Accessory Valves
Unclamp Delay Valve
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 unclamping, inlet pressure falls with main system pressure but downstream pressure is held constant by the check valve. Time delays pressure release in a critical circuit while unclamping n Adjust the delay to control unclamp timing in single-acting devices. May be used with single or double-acting clamping systems. n Eliminate workpiece movement, caused by residual pressure when unclamping over a work support. n Normally open valve (with crossover plate) allows free fluid flow through the valve during clamping, delays release timing during unclamping. n Conveniently mounts between the Vektek Sequence Valve and the fixture manifold (for sequenced operation downstream) or can be ported with fittings and tubing. n Stainless steel internal components for superior corrosion resistance.
PARTIAL SCHEMATIC OF A SYSTEM SHOWING A WORK SUPPORT WITH TIME DELAYED RELEASE
Sequence #3- Clamps Over Work Support(s)
Workpiece
Sequence #2 Work Support(s)
INLET
OUTLET
Time Delayed Unclamp (Must Be Single Acting)
Sequence Valve manifold mounted to Unclamp Delay Valve
Sequence #1- Primary Swing Clamp(s)
ILMV704302 REV A
Unclamp Delay Valve
Set Pressure Range**
Time Delay Preset*** (Sec)
Model No.*
Filtration Included 25 Micron All Ports
Max. Flow
3 to 7 Seconds Using ISO 32 Fluid
47-0431-00 35 to 350 bar
11.4 l/min
Crossover plate, 49-3197-00, needed when using as a standalone manifold mount valve.
* Manifold mount O-Rings included. Ships with all ports plugged. ** Maximum inlet pressure 350 Bar. 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.
REMOVE PLUG FOR MOUNTING W/ CROSSOVER PLATE OR SEQUENCE VALVE
OUTLET MANIFOLD MOUNT PORT*
6.7 THRU 2X
INLET MANIFOLD MOUNT PORT*
G1/4 INLET PORT*
7.7
104
88.1
17.9
34.4
45.3
37.2
20.3
M-6
13.9
11.8
27.3
47.2
29.6
30.6
For proper sealing, the mating surface must be flat within 0.08 mm with a maximum surface roughness of 1.6 µm R a
MANIFOLD MOUNT FEED HOLES 2.3/ 5mm
41.3
G1/4 OUTLET PORT*
62.7
ILMV704300 REV D
4 Mounting Options
2
3
4
USE IN NEW OR EXISTING APPLICATIONS UNDER SEQUENCE VALVE MANIFOLD MOUNTED TO FIXTURE
USE AS STANDALONE VALVE EXTERNALLY PLUMBED
EXTERNALLY PLUMBED PAIRED TO SEQUENCE VALVE
USE AS STANDALONE VALVE MANIFOLD MOUNTED TO FIXTURE USING CROSSOVER PLATE
1
2X M6 MOUNTING HOLES THREAD 10 MINIMUM THREAD DEPTH
B
2X 2.3/5mm MANIFOLD FEED HOLES
A
B
A
37.2 45.3
OUTLET
INLET
53.2
73
7.7 0 17.9
49-3197-00 CROSSOVER PLATE FOR MANIFOLD MOUNTING IN STANDALONE APPLICATIONS
MANIFOLD MOUNT TO FIXTURE UNDER SEQUENCE VALVE SEQUENCE VALVE FEED MANIFOLD MOUNT PORT
INLET OUTLET
OF SEQUENCE VALVE MOUNTING FOOTPRINT UDV FITS WITHIN
SEQ VLV OUTLET MM TO UDV INLET
ILMV704303 REV A
ILMV704301 REV B
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© Vektek December 2021
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