File: AM3VR001_E 03/2010/eIV • 13

4

∆P (bar)

Q (l/min)

Q (l/min)

P (bar)

1

2

3

Q (l/min)

P (bar)

3

2

1

Q (l/min)

P (bar)

3

2

1

AM.3.VR... MODULAR REDUCING VALVES

WITH

RELIEVING

- PILOT OPERATED CETOP 3

Max. operating pressure 350 bar

Setting ranges: spring 1 max. 60 bar

spring 2 max. 120 bar

spring 3 max. 250 bar

Maximum allowed

∆ ∆

∆ ∆

∆p pressure

between the inlet an outlet pressure 150 bar

Max. flow 40 l/min

Draining on port T 0,5 ÷ 0,7 l/min

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

Weight 1,36 Kg

Weight bypass version 2 Kg

These pressure reducing valves en-

sure a minimum pressure variation on

the P or A port with changing flow rate

up to 90 l/min.

Three spring types allow adjustment

within the range 7 ÷ 250 bar. Manual

adjustment is available by a grub screw

or plastic knob.

The RELIEVING SYSTEM inside the

valve AM3VR allows the passage from

the setting pressure line to T line of the

flow through the valve to avoid the

increasing of pressure in the reduced-

pressure line by diverting exceeding

flow to reservoir. A bypass module

with check valve for free flow from A to

AR port (see hydraulic symbol) is avail-

able..

ORDERING CODE

The fluid used is a mineral oil with a viscosity of 46 mm

2

/s at 40°C. The tests have been

carried out a fluid temperature of 50°C.

Curves n° 1 - 2 - 3 = setting ranges

∆∆

∆∆

∆P AM.3.VR... + BYPASS

MINIMUM SETTING PRESSURE

PRESSURE-FLOW OF RELIEVINGPRESSURE-FLOW RATE

AM Modular valve

3 CETOP 3/NG6

VR Pilot operated pressure

reducing valve with relieving

* Control on lines

P = Drain on T

A = Drain on T

D = Drain on B reduct pressure on A

* Drain connection

E = External (only for

control on the P line)

I = Internal (Standard)

B Version with bypass

on line A only

Omit if not required

* Type of adjustment

M = Plastic knob

C = Grub screw

* Setting ranges

1 = max. 60 bar (white spring)

2 = max. 120 bar (yellow spring)

3 = max. 250 bar (green spring)

** 00 = No variant

V1 = Viton

1 Serial No

To changes valves AM.3.VR.P... from inter-

nal to external drainage it is necessary:

- screw out the plug on the "Y" port

- screw out the plug T.C.E.I. M8x1 from the

body

- screw in a screw S.T.E.I. M6

- rescrew the T.C.E.I. M8x1 plug on the

body

NOTE: the external draining can be used as

a piloting line (please, contact our Techni-

cal Service for other informations)

AM.3.VR...

CVR.20... BFP CARTRIDGE CATALOGUE

SCREWS AND STUDS CH. IV PAGE 21

HYDRAULIC SYMBOLS

AM.3.VR.P... AM.3.VR.A...

Version with check valve

AM.3.VR.D...

AM.3.VR.A... +

Bypass

File: AM3VR001_E 03/2010/eIV • 14

4

AM.3.VR.P... / AM.3.VR.D...

AM.3.VR.A... + BYPASS

OVERALL DIMENSIONS

AM.3.VR...

MODULAR REDUCING VALVES WITH RELIEVING - PILOT OPERATED CETOP 3

Type of adjustment

M Plastic knob

C Grub screw

B Bypass (optional)

Ordering code:

V89.45.000

(if ordered separately)

Support plane

specifications