5-7
FS_UK.INDD CM
Catalogue HY11-3500/UK
Parker Hannifin GmbH & Co. KG
Hydraulic Controls Division
Kaarst, Germany
Throttle Check Valve
Series FS
5
Characteristics / Ordering Code
Manatrol throttle check valves of series FS allow the
adjustment of the flow for a defined direction.
A 2 stage needle allows for very exact setting of smaller
flow rates with the first 3 rotations of the adjustment knob.
After 3 more rotations, the valve is completely open. The
valve setting can be locked by a locking screw.
Characteristic values
Size
Pressure
[bar]
Max. flow
[l/min ∆p10bar]
Opening
[cm
2
]
Check
Kv factor
Throttle
surface [cm
2
]
Throttle v. open
Kv factor
Weight
[kg]
400 210 25 0.37 18.6 0.13 6.3 0.23
600 210 40 0.62 30.4 0.22 11.2 0.31
800 210 50 0.86 43.4 0.28 14 0.67
1200 210 120 1.18 60 0.70 35.4 1.17
1600 210 250 2.23 111 1.48 75 2.31
Kv from the table
∆p [bar]
γ [kg/dm
3
] = specific gravity of fluid
(γ for mineral oil = 0.85 – 0.9)
∆ p
γ
Flow rate Q [l/min] = Kv ·
Ordering code
Throttle and
check
valve
Steel body
Code Size
400 400
600 600
800 800
1200 1200
1600 1600
S
Size
Needle Seal
Code Seal
omit NBR
V FPM
Code Clamping screw
omit Hexagon socket
F
With knurled
knob
Subplate
mounting
Clamping
screw
F S
* only for sizes 400 to 600
Code Needle
omit
Standard
2 stage needle
4*
Micro-fine hollow
needle with slot
5-8
FS_UK.INDD CM
Catalogue HY11-3500/UK
Parker Hannifin GmbH & Co. KG
Hydraulic Controls Division
Kaarst, Germany
Throttle Check Valve
Series FS
5
Performance Curves / Dimensions
Size L2 L5 L4 L3 L7 L6 ØD2 Ød2 B1 B H3 H2 H Ød1 H1 ØD SW W1 L1 L
400 71 34.8 - 14.2 4.8 25.5 13.3 7 33.5 44.5 56.5 51 22 6.8 11 21 - 17.5 21.5 63
600 78 33.5 - 18 4.0 25.5 16 10 38.1 51 67.5 61 25.5 7 12.2 25 - 22.2 25.5 70
800 89 38.1 - 21.3 4.0 30 19.1 13 44.5 57.5 84 76 32 7 16 30 - 25.5 24.5 81
1200 114 76.2 38.1 13.7 11.4 54.1 24 14 54 70 111 96 45 9 22.5 35 - 31.8 38.5 104
1600 138 95.2 47.7 15.8 19 57.2 32 22 60.2 76.5 146.5 130 51 9 25.5 - 47.8 38.1 44.5 127
Dimensions
Hex head
adjusting knob
Standard for
Size 1600
∆p/Q performance curves ∆p/Q performance curves free flow
