Compressors
Compressors by technology
Compressors and blowers generate overpressure – for blowing air, pneumatic conveying and aeration. This page lists the series of the manufacturers Ehrler & Beck carries, sorted by design: what the manufacturers offer today and which series were available from us before.
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- 9former series
Compressors
Claw compressors
Two claw rotors turn in opposite directions without touching each other. They trap the air, compress it inside the housing and push it out to the pressure side. There is no oil in the compression chamber, so the compressed air stays clean.
Operating principle with a drawing: Claw vacuum pumps
Current series
| Manufacturer | Series | Models | Flow rate | Max. overpressure | At Ehrler & Beck |
|---|---|---|---|---|---|
| Atlas Copco | DZS AP | DZS 065AP, 150AP, 300AP | 65–238 m³/h | up to 2,300 mbar | View series |
| Becker | BCP | BCP 100, 150, 300 | 100–275 m³/h | up to 2,000 mbar | View series |
| Becker | VARIAIR BCP | VARIAIR BCP 300 | 328 m³/h* | up to 1,100 mbar | View series |
| Busch | MINK | MM 1102, 1104, 1142, 1144 BP · MM 1202, 1252, 1322 AP · MI 1502 BPplus MA 0018 A for mobile applications (24 V DC, 18 m³/h, 400 mbar) | 62–500 m³/h | up to 2,000 mbar | On request |
| Elmo Rietschle | C-DLR | C-DLR 100, 150, 301, 401, 501 | 100–500 m³/h | up to 2,200 mbar | On request |
| DVP | VA | VA 155, 155-1, 315, 315-1 | 155–250 m³/h | up to 2,000 mbar | On request |
As of October 2026. Manufacturers’ figures at 50 Hz: flow rate from the smallest to the largest size, overpressure as the highest value of the series. * with frequency converter: the manufacturer’s maximum value.
Formerly at Ehrler & Beck
| Manufacturer | Series | Status |
|---|---|---|
| Leybold | CLAWVAC OP 150, OP 300 | No longer in Leybold’s current range. |
| Elmo Rietschle | C-DLR 60, 250, 300, 400, 500 | No longer listed on Elmo Rietschle’s website; current: C-DLR 100, 150, 301, 401, 501. |
Compressors
Dry-running rotary vane compressors
An eccentrically mounted rotor carries vanes that trap the air in chambers; towards the pressure side the chambers get smaller and compress the air. The vanes run dry, without oil in the compression chamber.
Operating principle with a drawing: Dry-running rotary vane vacuum pumps
Current series
| Manufacturer | Series | Models | Flow rate | Max. overpressure | At Ehrler & Beck |
|---|---|---|---|---|---|
| Becker | DT | DT 4.2 – DT 4.40 K | 1.9–40 m³/h | up to 1,000 mbar | View series |
| Becker | KDT | KDT 3.60, 3.80, 3.100, 3.140 | 54–129 m³/h | up to 1,500 mbar | View series |
| Becker | VARIAIR KDT | VARIAIR KDT 3.80, 3.100, 3.140 | 77–150 m³/h* | up to 1,500 mbar | View series |
| Becker | DTLF | DTLF 2.200 – DTLF 2.500 | 174–515 m³/h | up to 1,800 mbar | View series |
| Becker | VARIAIR DTLF | VARIAIR DTLF 2.250, 2.500 | 290–584 m³/h* | up to 1,700 mbar | View series |
| Busch | SECO SD | SD 1010 C, 1016 C, 1025 C, 1040 D, 1063 B, 1080 B, 1100 C | 10–88 m³/h | up to 1,500 mbar | On request |
| Elmo Rietschle | V-DTE | V-DTE 3, 6, 8, 10 | 3.5–10 m³/h | up to 1,000 mbar | On request |
| Elmo Rietschle | V-DTN | V-DTN 16, 26, 41 | 17–43.5 m³/h | up to 1,000 mbar | On request |
| Elmo Rietschle | V-DTR | V-DTR 61 – 141 | – | up to 1,500 mbar | On request |
| DVP | CB | CB 10, 12 | 10–12 m³/h | up to 600 mbar | On request |
| DVP | CC | CC 60, 80, 100, 140 | 60–130 m³/h | up to 1,300 mbar | On request |
As of October 2026. Manufacturers’ figures at 50 Hz: flow rate from the smallest to the largest size, overpressure as the highest value of the series. * with frequency converter: the manufacturer’s maximum value.
Formerly at Ehrler & Beck
| Manufacturer | Series | Status |
|---|---|---|
| Elmo Rietschle | V-DTA 60, 80 | No longer in Elmo Rietschle’s range; current: V-DTR. |
| Busch | SECO SD 1040 C, SD 1140 C | In the range today: SD 1040 D; the largest size today is SD 1100 C. |
Compressors
Screw compressors
Two screw rotors turn in opposite directions and carry the air in the chambers between their flanks from the inlet to the outlet, where it leaves compressed.
Operating principle with a drawing: Screw vacuum pumps
Current series
| Manufacturer | Series | Models | Flow rate | Max. overpressure | At Ehrler & Beck |
|---|---|---|---|---|---|
| Becker | VADS | VADS 1500+ | 1,230 m³/h* | up to 1,000 mbar | View series |
As of October 2026. Manufacturers’ figures at 50 Hz: flow rate from the smallest to the largest size, overpressure as the highest value of the series. * with frequency converter: the manufacturer’s maximum value.
Compressors
Liquid ring compressors
An eccentrically mounted impeller forms a rotating ring with the operating liquid. The cells between the blades get smaller towards the pressure side and compress the gas – suitable for humid gases and gases containing vapour.
Operating principle with a drawing: Liquid ring vacuum pumps
Current series
| Manufacturer | Series | Models | Flow rate | Max. overpressure | At Ehrler & Beck |
|---|---|---|---|---|---|
| Busch | DOLPHIN LN | DOLPHIN LN 3001 A | 2,300 m³/h | 3 bar (abs.) | On request |
| Elmo Rietschle | L-BV2 | 2BV2 061, 070, 071flow rate and pressure per type from the characteristic curve | – | – | On request |
| Elmo Rietschle | L-BV5 | 2BV5 110, 111, 121, 131, 161flow rate and pressure per type from the characteristic curve | – | – | On request |
| Elmo Rietschle | L-BV7 | 2BV7 060, 061, 070, 071flow rate and pressure per type from the characteristic curve | – | – | On request |
As of October 2026. Manufacturers’ figures at 50 Hz: flow rate from the smallest to the largest size, overpressure as the highest value of the series.
Compressors
Rotary lobe compressors
Two rotary lobes turn in opposite directions without touching each other, on the Roots principle, and carry the air to the pressure side without internal compression. Oil is only found in the gearbox, not in the pumping chamber.
Operating principle with a drawing, and all models we carry as products, with filters: Rotary lobe blowers
Current series
| Manufacturer | Series | Models | Flow rate | Max. overpressure | At Ehrler & Beck |
|---|---|---|---|---|---|
| Busch | TYR WT CP | TYR WT 0100 – 0730 CP · 0600, 0730 CP PLUSflow rate depends on the speed (V-belt drive) | 152–4,000 m³/h | up to 1,000 mbar | View series |
As of October 2026. Manufacturers’ figures at 50 Hz: flow rate from the smallest to the largest size, overpressure as the highest value of the series.
Formerly at Ehrler & Beck
| Manufacturer | Series | Status |
|---|---|---|
| Elmo Rietschle | R-WPB 120 – R-WPB 8300 | Elmo Rietschle no longer offers rotary lobe compressors. |
| Busch | Cat (WD) | No longer in Busch’s range; current: TYR. |
Compressors
Side channel compressors
An impeller accelerates the air, which circulates several times in the side channel and builds up pressure – oil-free and with little pulsation. For large flow rates at small pressure differences; most side channel blowers work either as compressors or as vacuum generators.
Operating principle with a drawing, and all models we carry as products, with filters: Side channel blowers
Current series
| Manufacturer | Series | Models | Flow rate | Max. overpressure | At Ehrler & Beck |
|---|---|---|---|---|---|
| Atlas Copco | DBS | DBS 70 – DBS 1020 | 74–1,022 m³/h | up to 400 mbar | View series |
| Atlas Copco | DBSt | DBSt 410 – DBSt 1980 | 408–1,985 m³/h | up to 375 mbar | View series |
| Atlas Copco | DBD | DBD 90 – DBD 430 | 91–430 m³/h | up to 550 mbar | View series |
| Atlas Copco | DBDt | DBDt 140 – DBDt 1010 | 139–1,007 m³/h | up to 550 mbar | View series |
| Becker | SV | SV 130/1 – SV 1100/2 | 70–1,050 m³/h | up to 530 mbar | View series |
| Becker | VARIAIR SV | VARIAIR SV 130 – SV 700 | 140–1,180 m³/h* | up to 570 mbar | View series |
| Becker | VASF | VASF 2.50 – 2.120 | 24–143 m³/h | up to 570 mbar | View series |
| Busch | SAMOS | SAMOS SB, SI | 40–2,200 m³/h | up to 480 mbar | View series |
| Elmo Rietschle | G-BH | G-BH1, G-BH2, G-BH7, G-BH9, G-BH100flow rate and pressure per type from the characteristic curve | – | up to 1,050 mbar | View series |
| Elektror | SD / SE | SD 20 M – SD 820, SE 20 – SE 42SE = single-phase version | 52.8–852 m³/h | up to 420 mbar | On request |
| Elektror | 1SD | 1SD 210 – 1SD 910 | 79.8–1,050 m³/h | up to 500 mbar | On request |
| Elektror | 2SD | 2SD 220 – 2SD 920, 2SD 740, 840 | 88.2–1,110 m³/h | up to 800 mbar | On request |
| FPZ | MS | 06R MS – e12 MS | 55–1,024 m³/h | up to 450 mbar | On request |
| FPZ | TS | K05 TS – e12 TS | 334–2,106 m³/h | up to 375 mbar | On request |
| FPZ | MD | 15DH MD – e12 MD | 50–521 m³/h | up to 650 mbar | On request |
| FPZ | TD | K04 TD – e12 TD | 139–1,046 m³/h | up to 600 mbar | On request |
| DVP | TSL | TSL 40 – TSL 2200 | 70–2,200 m³/h | up to 460 mbar | On request |
| DVP | TDL | TDL 80 – TDL 550 | 85–520 m³/h | up to 660 mbar | On request |
| DVP | TPL | TPL 550 – TPLV 2100 | 500–2,050 m³/h | up to 590 mbar | On request |
As of October 2026. Manufacturers’ figures at 50 Hz: flow rate from the smallest to the largest size, overpressure as the highest value of the series. * with frequency converter: the manufacturer’s maximum value.
Formerly at Ehrler & Beck
| Manufacturer | Series | Status |
|---|---|---|
| Becker | SV 701/1 | No longer in Becker’s range; current: SV 700/1. |
| Elmo Rietschle | G-SAP, G-SAH | No longer in Elmo Rietschle’s range; current: the G-BH series. |
Compressors
Radial compressors
An impeller turning at high speed throws the air outwards into the spiral housing and so builds up pressure – for very large flow rates at small pressure differences.
Operating principle with a drawing, and all models we carry as products, with filters: Radial blowers
Current series
| Manufacturer | Series | Models | Flow rate | Max. overpressure | At Ehrler & Beck |
|---|---|---|---|---|---|
| Becker | VATP / VARIAIR RV | VATP 1600, VARIAIR RV 2.1944/10 | 1,570 m³/h* | up to 410 mbar | View series |
| Elmo Rietschle | F-RB | F-RB 1175 | 500–2,500 m³/h* | up to 180 mbar | View series |
| Elektror | HRD | HRD 1/2T – HRD 7/23 | 360–5,760 m³/h | up to 164 mbar | On request |
| Elektror | A-HP | A-HP 225/37 – A-HP 450/35 | – | up to 176 mbar | On request |
| Elektror | S-HP | S-HP 265/18 – S-HP 470/35 | – | up to 152.5 mbar | On request |
| Elektror | S-XP | S-XP 240/40, 245/20 | – | up to 220 mbar | On request |
| Elektror | RD | RD 10 – RD 94 | 294–7,800 m³/h | up to 85.5 mbar | On request |
| Elektror | ND | D 03 – D 092, E 03 – E 066, 2D 04 – 2D 08low-pressure fans | 192–6,000 m³/h | up to 22 mbar | On request |
As of October 2026. Manufacturers’ figures at 50 Hz: flow rate from the smallest to the largest size, overpressure as the highest value of the series. * with frequency converter: the manufacturer’s maximum value.
Formerly at Ehrler & Beck
| Manufacturer | Series | Status |
|---|---|---|
| Elmo Rietschle | F-RRE / F-RLE (F-RER / F-REL) | No longer in Elmo Rietschle’s range; current: F-RB 1175. Outdated models |
Pressure/vacuum pumps
Overpressure and vacuum
Machines that generate overpressure and vacuum at the same time – dry-running rotary vane and claw pumps from Becker (T, DVT) and Elmo Rietschle (V-KTR, C-KLR) – are products in our pressure/vacuum pumps section.
Frequently asked questions
Questions about compressors
What is the difference between a compressor and a vacuum pump?
Both work on the same principles. A compressor delivers the air at overpressure on its pressure side; a vacuum pump draws it off on its suction side. Side channel, radial and rotary lobe blowers are often offered for both; pressure/vacuum pumps generate overpressure and vacuum at the same time.
Which technology suits blowing air and pneumatic conveying?
Side channel and radial compressors suit large flow rates at low pressures, rotary lobe compressors large flow rates up to about 1 bar. Claw and dry-running rotary vane compressors reach higher overpressures at smaller flow rates. The tables give the highest overpressure of each series.
Do the compressors work oil-free?
Claw, dry-running rotary vane, rotary lobe, side channel and radial compressors work without oil in the compression chamber; in rotary lobe compressors only the gearbox is lubricated. Liquid ring compressors work with an operating liquid.
I have an older compressor – can you name a current equivalent?
Yes. Send us the type designation from the rating plate, for example older Rietschle types (side channel: SKG, SKGS, SKP; rotary vane: CLFD, DCLF, TL, TR, CLFT, DFT, DTB; radial: RGES) or older Becker generations (DT 3, KDT 2). We name a current series and check the spare parts. Send an enquiry
Do you also supply spare parts and service for compressors?
Yes. Ehrler & Beck supplies original spare parts and accessories and carries out maintenance and repair.
Which compressor suits your application?
Tell us the flow rate, the overpressure and the medium – we advise you on the selection, spare parts and service.
