background image

A

P

B

FCG-3-***-*-10 models, with reverse 
flow check

B

A

B

A

A

A

B

B

Detailed symbol

Simplified symbol

FCG-3-***-A-*-10 models, with reverse 
flow check and anti-jump feature

A

B

B

A

P

P

T

Typical
directional valve

P

Note: FCG-3-***-A models are designed
primarily for meter-in applications where the P
port can be connected to an upstream point
that provides continuous pilot pressure to the
hydrostat to prevent “jump”. Consult your
Vickers representative about alternative
applications.

Rev. 8/97

GB-514A

F(C)G-3, 10 Series; ISO 4401, Size 03/NFPA D01

Basic Characteristics

Max. flow rates

1,0 to 18 L/min

. . . . . . . . 

(0.42 to 4.75 USgpm),

dependent on model

Max. pressure

315 (4500 psi) or

. . . . . . . 

160 bar (2325 psi),

dependent on model

Functions

In line, with or without 

. . . . . . 

reverse flow check and

anti-jump feature

General Description

These pressure compensated valves are
designed to provide adjustable controlled
flow rates independent of changes in inlet
and/or outlet pressures above a minimum
pressure differential. Models are available
with or without integral reverse flow check
valves. Those with check valves are
optionally available with an anti-jump
feature designed to eliminate transient
surges above the controlled flow rate
setting whenever flow is first directed to
the inlet port A.

Functional Symbols

FG-3-***-*-10 models, without reverse
flow check

All models have rotary adjustment of
controlled flow and can be supplied with
or without an integral key-lock feature.

The construction of a typical model with
integral check valve and anti-jump feature
is shown opposite. Its operation is the
same as for similar valves described in
the “Industrial Hydraulics” manual
although the spring-loaded hydrostat is
functionally located downstream of the
adjustable restrictor, as shown in the
“Functional Symbols” section.

Pressure Compensated Flow

 

Control Valves

Vickers

®

Flow Controls

Содержание Vickers FG-3 10 Series

Страница 1: ...s are designed to provide adjustable controlled flow rates independent of changes in inlet and or outlet pressures above a minimum pressure differential Models are available with or without integral reverse flow check valves Those with check valves are optionally available with an anti jump feature designed to eliminate transient surges above the controlled flow rate setting whenever flow is first...

Страница 2: ...6 32 models F C G 3 63 120 180 models 5 bar 75 psi 8 5 bar 125 psi Flow Limits Recommended controlled flow ranges F C G 3 10 F C G 3 16 F C G 3 32 F C G 3 63 F C G 3 120 F C G 3 180 0 015 to 1 0 L min 0 004 to 0 26 USgpm 0 015 to 1 6 L min 0 004 to 0 42 USgpm 0 025 to 3 2 L min 0 007 to 0 85 USgpm 0 025 to 6 3 L min 0 007 to 1 66 USgpm 0 08 to 12 0 L min 0 02 to 3 17 USgpm 0 08 to 18 0 L min 0 02 ...

Страница 3: ...ant fluids are required to be used consult your Vickers representative The extreme operating viscosity range is from 300 to 10 cSt 1460 to 54 SUS but the recommended running range is from 54 to 13 cSt 245 to 70 SUS For further information fluids see catalog 920 Temperature Limits Min 20_C 4_F Max 80_C 176_F To obtain optimum service life from both fluid and hydraulic system 65_C 150_F is normally ...

Страница 4: ...ation Data Mounting Attitude Unrestricted Mounting Surface Subplates and Fixing Bolts See note in Installation Dimensions section F C G 3 valves cannot be used to top normal ISO 4401 size 03 NFPA D01 module stacks unless the application will be satisfactory with a two bolt fixing and with the two or three port arrangements of the F C G 3 valves consult your Vickers representative if such an arrang...

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