Pall Ring

25mm Plastic Pall Ring for Efficient Filtration & Packing

Product Name			Plastic Pall Ring
Material			PP/RPP/PVC/CPVC/PVDF/PTFE,etc
Life Span			>3 years
Size	Inch/mm	Surface Aream2/m3	Void Volume %	Packing Number pieces/ m3	Packing Density Kg/m3	Dry Packing Factor m-1
Size	Inch/mm	Surface Aream2/m3	Void Volume %	Packing Number pieces/ m3	Packing Density Kg/m3	Dry Packing Factor m-1
3/5”	16161	188	91	170000	85	275
1”	25251.2	175	90	53500	69	239
1-1/2”	38381.4	115	89	15800	69	220
2”	50501.5	93	90	6500	52	127
3”	76762.6	73.2	92	1927	48	94
4”	1001003	52.8	94	1000	48	82

product details

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25mm Plastic Pall Ring Core Features

High Mass Transfer Efficiency: Windowed structure with inner blades improves gas–liquid distribution and utilizes both inner and outer surfaces, boosting efficiency by ~20% vs. Raschig rings.

Low Pressure Drop: 50% lower than Raschig rings; enables higher throughput at the same pressure drop.

Superior Chemical Resistance: PP/PVDF grades resist acids, alkalis, and organic solvents; suitable for pH 1–14 and temperatures –20°C to 120°C.

Lightweight & Durable: Low density reduces tower load; injection-molded for consistent quality and long service life.

25mm Plastic Pall Ring Physical & Chemical Properties

Performance/ Material	PE	PP	RPP	PVC	CPVC	PVDF
Density(g/cm3) (after injection molding)	0.98	0.96	1.2	1.7	1.8	1.8
Operation Temp.(℃)	90	＞100	＞120	＞60	＞90	＞150
Chemical Corrosion Resistance	GOOD	GOOD	GOOD	GOOD	GOOD	GOOD
Compression Strength(Mpa)	＞6.0	＞6.0	＞6.0	＞6.0	＞6.0	＞6.0
Performance/ Material	PE	PP	RPP	PVC	CPVC	PVDF

Pall Ring Typical Applications & Material Selection Guide

Typical Applications
Gas Scrubbing: Desulfurization, denitrification, CO₂ absorption, and VOC removal.
Distillation & Absorption: Petrochemical, fine chemical, and pharmaceutical separation columns.
Water Treatment: Wastewater stripping, ammonia removal, and ozone contact towers.
Pollution Control: Flue gas washing, acid mist purification, and exhaust treatment.

Material Selection Guide
PP (Polypropylene): Best for general corrosive services; low cost, widely used.
PVDF: For strong acids, halogens, and high-purity processes; superior temperature and chemical resistance.
CPVC: Suitable for moderate chlorinated and acidic environments.

Why Choose 25mm Pall Rings?
Compared to smaller (16mm) or larger (38mm) sizes, 25mm balances surface area, void fraction, and pressure drop, making it the most versatile size for mid-scale towers (diameter 0.5–2m) and medium flow rates.