DRYFAST® & DRYFAST ULTRA® Solid PTFE Dry Vacuum Pumps
For Chemical Duty


Features
- PTFE construction for aggressive vapors & gases
- Vacuum to 2 torr, throughput to 70 L/min
- No water or oil
- Quiet operation
Ordering Information1 & Specifications
| Catalog Number | |||
|---|---|---|---|
| Wired for 115V, 60 Hz, 1 PH with N. American 115V Plug |
2034B-01 $1,595.36 |
2044B-01 $1,982.24 |
2037B-01 $1,761.76 |
2047B-01 $2,203.76 |
2032B-01 $2,314.00 |
2042B-01 $2,756.00 |
|
| Wire for 220V, 50 Hz, 1 PH with Cont. Euro. (Schuko) Plug2. |
2034C-02 $1,595.36 |
2044C-02 $1,982.24 |
2037C-02 $1,761.76 |
2047C-02 $2,203.76 |
2032C-02 $2,314.00 |
2042C-02 $2,756.00 |
|
| DRYFAST® | Welch Model | 2034 | 2044 | 2037 |
| Free Air Displacement | |||
| CFM (L/min) @ 60 Hz | 0.9(25) | 1.2(35) | 1.8(50) |
| m3/hr (L/min) @ 50 Hz | 1.25(21) | 1.75(29) | 2.5(42) |
| Max. Vacuum, in. Hg | 29.6 | 29.6 | 28.5 |
| Ultimate Pressure, Torr (mbar) | 9 (12) | 9 (12) | 35(47) |
| Tubing Needed, I.D. in. | 1/4 | 1/4 | 1/4 |
| Weight, lbs. (kg) | 21.25(9.6) | 21.25(9.6) | 21.25(9.6) |
| Dimensions L x W x H in. (cm) | 13.8 x 6.8 x 8.8 (35.2 x 17.2 x 22.3) |
13.8 x 6.8 x 8.8 (35.2 x 17.2 x 22.3) |
13.8 x 6.8 x 8.8 (35.2 x 17.2 x 22.3) |
| Ship Weight, lbs (kg) | 23(10.4) | 23(10.4) | 23(10.4) |
| DRYFAST® | DRYFAST ULTRA® | ||
| Welch Model | 2047 | 2032 | 2042 |
| Free Air Displacement | |||
| CFM (L/min) @ 60 Hz | 2.5(70) | 0.9(25) | 1.2(35) |
| m3/hr (L/min) @ 50 Hz | 3.5(58) | 1.25(21) | 1.75(29) |
| Max. Vacuum, in. Hg | 28.5 | 29.85 | 29.85 |
| Ultimate Pressure, Torr (mbar) | 35 (47) | 2(3) | 2(3) |
| Tubing Needed, I.D. in. | 1/4 | 1/4 | 1/4 |
| Weight, lbs. (kg) | 21.25(9.6) | 21.25(9.6) | 21.25(9.6) |
| Dimensions L x W x H in. (cm) | 13.8 x 6.8 x 8.8 (35.2 x 17.2 x 22.3) |
13.8 x 6.8 x 8.8 (35.2 x 17.2 x 22.3) |
13.8 x 6.8 x 8.8 (35.2 x 17.2 x 22.3) |
| Ship Weight, lbs (kg) | 23(10.4) | 23(10.4) | 23(10.4) |
1. All pumps supplied with an exhaust muffler, loose hose barb for exhaust port, and an installed intake hose barb.
2. 50 Hz models provided with CE marking.
PTFE Pump Accessories
Vacuum Regulator

Use to control vacuum level between 6.3"Hg and 29.9"Hg. A bourdon tube dial gauge is provided to monitor vacuum level. The inlet of the regulator accepts 1/4" ID vacuum hose.
Ordering Information
| Vacuum Regulator | |
|---|---|
| Cat No. | 1421D $256.39 |
| Pump Model | 2012,2022,2030,2015,2017,2010,2021,2031 |
Separator/Liquid Trap

The separator is used on the inlet to inhibit ingestion by the pump of liquid droplets or particulates. A separator may also be attached to the exhaust to collect vapors liquified inside the pump and ejected out of the exhaust. The ports accept 1/4" ID vacuum hose.
Ordering Information
| Catalog No. | ||
|---|---|---|
| Use with Pump Model |
Vacuum Regulator |
Separator/ Liquid Trap |
| 2010,12 | 1421D $256.39 |
1423B $126.41 |
| 2021,22 | 1421D $256.39 |
1423B $126.41 |
| 2015 | 1421D $256.39 |
1423B $126.41 |
| 2017 | 1421D $256.39 |
1423B $126.41 |
| 2030,31 | 1421D $256.39 |
1423B $126.41 |
Maintained On/Off Foot Switch

Hands free maintained on/off pump operation. No adaptors or special connection needed. plug directly into the power source outlet 115V, 60HZ only.
Ordering Information
| Maintained On/Off Foot Switch | |
|---|---|
| Cat No. | 1430A $95.25 |
| Pump Model | 2010,2012,2022,2030,2015,2017,2511,2021, 2031,2032, 2034, 2037, 2042, 2044, 2047, 2511,2522,2534,2546,2561,2567,2581,2585 |
Momentary On/Off Foot Switch

Hands free momentary on/off pump operation. No adaptors or special connection needed. plug directly into the power source outlet 115V, 60HZ only.
Ordering Information
| Momentary On/Off Foot Switch | |
|---|---|
| Cat No. | 1430B $144.00 |
| Pump Model | 2010,2012,2022,2030,2015,2017,2511,2021, 2031,2032, 2034, 2037, 2042, 2044, 2047, 2511,2522,2534,2546,2561,2567,2581,2585 |
Momentary On/Off Foot Switch w/IEC Connections

Hands free momentary on/off pump operation with IEC connections. No adaptors or special connection needed. plug directly between the IEC power outlet and supplied line cord, 90 - 230V.
Ordering Information
| Momentary On/Off Foot Switch w/IEC Connections | |
|---|---|
| Cat No. | 1430C $144.00 |
| Pump Model | 2010,2012,2022,2030,2015,2017,2511,2021, 2031,2032, 2034, 2037, 2042, 2044, 2047, 2511,2522,2534,2546,2561,2567,2581,2585 with IEC connections |







