684 Arrow Grand Circle, Covina, CA 91722 --- 626.332.7744 --- Mon-Fri 9:30AM-6:30PM --- Sat 9AM-1PM
121 NE 40th St, Oklahoma City, OK 73105 --- 405.926.0411 --- Mon-Fri 9:30AM-6:30PM --- Sat 9AM-1PM
Welch Vacuum 2546B-01 Standard Duty Pump, 1-Head, 45 LPM, 60 Torr, 115V
Product Code WELCH-2546B-01
Features
One-head WOB-L-style piston pump with intake and exhaust catch jars for use in vacuum or pressure applications with gel dryers, concentrators, and rotary evaporators 46 liter per minute (LPM) free air displacement with vacuum to 60 Torr.
Manually adjustable vacuum and pressure levels with gauges Oil-free pump for operation without oil misting and contaminated oil disposal. 1/4 HP motor accepts 115V, 60Hz input power.
Description
The Welch Vacuum 2546B-01 one-head WOB-L-style piston pump has an 46 liter per minute (LPM) free air displacement with vacuum to 60 Torr and is suitable for use with gel dryers, concentrators, and rotary evaporators in non-corrosive environments. The vacuum/pressure pump has intake and exhaust catch jars for collecting condensation, vacuum and pressure gauges, and manually adjustable vacuum and pressure levels. It is driven by a 1/4 HP motor that accepts 115V, 60Hz input power. It connects to 3/16" inside diameter vacuum system tubing (sold separately).
Welch-Ilmvac, a subdivision of Denver Gardner, manufactures vacuum pumps, systems, and components for industrial and research applications under the Welch and Ilmvac brand names. Denver Gardner, founded in 1859, is headquartered in Milwaukee, WI.
CLICK HERE TO VIEW THE 2546B-01 MANUAL
Wetted Parts |
304 Stainless Steel, Aluminum, PTFE |
Free-Air Capacity (CFM) |
1.6 |
Free-Air Capacity (LPM) |
45 |
Free-Air Capacity (LPH) |
2700 |
Max Flow Rate (CFM) |
1.58 |
Max Flow Rate (Liters/min) |
45 |
Max Vacuum (in Hg) |
27.6 |
Max Vacuum (mbar) |
78.6 |
Max Vacuum (mm Hg) |
59 |
Max Vacuum (torr) |
59 |
Port Size |
1/4" hose barb |
Max Temperature (° F) |
104 |
Max Temperature (° C) |
40 |
Duty Cycle |
Continuous |
Power (VAC) |
115 |
Power (amps) |
3.6 |
Power (Hz) |
60 |
Motor Type |
Permanent split capacitor |
Height (in) |
10 |
Length (in) |
8 |
Height (cm) |
25.4 |
Length (cm) |
20.32 |
Height (mm) |
254 |
Length (mm) |
203.2 |
Motor |
hp1/4 |
Description |
Standard Duty Dry Vacuum Piston Pumps, 45 L/min, 115 VAC |
Local Delivery
We offer delivery services for large orders to customers from Central California all the way to San Diego. Please call our sales team for more information on weekly, bi-weekly, or monthly deliveries and pricing. 626.332.7744
Shipping Time
Our main warehouse is located near Los Angeles, you can use the map below to estimate delivery time. Most orders ship one business day after the order is placed, then the transit days will follow. Below the map you will find exceptions to these rules for certain products.

Some items we sell may be warehoused in Amazon's warehouses across the US. If the item you order happens to be in on of their warehouses it will generally arrive in 3 days. If you need to know about a specific item please feel free to contact us and we'll let you know.
Larger and heavier items have to be shipped via LTL Freight. LTL shipments tend to take longer to arrive, but they have the benefit of being much safer for heavy and delicate items. If your order has to be shipped by LTL Freight we will contact you to find out if the delivery address is a residential or commercial address, and whether a loading dock or forklift is available. The freight company will call you to arrange a delivery appointment, usually a day before.
Shipping Costs
The cost of shipping varies based on where you live, how much the order weighs, and the value of the order. We've outline our shipping guidelines below:
To Contiguous US:
Item Weight |
Shipping Costs |
0-50 lbs |
Orders over $100 ship free; |
Over 50 lbs |
The shipping cost will be automatically calculated by the system based on the weight of your items and the delivery address provided. |
To Alaska, Hawaii, and other US Territories:
Cost will be calculated by weight at time of checkout.
To Other Countries:
We currently can offer shipping service internationally.
Please contact us for international shipping cost: info@hfsusa.com