7 MPa Valves
Unclamp Delay Valve
Temporarily Hold Parts During Unclamp n Set delay to control unclamp in single acting devices. Use in single or double acting systems. n Eliminate workpiece movement, caused by backpressure, when unclamping over a work support. n Normally open valve allows free fluid flow through the valve during clamping. n Does not require “B” pilot line to open. n Stainless steel internal components for superior corrosion resistance.
Unclamp Delay Valve Model No.*
L7-0431-00
Set Pressure Range**
2 to 10 MPa
3 to 7 seconds Using ISO 32 Fluid
Time Delay Preset*** (sec)
Operation : The VektorFlo ® Unclamp Delay Valve operates as a normally open element in a hydraulic clamping system. Low pressure fluid flows freely through the valve to downstream devices. As pressure in the system builds, the mechanical pilot piston moves away from the check valve allowing it to close. Full system pressure is reached and flow in the system stops. If pressure leaks off in downstream devices, the check valve will re-open and replenish pressure. During
25 micron All Ports
Filtration Included Max Flow
* Manifold mount o-rings included. Ships with all ports plugged. ** Maximum inlet pressure 10 MPa. Excess pressure voids warranty *** Duration of time delay may vary depending on the viscosity of oil in the application. If longer delays are required (up to 20 sec), contact Vektek Customer Support for assistance. 11.4 l/min Crossover plate, L9-3197-00, needed when using as a standalone manifold mount valve.
SEQUENCE VALVE FEED MANIFOLD MOUNT PORT*
J-3
unclamping, inlet pressures falls with main system pressure but downstream pressure is held constant by the check valve. At the low inlet pressure, spring force starts to move the mechanical pilot towards the check valve at a rate set by the flow control and oil viscosity. The mechanical pilot piston moves through its stroke and encounters the check valve. Spring force opens the check to release all downstream pressure to the power unit reservoir.
104
OUTLET MANIFOLD MOUNT PORT*
G1/4 INLET PORT*
6.7 THRU 2X
88.1
37.2
34.4
INLET MANIFOLD MOUNT PORT* SEQUENCE VALVE FEED MANIFOLD MOUNT PORT
45.3
20.3
17.9
7.7
13.9 47.2
11.8
27.3
G1/4 OUTLET PORT*
30.6
29.6
62.7
41.3
MANIFOLD MOUNT FEED HOLES 2.3/ 5mm
ILML70430 REV C
Mounting Options
For proper sealing, the mating surface must be flat within 0.08 mm with a maximum surface roughness of 1.6 µm R a
© Vektek February 2021
1-800-992-0236
www.vektek.com
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