Knitted wire mesh demister pads
Knitted wire demister pads with defined density, depth and support grids.
Product detailsDrawing-based manufacturing
Demister pads and mesh blocks
Knitted wire-mesh demister pads collect entrained liquid droplets from gas and provide a drainage path for the coalesced liquid. Complete pads, manway-sized segments and compressed knitted-mesh blocks each have a defined geometry, support and operating function.
- Density examples
- 100–300 kg/m³
- Depth examples
- 100–150 mm
- Forms
- One-piece · segmented · block
Metal filtration componentsDemister pad and mesh block configurations
Compare demister pads and mesh blocks
Vessel diameter and pad thickness alone are not a process specification.
| Construction | Application and fit | Confirm first | Find a product |
|---|---|---|---|
| Circular demister pads | The vessel uses a round cross-section and full-width pad. | Vessel ID, pad thickness, support, retention and access opening. | Filter matching products |
| Segmented vessel pads | The pad must pass through a manway or limited access opening. | Segment layout, joints, installation order, retainers and vessel ID. | Filter matching products |
| Knitted mesh blocks | The application uses a compact block rather than a full vessel pad. | Block size, density, compression, wire, support and containment. | Filter matching products |
Knitted pads, access-sized segments and compressed blocks
Choose by vessel installation
Demister pad and mesh block configurations
Define vessel geometry, access and gas-liquid duty before selecting pad density, segmentation and support.
01
Circular demister pads
Round pads for vertical vessels, columns and separators.
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02
Segmented vessel pads
Multi-piece pads sized to pass through a restricted access opening.
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03
Knitted mesh blocks
Compact shaped blocks for local separation, silencing or equipment inserts.
View matching products →Demister pads and mesh blocks
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3 products
Segmented demister pads
Numbered knitted-mesh demister segments with matched grids, joint contact and support layouts.
Product details
Compressed knitted mesh blocks
Compressed metal-mesh blocks, rings and cylinders for coalescing, damping and silencing.
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Construction
How a pad is built and installed
- Collection mechanismDroplets strike the wires, merge and drain. Low velocity may reduce impaction; excessive velocity can carry collected liquid back into the gas.
- Bulk densityBulk density is dry knitted-mesh mass divided by the mesh envelope volume. A circular body 1.0 m in diameter and 0.15 m deep has a volume of approximately 0.118 m³. The specified density determines mesh mass; support grids and fasteners are recorded separately.
- Segmented padsSegments allow installation through a manway. Installed joints must close without gaps that let gas bypass the pad.
- Density and pad depthCommon pad constructions specify mesh bulk density of 100–300 kg/m³ and depth of 100–150 mm as separate inputs. Bulk density is dry knitted-mesh mass divided by its envelope volume; grid and fastening mass are recorded separately.
01Collection mechanism
02Bulk density
03Segmented pads
04Density and pad depth
From knitted mesh to a functional pad or block
Continuous knitted mesh forms interlocking wire loops. Crimping, layering and winding build an open pad body; controlled mould compression produces rings, washers and shaped blocks. The delivered state identifies the geometry and function of each product.
A demister body captures droplets on the wire surfaces and allows them to coalesce and drain. A compressed block is specified by shape, mass or density and its filtration, cushioning or acoustic task. Structured packing belongs to tower mass transfer and uses its own channel geometry and installation arrangement.
Plan segmentation around access and drainage
The assembly drawing shows gas flow, liquid drainage, support ledges, lower and upper grids, and hold-downs. Numbered segments fit through the clear access opening and join into the vessel working section. Contact at segment seams and the perimeter keeps the gas passing through the pad body.
Keep liquid exits open at supports and joints. Install the knitted layers in their defined position and check for loose edges after fastening the grids. Maintenance access reaches the collection surface and drainage side, so deposits can be removed and the replacement segments returned to their numbered positions.
What we need to size a demister
Gas velocity, liquid loading and deposit formation establish the operating duty; mesh structure, density, depth and drainage are selected together.
Vessel diameter and access opening
Controls shape and segmentation. Show the vessel section, manway clear opening and internal obstructions on the installation drawing.
Gas and liquid properties
Supports separation review. Include gas and liquid density at the operating temperature and pressure, with viscosity and corrosive constituents.
Flow range and pressure-drop limit
Defines the operating window. Give minimum, normal and maximum gas rates and the differential-pressure monitoring arrangement.
Droplet and solids loading
Affects mesh and fouling risk. Describe droplet loading, solids and deposit formation to establish drainage and cleaning access.
Material and corrosion environment
Guides wire and support selection. Identify the alloy of mesh, grids and fasteners separately and match them to process chemistry.
Grid, retention and installation details
Prevents movement and bypass. Provide segment numbering, support ledges, hold-downs and the direction of liquid drainage.
Pad assembly details from mesh body to vessel support
| Part | Specified feature | Operating role | Assembly check |
|---|---|---|---|
| Knitted body | Alloy, wire form, dry mass and depth | Droplet contact and coalescence | Layer position and loose edges |
| Support grids | Bar pattern, contact and hold-downs | Retain the pad under flow loads | Support engagement and fastening |
| Segment seams | Numbered layout and meeting edges | Close the working cross-section | Joint contact and perimeter fit |
| Drainage route | Liquid exit direction and clear space | Return coalesced liquid | Open paths at grids and supports |
Demister pads and mesh blocks
Applications
Demister pads are installed downstream of gas–liquid contact to collect entrained droplets before the gas leaves the vessel.
Evaporators
Reduce entrained liquid carryover in vapor streams.
Scrubbers
Collect droplets downstream of gas-liquid contact.
Knockout vessels
Retain residual entrainment where gas and liquid loading suit knitted pads.
Distillation and packed towers
Pads at gas or vapor outlets collect entrained glycol, amine, solvent or other process-liquid droplets before the overhead stream reaches downstream equipment. The pad and supports preserve a defined liquid-drainage route.
Inspect the installed pad
Inspect body geometry, wire identity, grid restraint and unobstructed drainage against the assembly drawing.
Wire and density
Verify alloy, wire diameter, mass and pad volume.
Grid and segments
Check restraint, segment fit and support-ring contact.
Drainage
Keep discharge paths clear and close perimeter gaps.
Pad identity and assembly mass
Link the knitted-mesh material, dry mass and external volume to each pad or segment. Keep support-grid and fastening masses separate, and use the segment identification on the installation layout.
Documented product examples
Knitted wire mesh demister pads
Knitted wire-mesh demister pads remove entrained liquid droplets from gas streams by impingement and drainage. Pad density, depth, wire form and support grid must be sized for the vessel duty.
Compressed knitted mesh blocks
Compressed knitted-mesh blocks provide a resilient metal-mesh form for coalescing, damping or contact applications. Wire type, compression density and finished shape define the component.
Demister pads and mesh blocks
Technical resources
Technical guide
Demister pad sizing inputs
Prepare gas and liquid conditions, flow range and vessel geometry for demister selection.
Demister pad sizing inputs→Technical guide
Cleaning reusable metal filter elements
Plan a cleaning trial around contaminant, media construction and joint integrity before declaring a metal element reusable.
Read guide→Knitted mesh pads for industrial gas mist removal
Connect droplet collection with gas velocity, support and liquid drainage.
Knitted mesh pads for industrial gas mist removal→How to specify a custom metal filter
Define drawing datums, material identity, fastening and inspection for the complete assembly.
How to specify a custom metal filter→Demister pads and mesh blocks
Questions before ordering
Can a demister be specified as a 10 µm liquid filter?
Demisting is defined by gas velocity, droplet size, liquid properties and knitted structure. A 10 µm liquid-particle rating and a demister droplet-removal duty describe different separation mechanisms.
Why can a denser pad worsen carryover?
More wire provides extra droplet-contact area and needs drainage matched to the liquid load. Flooding, deposits and re-entrainment reduce the benefit of that additional contact area.
How are compressed knitted blocks specified?
Compressed blocks have a defined shape, mass or bulk density and functional task. Filtration, damping and cushioning each receive the corresponding flow, loading and mounting specification; gas demisting uses a pad construction with its own drainage design.
What access dimensions are needed for a segmented pad?
Supply the clear manway width and height, neck length, nearby obstructions and the internal support positions. The segment plan includes each piece’s envelope, installation order and joint positions, so the full pad can be assembled inside the vessel.
Why record mesh mass separately from assembly mass?
Bulk density characterises the knitted body using its dry mass and external volume. The grids and fasteners add structural mass. Separate records keep replacement pads comparable and identify whether a measured mass belongs to mesh or the complete assembly.
Related products and guidance
Technical enquiry
Define the dimensions, media, joints and inspection records before confirming the order.