Pall rings well developed by BASF AG around 1940’s based on the raschig ring. They are still widely used in the industry owing to their good capacity characteristics at low- pressure drops. Punched windows on the outside facilitate better vapour flow and increase capacity as compared to raschig rings.
|Size||Nos. / Cu.m.||Surface Area (m²/m³)||Void Fraction %||Packing Factor (F)|
Stainless Steel, Duplex Stainless Steel, Nickel Based Alloys, Titanium.
Other materials available on request.