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PTFE Perforated Plate
Packing retainer plate, DN 80 to DN 300
PTFE perforated plate used as a packing retainer in a borosilicate column — clamped between two components, DN 80 to DN 300 in five catalogue sizes.
| Product type | PTFE perforated plate — packing retainer |
|---|---|
| Material | PTFE |
| Column size range | DN 80 to DN 300 |
| Plate diameter (d) | 99 mm to 340 mm, size dependent |
| Thickness (L) | 7 mm to 16 mm, size dependent |
| Fitting | Clamped between two components |
| Pressure rating | Not published on the catalogue page — confirm with us for your duty |
| Temperature rating | Not published on the catalogue page — confirm with us for your duty |
Product overview
What it does, and where it fits.
A packed column only works while its packing stays where it was loaded. Rising vapour lifts the bed, surging liquid disturbs it, and a bed that has shifted channels — the column loses the contact area it was designed around and separation falls away. The catalogue's description of this item is exactly that job: it is used as packing retainers to prevent the packing from moving.
The plate is solid PTFE, perforated across its face so vapour and liquid pass through freely while the packing above it cannot. Because it is clamped between two components rather than fixed into the glass, nothing is bonded, drilled or cemented inside the column — the plate is captured by the joint itself and comes out again when the sections are parted.
Five references cover DN 80 to DN 300. Read the table in pairs: DN is the column the plate is sized for, d is the diameter of the plate itself, and L is its thickness — 7 mm at DN 80 rising to 16 mm at DN 300, because a larger plate has to carry a deeper, heavier bed without deflecting.
Features
Built into every unit.
- Retains the packing bed against vapour lift and liquid surge
- Perforated across the full face — free passage for vapour and liquid
- Clamped between two components; nothing is bonded or drilled into the glass
- Virgin PTFE construction throughout
- DN 80 to DN 300 in five catalogue references
- Thickness stepped with size, 7 mm at DN 80 to 16 mm at DN 300
Benefits
Why it earns its place in the line.
- Virgin PTFE — inert to almost every process medium a glass column will see
- Clamped between two components, so no adhesive and no fixings enter the column
- Will not soften, swell or embrittle across the working range of a borosilicate column
- Non-wetting surface sheds liquid instead of holding it, so nothing pools on the plate
- Removable at a shutdown — lift it out with the section above, no cutting or drilling
Applications & industries
Where it is specified.
Typical applications
- Retaining random or structured packing in a fractionating column
- Supporting a packed bed above a column section joint
- Preventing bed lift in columns running high vapour velocity
- Absorption and scrubbing columns where the bed must stay level
- Any packed section that has to be broken down and repacked between campaigns
Industries served
- Chemical processing
- Pharmaceutical
- Fine chemicals & dyes
- Distillation & solvent recovery
- Water & effluent treatment
- Agrochemicals
- Research & pilot plant
Technical data
Specification for PTFE Perforated Plate.
Figures below are for this product only — every item in the range carries its own dimension table.
| Product type | PTFE perforated plate — packing retainer |
|---|---|
| Material | PTFE |
| Column size range | DN 80 to DN 300 |
| Plate diameter (d) | 99 mm to 340 mm, size dependent |
| Thickness (L) | 7 mm to 16 mm, size dependent |
| Fitting | Clamped between two components |
| Pressure rating | Not published on the catalogue page — confirm with us for your duty |
| Temperature rating | Not published on the catalogue page — confirm with us for your duty |
| Catalogue reference | ATCP series, e.g. ATCP6 = DN 150 |
| Cat. Ref. | DN | d | L |
|---|---|---|---|
| ATCP3 | 80 | 99 | 7 |
| ATCP4 | 100 | 132 | 9 |
| ATCP6 | 150 | 184 | 10 |
| ATCP9 | 225 | 254 | 12 |
| ATCP12 | 300 | 340 | 16 |
All dimensions in mm, transcribed exactly from the catalogue page. The catalogue states: “DN refers the nominal diameter of the column.” DN is the column this item is sized for, not a dimension of the part. d is the diameter of the plate and L its thickness.
FAQ
Questions we are asked about this item.
It is a packing retainer. The catalogue states it is used to prevent the packing moving — it holds the bed down against vapour lift so the column keeps the contact area it was designed around.
It is not fixed. The catalogue states it can be clamped between two components, so the plate is captured by the joint between two sections and lifts straight out when they are parted.
Because DN is the nominal diameter of the column, not of the plate. d is the plate's own diameter, sized so its rim is trapped in the joint rather than sitting inside the bore.
The catalogue page for this item states only that it is clamped between two components. Tell us the joint you are clamping it into and we will confirm what, if anything, is needed alongside it.
Related products
Commonly specified alongside PTFE Perforated Plate.
Pipe Section
Spacers, Bellows, Strainers & Accessories
Flanges, Inserts & Adaptors
Enquiry
Tell us your line size — we'll confirm the spec.
Send the bore, the media, the temperature and pressure, and the flange standard you work to. Drawings and custom sizes welcome.
Not sure which spec fits your process?
Send your requirement — media, temperature, pressure, dimensions — and we'll recommend the right product or fabricate it.
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