Industrial hydraulic L4X sandwich plate throttle/check valve 80
L/min 315 Bar 6 superimposed
Features
- Sandwich plate valve
- Porting pattern to DIN 24 340 form A and ISO4401
- 3 adjustment elements
• Screw with locknut and protective cap
• Two insert pressure relief valve
• Rotary knob with scale - For limiting the main or piilot fluid
flow of 2 actuator connections
- For meter-in or meter-out control
Function and configuration
Valve type Z2FS 6 is a double throttle/check valve with sandwich
plate structure. It is used to control the flow by changing the
throttling. In the opposite direction, fluid flows freely through
the check valve. For meter-in control fluid passes from port A1 to
port A2 via the throttling point (1), which is made up of the valve
seat (2) and the throttling spool (3). The throttling spool (3) is
axially adjustable through the adjustment screw (4). Fluid flows
from A2 to A1, valve seat (2) is opened against spring (5) and
valve acts as check valve. Depending on the installation position,
the throttling effect may be arranged as a meter-in or a meter-out
control.
Standard version used for controlling main flow (Z2FS6.../2Q)
In order to change the velocity of an actuator (limiting of main
flow), the double throttle/check valve is installed between the
directional valve and the sub-plate.
Fine control version used for controlling pilot flow(Z2FS6.../1Q)
In order to limit the pilot flow, the double throttle/check valve
is installed between the main valve and the pilot valve.
Type: Z2FS6-2-L4X/2Q
.
Specification
Symbols ( ① =valve side, ② = sub-plate side)
Technical data
| Fluid | Mineral oil suitable for NBR and FKM seal |
| Phosphate ester for FKM seal |
| 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, ISO4406 |
| Max. working pressure | bar | 315 |
| Max. flow-rate | L/min | 80 |
| Weight | kg | Approx.1.0 |
Unit dimensions (Dimensions in mm)
Valve fixing screws
M5 internal hexagon screw or LT 30.02 double-screw bolt with LT
30.01 nut GB/T 70.1-10.9, the length according to sandwich,
Tightening torque MA = 8.9Nm, must be ordered separately.
1 Nameplate
2 Adjustment element "2"
3 Adjustment element "3"
4 Adjustment element "7"
5 Space required to remove the key
6 Valve fixing holes
7 Lockable nut S=10
8 Internal hexagon screw S=5
9 O-rings 9.25×1.78 (Port A, B, P, T)
10 O-ring plate
11 For all adjustment elements: turn anti-clockwise=increases flow
turn clockwise=decreases flow
12 To change from meter-in to meter-out, rotate the unit around the
'X–X'axis
13 End cap S=22
