Refrigerated Compressed Air Dryers
Namerah refrigerated compressed air dryers treat moisture in compressed-air lines and work alongside compressed air filters. The PS.A and PS.1 series cover 600 to 150,000 l/min, up to 16 bar, and a nominal 3 °C pressure dew point under DIN-ISO 7183 reference data.
- Flow
- 600 – 150,000 l/min
- Dew point
- 3 °C
- Max pressure
- 16 bar
- Models
- 24

PS.A — High performance dryers
PS 6.A – PS 168.A · 600 – 16,800 l/min
- Unique design with easily removable panels to facilitate inspection and maintenance.
- New high-performance heat exchanger, a perfect match to the standard air flow of an air compressor.
- Drain valve cleaning requires no tools thanks to the quick bayonet fitting.

PS.1 — Industrial dryers
PS 190.1 – PS 1500.1 · 19,000 – 150,000 l/min
- Limited pressure drop and low power consumption.
- High-efficiency refrigeration compressor with a new gas by-pass valve.
- Extremely constant dew point, functional even at 50 °C ambient temperature.

PS.A high performance dryers — all 13 models
PS 6.A – 18.A use R134a; PS 25.A and above use R407c.
| Model | Code | Volt/Ph/Hz | kW | Max A | l/min | m³/h | c.f.m. | bar / psi | G | L x D x H (cm) | kg / lbs |
|---|---|---|---|---|---|---|---|---|---|---|---|
| PS 6.A | 8193701 | 230/1/50-60 | 0.16 | 1.4 | 600 | 36 | 21 | 16 / 232 | 1/2" | 36 x 43 x 77 | 28 / 62 |
| PS 9.A | 8193702 | 230/1/50-60 | 0.19 | 1.5 | 950 | 57 | 34 | 16 / 232 | 1/2" | 36 x 43 x 77 | 29 / 64 |
| PS 12.A | 8193703 | 230/1/50-60 | 0.21 | 1.7 | 1,200 | 72 | 42 | 16 / 232 | 1/2" | 36 x 43 x 77 | 31 / 68 |
| PS 18.A | 8193704 | 230/1/50-60 | 0.29 | 2.4 | 1,800 | 108 | 64 | 16 / 232 | 1/2" | 36 x 43 x 77 | 34 / 75 |
| PS 25.A | 8193705 | 230/1/50-60 | 0.39 | 3.1 | 2,500 | 150 | 88 | 14 / 203 | 1" | 36 x 43 x 77 | 35 / 77 |
| PS 32.A | 8193706 | 230/1/50 | 0.48 | 3.6 | 3,200 | 192 | 113 | 14 / 203 | 1"1/4 | 36 x 43 x 77 | 40 / 88 |
| PS 43.A | 8193756 | 230/1/50 | 0.71 | 4.5 | 4,300 | 258 | 152 | 14 / 203 | 1"1/4 | 53.5 x 58 x 91 | 43 / 95 |
| PS 52.A | 8193708 | 230/1/50 | 0.72 | 5.2 | 5,200 | 312 | 184 | 14 / 203 | 1"1/4 | 53.5 x 58 x 91 | 44 / 97 |
| PS 63.A | 8193709 | 230/1/50 | 0.82 | 5.2 | 6,300 | 378 | 222 | 14 / 203 | 1"1/2 | 53.5 x 58 x 91 | 54 / 119 |
| PS 80.A | 8193710 | 230/1/50 | 0.71 | 8.9 | 8,000 | 480 | 283 | 14 / 203 | 1"1/2 | 53.5 x 58 x 91 | 56 / 123 |
| PS 105.A | 8193711 | 230/1/50 | 0.92 | 8.9 | 10,500 | 630 | 371 | 14 / 203 | 2" | 55.5 x 62.5 x 97.5 | 94 / 207 |
| PS 135.A | 8193713 | 230/1/50 | 1.40 | 11.2 | 13,500 | 810 | 477 | 14 / 203 | 2" | 55.5 x 62.5 x 97.5 | 96 / 211 |
| PS 168.A | 8193714 | 230/1/50 | 1.50 | 11.2 | 16,800 | 1,008 | 594 | 14 / 203 | 2" | 66.5 x 72.5 x 110.5 | 144 / 317 |
PS.1 industrial dryers — all 11 models
All models are 400/3/50, rated to 14 bar, using R407c refrigerant.
| Model | Code | Volt/Ph/Hz | kW | Max A | l/min | m³/h | c.f.m. | bar / psi | G | L x D x H (cm) | kg / lbs |
|---|---|---|---|---|---|---|---|---|---|---|---|
| PS 190.1 | 8193715 | 400/3/50 | 2.1 | 5.7 | 19,000 | 1,110 | 653 | 14 / 203 | 2"1/2 | 64.5 x 92 x 110 | 189 / 417 |
| PS 240.1 | 8193716 | 400/3/50 | 2.3 | 6.7 | 24,000 | 1,500 | 883 | 14 / 203 | 2"1/2 | 64.5 x 92 x 110 | 212 / 467 |
| PS 350.1 | 8193717 | 400/3/50 | 3.60 | 10.2 | 35,000 | 2,100 | 1,236 | 14 / 203 | DN80 | 79 x 100 x 147 | 276 / 607 |
| PS 410.1 | 8193718 | 400/3/50 | 3.90 | 11.2 | 41,000 | 2,460 | 1,449 | 14 / 203 | DN80 | 79 x 100 x 147 | 311 / 684 |
| PS 480.1 | 8193719 | 400/3/50 | 5.20 | 14.5 | 48,000 | 2,880 | 1,696 | 14 / 203 | DN100 | 114 x 121 x 175 | 463 / 1,019 |
| PS 620.1 | 8193720 | 400/3/50 | 5.90 | 15.9 | 62,000 | 3,720 | 2,191 | 14 / 203 | DN100 | 114 x 121 x 175 | 538 / 1,184 |
| PS 810.1 | 8193721 | 400/3/50 | 7.10 | 22.4 | 81,000 | 4,860 | 2,860 | 14 / 203 | DN100 | 114 x 121 x 175 | 612 / 1,346 |
| PS 900.1 | 8193746 | 400/3/50 | 8.40 | 30.1 | 90,000 | 5,400 | 3,178 | 14 / 203 | DN150 | 130 x 175 x 181 | 830 / 1,826 |
| PS 1100.1 | 8193722 | 400/3/50 | 10.80 | 37.1 | 110,000 | 6,600 | 3,885 | 14 / 203 | DN150 | 130 x 175 x 181 | 940 / 2,068 |
| PS 1200.1 | 8193747 | 400/3/50 | 11.30 | 38.8 | 120,000 | 7,200 | 4,238 | 14 / 203 | DN200 | 140 x 220 x 187 | 1,055 / 2,321 |
| PS 1500.1 | 8193748 | 400/3/50 | 16.80 | 47.8 | 150,000 | 9,000 | 5,297 | 14 / 203 | DN200 | 140 x 220 x 187 | 1,200 / 2,640 |
How to size your dryer
- 1Take your compressor's free air delivery in l/min.
- 2Multiply it by factors F1, F2, F3 and F4 for your site conditions.
- 3Choose the first model whose rated flow is equal to or above the result.
5,000 l/min at 8 bar (F1 1.05), 40 °C ambient (F2 0.79), 45 °C inlet (F3 0.67), 3 °C dew point (F4 1.00) → 5,000 x 1.05 x 0.79 x 0.67 x 1.00 = 2,777 l/min → PS 32.A.
Operating pressure (barg)
| Value | 4 | 5 | 6 | 7 | 8 | 10 | 12 | 14 |
|---|---|---|---|---|---|---|---|---|
| Factor F1 | 0.77 | 0.86 | 0.93 | 1.00 | 1.05 | 1.14 | 1.21 | 1.27 |
Ambient temperature (°C)
| Value | ≤25 | 30 | 35 | 40 | 45 |
|---|---|---|---|---|---|
| Factor F2 | 1.00 | 0.95 | 0.88 | 0.79 | 0.68 |
Air inlet temperature (°C)
| Value | ≤30 | 35 | 40 | 45 | 50 | 55 |
|---|---|---|---|---|---|---|
| Factor F3 | 1.11 | 1.00 | 0.81 | 0.67 | 0.55 | 0.45 |
Pressure dew point (°C)
| Value | 3 | 5 | 7 | 10 |
|---|---|---|---|---|
| Factor F4 | 1.00 | 1.11 | 1.19 | 1.38 |
Reference data (DIN-ISO 7183)
- Pressure dew point tpd
- 3 °C
- Air flow related to
- 20 °C, 1 bar
- Compressed air inlet temperature t1
- 35 °C
- Operating pressure p1
- 7 bar
- Cooling air temperature tc
- 25 °C
Operating limits
- Max. compressed air inlet temperature
- 55 °C
- Max. operating pressure
- 14 bar
- Ambient temperature range
- 1 – 45 °C

By-pass groups
Supplied unassembled.
| 9058162 | PS 6.A – 18.A | 1/2" |
| 9058156 | PS 25.A | 1" |
| 9058319 | PS 32.A – 52.A | 1"1/4 |
| 9058320 | PS 63.A – 80.A | 1"1/2 |
| 9058321 | PS 105.A – 135.A | 2" – 230 mm |
| 9058322 | PS 168.A | 2" – 360 mm |
Compressed air dryer FAQs
Not sure which model fits? Our engineers will size it for you.
Send us your compressor flow, working pressure and site temperature and we will recommend the right model with a quotation.
