTM5-SA, -SB, -RSA, -RSB

QTM5-D, -RD

2,3

2,5

Optional

“T” port

64 310/119 ED

2/2

QTM5

SERIES 10

REPRODUCTION IS FORBIDDEN. THE COMPANY RESERVES THE RIGHT TO APPLY ANY MODIFICATIONS.

2 - CHARACTERISTIC CURVES (values obtained with viscosity of 36 cSt at 50°C)

4 - OVERALL AND MOUNTING DIMENSIONS

1 - IDENTIFICATION CODE

controlled flow

versus Δp

with different

restrictor

opening values

CONTROLLED FLOW Δp - Q PRESSURE DROPS Δp - Q

dimensions in mm

1) pressure drops through

the check valve with

restrictor all closed

2) pressure drops through

the free ports

Seals:

N = Seals in NBR for mineral oils (standard)

V = Seals in FPM for special fluids

Series No.

(the overall and mounting dimensions remain

unchanged from 10 to 19)

Modular version

Flow restrictor valve

ISO 4401-05 size

S = adjustment screw (standard)

K1 = adjustment knob

Q T M 5 - / 10 /

3 - HYDRAULIC FLUIDS

Use mineral oil-based hydraulic fluids HL or HM type, according to ISO 6743-4. For these fluids, use NBR seals (code N). For fluids HFDR type

(phosphate esters) use FPM seals (code V). For the use of other kinds of fluid such as HFA, HFB, HFC, please consult our technical

department. Using fluids at temperatures higher than 80 °C causes a faster degradation of the fluid and of the seals characteristics.

The fluid must be preserved in its physical and chemical characteristics.

1 Mounting surface with sealing rings:

5 OR type 2050 (12.42x1.78) - 90 Shore

2 Socket hex adjustment screw:

spanner 5 (standard)

Rotate anticlockwise to increase flow

3 Locking nut: spanner 17

4 Adjustment knob K1 (option)

Rotate anticlockwise to increase the flow

Versions for meter-out:

D = control on lines A and B

SA = control on line A

SB = control on line B

Versions for meter-in:

RD = control on lines A and B

RSA = control on line A

RSB = control on line B

screw turns to close