Sifter (Sieve Shaker) 3D VGH-IV
A universal vibratory sieve shaker with three dimensional motion, for foundry sand, powders and other materials, with wet sieving possible. The VGH-IV drives a full nest on a timed run, so every analysis sees the same agitation.
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A universal vibratory sieve shaker for the laboratory, suited to foundry sand, powders and other materials where particle size decides quality. The VGH-IV drives a full nest in three dimensional motion, so material is presented to every aperture rather than tracking the same path, which is what makes the cut even and the result repeatable.
A timed run. The run is set on the timer, so the agitation stays a constant from one analysis to the next rather than a matter of judgement. The shake is part of the method: too little and fines are still held up in the nest, too much and the sand is worked rather than graded.
Amplitude, time and tapping are set, not guessed. The amplitude is entered as a percentage and the cycle time on the timer, and up to ten programs hold those settings, so a given sand is run the same way every time. End tapping can be switched on to knock grains clear of the cloth at the end of a run, and the motion can be set to continuous or interval.
Dry and wet sieving. Foundry sand is normally graded dry, on a dried and split sample. Wet sieving is possible where fines cling to the coarser grains and a dry shake does not release them.
| Model | VGH-IV |
|---|---|
| Sieving motion | Three dimensional vibratory, driving the whole nest |
| Sieving type | Dry sieving; wet sieving is possible |
| Amplitude | Adjustable, set as a percentage on the control panel |
| Run | Timed. The run stops on its own once the set time is reached |
| Typical cycle | 10 minutes, as a recommended starting point |
| Vibration mode | Continuous or interval |
| End tapping | Selectable, on or off |
| Stored programs | Up to ten, each holding its own amplitude, cycle time, end tapping and mode |
| Takes | An 8 in (203 mm) nest of ten sieves with lid and pan, clamped by a top plate and knob |
| Sample | 100 g of dried, washed sand for a grain fineness number |
| Power supply | 230 V AC, 50 Hz, single phase, unless specified otherwise |
| Used for | Sieve analysis and AFS grain fineness number on foundry sand; grading of powders and other materials |
| Built by | Versatile Equipments, Kolhapur, foundry sand testing since 1967 |
Pair it with a certified nest: AFS test sieves and complete sets. More on how the shake affects the cut, sieve analysis and the grain fineness number, and sieve inspection and certification.
Versatile’s instruction manual advises keeping the cycle short when the amplitude is set above 80 per cent, and washing the sample before it is run.
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