Industrial hydraulic FG/FK throttle and throttle check Valve
Screw-in cartridge valve 315Nar
Function and configuration
Type FG . K... and FK . K... (cartridge valve)
The valves of the types FG and FK are throttle and throttle check
valves. The flow depends on the pressure differential between A and
B and on the viscosity of the hydraulic fluid. The valves mainly
consist of adjustment type (1), housing (2),throttling pin (3) and
check valve (4) with valve type FK. The flow is throttled from A to
B. The throttle cross-section (5) is adjusted by displacing the
throttling pin (3) in axial direction. For free flow back from B to
A, a check valve (4) is installed with valve type FK.
Type FG . C... and FK . C... (screw-in cartridge valve)
In principle, the function of these valves corresponds to the
function of version "K". However, they are delivered without
housing (2) and thus can be screwed into the block directly.
Specification
Technical data
| Max.operating pressure | bar | Up to 315 |
| Maximun flow (standard valves) | L/min | 100 | 200 | 400 |
| Hydraulic fluid | Mineral oil suit for NBR and FKM seal |
| Phosphate ester for FKM seall |
| Fluid temperature range | ℃ | -30 to +80 (NBR seal) |
| -20 to +80 (FKM seal) |
| Viscosity range | mm2/s | 10 to 800 |
| Degree of contamination | Maximum permissible degree of fluid contamination: Class 9.NAS 1638
or 20/18/15,IOS4406 |
| Size | 16 | 25 | 32 |
| Weight | Cartridge valve “K” | Kg | 0.8 | 1.7 | 4 |
| Screw-in cartridge valve “C” | Kg | 0.4 | 0.7 | 1.7 |
| Installation position | Optional |
Unit dimensions: (dimensions in mm)
Cartridge valve "K"
1 Adjustment type "1"
2 Adjustment type "7"
3 Adjustment type "3"
4 Setting range
5 Space required to remove the key
6 Depth of fit
7 Port A can be positioned around the central axis of port B.
8 Valve mounting screws Screw-in valve "K" - Size 16: 4 Internal
hexagon screw M8×20 - 10.9, Tightening torq ue MA = 30 Nm +10 %. -
Size 25: 4 Internal hexagon screw M12×25 - 10.9 Tightening torque
MA = 102 Nm +10 % . - Size 32: 4 Internal hexagon screw M16×35 -
10.9 Tightening torque MA = 250 Nm +10 %.
Unit dimensions(dimensions in mm)
Screw-in Cartridge valve "C"
| Size | Val ve type | φD6 | φD8 0- +0.2 | φ09H6 | 10 | H7 | Valve type | H13 | H14 - +0.1
| H15 | H16 | H17 |
| FG | FK | FG | FK |
| φD5H6 | φD5 | H10 -0.2-0 |
| 16 | 10 | 14 | 10 | 34.1 | 28 | G3/4 | 33 | 39.5 | 48 | 26 | 8.2 | 2 | 22 | 1.5 |
| 25 | 18 | 25 | 18 | 51.1 | 44 | G 1 1/4 | 41.5 | 55 | 67.5 | 27 | 9.4 | 2.5 | 27 | 2 |
| 32 | 28 | 35 | 28 | 70.1 | 60 | G2 | 56 | 73.5 | 93.5 | 29 | 8.5 | 2.5 | 36 | 3 |
1 Adjustment type "1"
2 Adjustment type "7"
3 Adjustment type "3"
4 Setting range
5 Space required to remove the key
6 Depth of fit
7 Port A can be positioned around the central axis of port B
8 Control edge
9 Tightening torques( Screw-in valve "C" ) moisten thread with
hydraulic fluid -Size 16 MA = 170Nm +10 %. -Size 25 MA = 305Nm +10
% . -Size 32 MA = 600Nm +10 %.
