QDT SERIES (20-1800) AIR FILTERS

ATLAS COPCO QDT SERIES (20-1800) AIR FILTERS

The ideal solution for oil vapor filtration

Oil vapors pose a serious threat to compressed air systems, they can damage air-powered equipment and contaminate end products leading to increased operating costs. Top-quality air filters developed by Atlas Copco can protect your operation and from oil vapor.

QDT filters consist of a high-efficiency activated carbon tower that removes oil vapor, hydrocarbons and odors from your compressed air supply. Using adsorption, the activated carbon layers will reduce the residual oil content to lower than 0.003 mg/m³.

Thanks to an optimal internal flow path, the filters of the QDT series also offer a low pressure drop that stays minimal throughout the filter’s lifetime. Their robust design and optimal filter material also make the QDT series highly reliable.

Description

If oil vapours enter the compressed air stream, they can damage air-powered equipment and contaminate end products, which can increase the operating costs of businesses significantly.

That is why Atlas Copco has developed a series of top-quality air filters that can protect your operation and your investments from oil vapor. The filters of the QDT and QD+ series can help your equipment last longer and ensure that your end products meet even the most stringent quality standards.

QDT performance

QDT
Contaminant	Oil vapor
Test method	ISO 8573-5:2001, ISO 12500-2:2007
Maximum oil carry-over (mg/m³)*	0.003
Average dry pressure drop (mbar)	125 (QDT 20-310)
	72 (QDT 425-1800)
Element service	After 4,000 operating hours or 1 year (up to QDT 310)
	After 8,000 operating hours or 1 year (from QDT 425)
Precede with	Water separation UD+ or DD+/PD+
	Dryer
* After UD+ or DD+/PD+.

QDT series technical specifications

If you know that a filter from the QDT series is the ideal solution for you, then you can find detailed information on the specifications below.

Correction factors

For other compressed air inlet temperatures, please multiply the filter capacity by the following correction factor (Kt):

Inlet temperature °C	20	25	30	35	40	45	50	55	60
Inlet temperature °F	68	77	96	95	104	113	122	131	140
Correction factor	1	1	1	1	0.85	0.67	0.59	0.48	0.42

For other compressed air inlet pressures, please multiply the filter capacity by the following correction factor (Kp):

Inlet pressure bar	3	4	5	6	7	8	9	10	11	12	13
Inlet pressure psi	44	58	73	87	102	116	131	145	160	174	193
Correction factor	0.57	0.77	0.83	1	1	1	1	1.05	1.05	1.11	1.18

Example

•Working temperature 50°C, pressure 12 bar(g), compressed air flow 120 l/s.
•Multiply the nominal capacity of the selected filter with the corresponding correction factorsat the required working temperature and pressure to obtain the capacity at operating condition
-QDT 150: 150l/s * 0.59 * 1.11 = 98l/s => A QDT 150 filter is not large enough
-QDT 195: 195l/s * 0.59 * 1.11 = 128l/s => A QDT 195 filter is the correct size

UD+ & QDT: the winning combination

The Atlas Copco UD+ – QDT filter train meets the requirements of air purity class 1 for total oil, according to ISO 8573-1:2010, in a typical compressed air installation.

Certification

QDT series – ISO 8573-5:2001

Check out the brochure for more information on the QD+ and QDT series.

For filtering out oil vapor (as well as hydrocarbons and odors), Atlas Copco also offers the high-pressure H series of filters and its silicone-free SFA series.

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