Parker Hanniļ¬n Corporation
Hydraulics Group
Catalogue HY11-3500/UK
7
7-41
FM UK.INDD 10.05.17
Throttle Check Valve
Series FM
Characteristics
Technical data
Double-throttle check valves from the Parker Manapak
series FM are in sandwich design for easy conļ¬guration
of stack systems. Throttle and check valves are located
in ports A and B.
FM2 and FM3 can be used as meter-in or meter-out
throttle by changing the mounting position.
FM4 can be selected by ordering code as meter-in or
meter-out throttle. FM6 is only available as meter-out
control.
The throttle check valve can also be used to inļ¬‚uence
the switching time of pilot operated directional valves. In
this case, the valve is positioned between the pilot stage
(CETOP 03, NG06) and the main stage (CETOP 05, NG10
up to CETOP 10, NG32).
Features
ā€¢ Two types of metering needle design can be selected
when ordering FM2 and FM3 valves to achieve the
throttle characteristics required to suit the application.
ā€¢ Large bypass check valves allow high ļ¬‚ow at low pres-
sure drop.
ā€¢ NG06 - FM2 (CETOP 03)
NG10 - FM3 (CETOP 05)
NG16 - FM4 (CETOP 07)
NG25 - FM6 (CETOP 08)
General
Series
FM2 FM3 FM4 FM6
Size
NG06 NG10 NG16 NG25
Mounting interface NFPA D03 NFPA D05 NFPA D07 NFPA D08
CETOP 03 CETOP 05 CETOP07 CETOP 08
Mounting position unrestricted
Ambient temperature [Ā°C] -20...+60
MTTF
D
value [years] 150
Weight [kg] 1.3 2.4 5.4 7.9
Hydraulic
Max. operating pressure [bar] 350 350 350 210
Max. Flow [l/min] 53 76 200 341
Opening pressure [bar] 0.3 0.3 0.3 0.3
Meter-in throttle ā€¢ ā€¢ ā€¢ ā€”
Meter-out throttle ā€¢ ā€¢ ā€¢ ā€¢
Fluid Hydraulic oil according to DIN 51524
Fluid temperature [Ā°C] -20...+70
Viscosity permitted [cSt] / [mmĀ²/s] 20...400
recommended [cSt] / [mmĀ²/s] 30...80
Filtration ISO 4406 (1999); 18/16/13
Parker Hanniļ¬n Corporation
Hydraulics Group
Catalogue HY11-3500/UK
7
7-42
FM UK.INDD 10.05.17
Throttle Check Valve
Series FM
Ordering Code
Valve
size
Needle
design
AdjustmentThrottle
valve
Seal
FPM
V
Code Size
2 NG06
3 NG10
FM
Throttle
check valve
in the
working port
A and B
DD
Code Adjustment
K Knob
S Hexagon socket
Code Needle
omit Standard conical
D
Fine, cylindrical
Hollow bored
with V notch
Valve
size
NG16
Meter-out /
meter-in
throttling
Throttle
valve
Seal
FPM
Design
series
4 V HTFM
Throttle
check valve
in the
working port
A and B
DD
Code Description
T Meter-in
F Meter-out
Valve
size
NG25
1)
Adjusting
knob
Throttle
valve
Seal
FPM
6 K VFM
Throttle
check valve
in the
working port
A and B
DD
A two-stage needle provides ļ¬ne adjustment in the lower ļ¬‚ow range with 3 adjustment rotations. After 3 more rotations,
the valve is completely open.
Design "D"
A cylindrical needle with a V notch allows the ļ¬ne adjustment over the entire setting range.
Design
series
(not required
for ordering)
Design
series
(not required
for ordering)
1)
Only meter-out available.
Parker Hanniļ¬n Corporation
Hydraulics Group
Catalogue HY11-3500/UK
7
7-43
FM UK.INDD 10.05.17
Throttle Check Valve
Series FM
Performance Curves
FM3 standard needle
FM2D needle with V notch
FM3D needle with V notch
FM2 ļ¬‚ow, check valve
FM2 standard needle
FM3 ļ¬‚ow, check valve
30
40
50
60
0
0
100
80
60
40
20
10
20
Flow [l/min]
Pressure differential [bar]
4
6
8
10
12
Turns of spindle
2
0
200
160
120
80
40
40
50
60
0
10
20
30
10
12
Flow [l/min]
Pressure differential [bar]
Turns of spindle
2
4
68
All characteristic curves measured with HLP46 at 50 Ā°C.
Parker Hanniļ¬n Corporation
Hydraulics Group
Catalogue HY11-3500/UK
7
7-44
FM UK.INDD 10.05.17
Throttle Check Valve
Series FM
Performance Curves
FM4 with standard needle
1 to 5 number of needle rotations
FM6 with standard needle
1 to 5 number of needle rotations
FM4 ļ¬‚ow, check valve
FM6 ļ¬‚ow, check valve
All characteristic curves measured with HLP46 at 50 Ā°C.
Parker Hanniļ¬n Corporation
Hydraulics Group
Catalogue HY11-3500/UK
7
7-45
FM UK.INDD 10.05.17
Throttle Check Valve
Series FM
Dimensions
Meter-out
Meter-in or meter-out
FM2
Adjustment code K
Adjustment code S
(Meter-out shown)
Valve side
Manifold side
Meter-in
A functional change is achieved by rotating
the mounting position of the valve 180Ā°
about the longitudinal axis (A-B).
Seal kit FM2
Seal Order code
V SK-FM2-V-20
Note:
The O-ring plate (with O-rings) for sealing the con-
necting surface of the manifold side is included. The
O-ring and positioning pin are always mounted on the
manifold side.
Parker Hanniļ¬n Corporation
Hydraulics Group
Catalogue HY11-3500/UK
7
7-46
FM UK.INDD 10.05.17
Throttle Check Valve
Series FM
Dimensions
Meter-out
Meter-in or meter-out
Note:
The O-ring plate (with O-rings) for sealing the con-
necting surface of the manifold side is included. The
O-ring and positioning pin are always mounted on the
manifold side.
A functional change is achieved by rotat-
ing the mounting position of the valve 180Āŗ
about the transverse axis (P).
Seal kit FM3
Seal Order code
V SK-FM3-V-20
FM3
Adjustment code K
Adjustment code S
(Meter-out shown)
Meter-in
Parker Hanniļ¬n Corporation
Hydraulics Group
Catalogue HY11-3500/UK
7
7-47
FM UK.INDD 10.05.17
Throttle Check Valve
Series FM
Dimensions
Meter-out
FM4
Meter-in
Seal kit FM4
Seal Order code
V SK-FM4VHT
Parker Hanniļ¬n Corporation
Hydraulics Group
Catalogue HY11-3500/UK
7
7-48
FM UK.INDD 10.05.17
Throttle Check Valve
Series FM
Dimensions
Meter-out
FM6
Adjustment: knob
Meter-in is not available for FM6
Seal kit FM6
Seal Order code
V SK-FM6-V-12