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Home > Metal Vsp Ring

Metal Vsp Ring
Metal Vsp Ring

Metal Vsp Ring

Metal VSP ring, also called the metal inner arc ring or Meller ring, is a metal random packing shaped a little like a garland: a ring built from curved inner arcs, with much of the ring wall left open. That large open area is the point — it lets a large flow of gas and liquid pass with little resistance, which raises the mass-transfer efficiency, and it keeps the void fraction high, at about 93 to 95 percent. The symmetric arcs give the packing an even, uniform structure, so it spreads the flow and resists the bias and channelling that hurt a lesser bed, and its smooth curves resist blocking. Being metal, it also brings high mechanical strength and good corrosion resistance. Sizes 25 to 76 mm.

  • Metal inner arc (VSP) ring — curved arcs with a large open ring-wall area.
  • Large flux and low resistance, so high mass-transfer efficiency.
  • High void (about 93 to 95 percent); symmetric arcs resist bias, channelling and blocking.
  • Metal build: high mechanical strength and good corrosion resistance.
  • Sizes 25 to 76 mm; real per-size data below.

Technial Parameters

SpecificationSize D×H×wall (mm)Pieces per m³Surface area (m²/m³)Bulk density (kg/m³)Free volume (%)Dry packing factor (m⁻¹)
Φ2525 × 25 × 0.659,20025042093310
Φ3838 × 38 × 0.614,50013835094.7163
Φ5050 × 50 × 0.87,00012130095144
Φ7676 × 76 × 1.01,950752809586

Size is diameter × height × wall thickness (mm).


PropertyValue
Product TypeMetal random packing (VSP / inner arc / Meller ring)
StructureRing of curved inner arcs; large open ring-wall area; symmetric, uniform
MaterialMetal (typically stainless steel; grade not stated on the supplied datasheet)
Standard SizesΦ25, Φ38, Φ50, Φ76 mm
Free Volume93–95%
Surface Area75–250 m²/m³
Bulk Density280–420 kg/m³
Dry Packing Factor86–310 m⁻¹
AdvantagesLarge open area, large flux, low resistance, high mass transfer, high void, anti-channeling, anti-blocking, corrosion-resistant, high strength
ApplicationsPetrochemical, chemical fertilizer, chemical industry, environmental protection
TrademarkRONGJIAN
OriginChina
HS Code8419909000 (not shown on supplied datasheet; confirm)
Transport PackageCarton box / ton bag / steel drum

FAQs

What is a metal VSP (inner arc) ring, and what is special about its shape?

A metal VSP ring is a random tower packing whose walls are made of curved inner arcs rather than a solid tube, giving it a look somewhere between a ring and a garland; it is also called the inner arc ring or Meller ring. The defining feature is how open the ring wall is. Instead of a closed cylinder, the wall is largely cut away and replaced by arcs that curve inward, so a large fraction of the surface is open space. That open wall lets gas and liquid move through freely and keeps the void fraction high, around 93 to 95 percent. At the same time the arcs are arranged symmetrically, which makes the whole piece geometrically regular and gives a bed that is uniform and even. So the VSP ring is, at heart, a very open, very regular ring built from inward-curving arcs.

Why does a metal VSP ring give high flux and low resistance?

The gains all trace back to the open ring wall. Because so much of the wall is open, there is little to obstruct the gas, so a VSP-ring bed passes a large flux at a low pressure drop; and the more freely the two phases move and mix over the curved surfaces, the higher the mass-transfer efficiency. The symmetric, uniform arrangement matters too: an even structure spreads the liquid and gas across the whole cross-section, so the flow does not drift to one side or carve preferred channels, the bias and channelling that quietly ruin the performance of an uneven bed. And because the arcs are smooth and curved, with no flat pockets to catch debris, the packing resists blocking and tends to keep itself clear. Large flux, low resistance, even flow, high efficiency: all of it comes from that open, curved geometry.

What is a metal VSP ring made of, and how strong is it?

The VSP ring here is made of metal, which is what gives it its mechanical strength and corrosion resistance, holding its shape under the weight of a deep bed and standing up to aggressive chemistry far better than a plastic packing would. Metal packings of this kind are normally rolled from stainless steel, with the grade chosen to suit the fluid, though the datasheet supplied with this listing did not state a specific grade; we can confirm the exact alloy and thickness for your service. What the metal buys is durability: the ring keeps working, without softening or deforming, in the hot, corrosive, continuous duty that these towers usually run. Tell us the medium and the temperature and we will confirm the alloy.

What is a metal VSP ring used for?

The metal VSP ring is a general packing for reaction and separation towers across heavy industry, petrochemical plants, chemical fertilizer works, general chemical processing and environmental installations. Its job in each is to fill the tower and give the gas and liquid a large surface to meet on, so the reactants make better contact; that raises the reaction or separation efficiency and, with it, the quality of the product. The reasons it is chosen are its own: a large flux and low resistance from the open wall, high efficiency and even flow from the regular arcs, and the strength and corrosion resistance of metal for demanding service. Where a tower needs a high-capacity, low-resistance metal packing that will not channel or block, the VSP ring suits. Send us the tower and the duty and we will confirm the size.

The metal VSP ring — the inner arc ring, or Meller ring — is a metal packing shaped roughly like a garland: a ring whose wall is largely open, made up of arcs that curve inward rather than a solid tube. That open, curved wall is what gives the packing its character. It lets a large flow through at low resistance, keeps the void high, and, because the arcs are symmetric and the piece geometrically regular, it spreads gas and liquid evenly instead of letting them drift or channel. Being metal, it adds mechanical strength and corrosion resistance on top. The result is a packing that combines high capacity, high efficiency and even flow with durability.

What each characteristic gives you:

CharacteristicWhat it gives
Large open area in the ring wallLarge flux and low gas resistance
High void fraction (93 to 95 percent)High capacity and headroom before flooding
Symmetric arcs, uniform structureEven distribution, so no bias or channelling
Smooth curved surfaces, no flat trapsResists blocking and tends to self-clear
Metal constructionHigh mechanical strength and corrosion resistance

That mix suits reaction and separation towers across petrochemical, fertilizer, chemical and environmental plants, where the packing increases the contact area between reactants and lifts both efficiency and product quality. It is made in Φ25, Φ38, Φ50 and Φ76 mm; the per-size surface area, void and packing factor are tabulated above. The Basic Info sheet supplied did not list the alloy or an HS code, so please confirm both — send us the tower and the medium and we will match the size and the grade.