Rotary Vane Vacuum Pumps
Welch DryFast Diaphragm Pump 2044
DryFast Diaphragm Pump 2044 Welch DryFast™ PTFE Diaphragm Vacuum Pumps enable precise vacuum control for organic evaporations with exclusive Advanced Vapor Management (AVM). Oil-Free, portable, chemical resistant, dual head diaphragm design simplifies maintenance. Choose from seven dry PTFE vacuum pump models with flows up to 70 L / min and adjustable vacuum down to 2 Torr. Economical DryFastTM vacuum pumps are perfect for tough lab applications. Product Details: Chemical Resistant Oil-Free Tuneable Vacuum Suggested Applications: Concentrator - Gel Dryer Combination Rotary Evaporator Vacuum Concentrator Test Equipment General Attributes Free Air Displacement @ 60 Hz, cfm (L/min) 1.2 (35) Ultimate Pressure, torr 9 Motor Power, HP (kW) at 60 Hz 1/5 (150) Inlet (Exhaust) Connection Thread NPT M14 (1/8) Tubing Needed, I.D. in. (mm) 1/4 (7) Weight, lbs (kg) 21.25 (9.6) Shipping Height 13.8x6.8x8.8 (350x170x220) 115V Order Number 2044B-01
$2,635.00
Welch 2085
Welch 2085 (CSA/UL) Certified Corrosion Resistant Free Air Displacement of 195 l/min (6.9 cfm) Ultimate Vacuum Pressure 26" Hg (100 torr) Fitted Explosion Proof Motor (Class I, Groups C & D; Class II Groups F & G) with CSA/UL Mark Portable Welch corrosion-resistant diaphragm vacuum pumps are driven by explosion-proof motors rated for Class I Hazardous Locations(HazLoc). The aluminum pup head is PTFE coated and diaphragm is covered by a PTFE liner to separate chemical media from the diaphragm. The explosion proof motor is directly coupled to the diaphragm pumping module. Stainless steel tubing is used to connect pump heads together in one and two-stage configurations. The vacuum pump doesn’t come with an on/off switch, plug or cord, but must be conduit wired to the on/off explosion proof control panel. Always use a certified electrician for proper installation of vacuum pump with explosion proof motor to meet your local municipal codes. Contact your local Welch area sales manager for further information Model 2085 FAD, lpm (cfm 195 (6.9) Ultimate Pressure, Torr 100 Max. Vac., in. Hg 26 Head Material Coated PTFE Diaphragm liner PTFE Inlet/Outlet connection NW25 Motor Type Ex Proof Electrical requirement 115/230V 60Hz 1Ph Weight, lbs(kg) 54 (25.5) Dimensions, LxWxH 27 x 11.3 x 11.3
$6,164.00
Welch WOB-L System 2511
Welch WOB-L System 2511 ***Note: This item has a possible 1-2 week lead time depending on stock availability*** Product Details Use this easy system to collect waste into 1.2 Liter autoclaveable collection receiver. Includes vacuum measurement and regulation. Reservoirs are protected from overflow by float valve; inlet line hydrophobic filter further protects pump. Vacuum Pump is reliable WOB-L piston pump, perfect for aqueous vapors, buffer, and mild bleach solutions . Not for use with organic solvents / acids / bases. Model Number 2511 Applications Solution aspiration / collection; vacuum filtra Type Laboratory Vacuum Pump Free Air Displacement cfm (l/min.) @60Hz 0.39(11) Free Air Displacement m3/hr (l/min.) @50Hz 0.55(9.2) Ultimate Pressure 219(292) Maximum Vacuum 21.3 Max Pressure PSIG (pascal) 33(3.3 x 105) Motor Horsepower (watts) 1/30(25) Tubing Needed 3/16(5) Intake Thread NPT 3/16 in. Hose Overall Dimensions LxWxH in. (cm) 7.6x4.5x7.5 (19.4x11.4x19.1) Ship Weight 11.0(5) Shipping Dimensions LxWxH in. (cm) 11" x 7" x 7" (39x31x32)
$941.00
Welch WOB-L Pump 2522
Welch WOB-L Pump 2522 Product Details Economical Oil Free Adjustable Vacuum / Pressure Reliable WOB-L Piston pumps are perfect for many common laboratory vacuum applications. Features: Vacuum and Pressure - to 100 Torr (26"Hg). Includes Vacuum and Pressure Regulators and Gauges - simple to adjust and monitor vacuum level and delivery pressure. Inlet Water Trap - float ball rises to seal off pump from accidental ingestion of water. Muffler quiets pump and filters discharge air. For use with dry or aqueous vapor applications only. Specifications Model Number 2522 Application Filtration (1 to 2 funnels), Aspiration, Desiccation, SPE, Replace water aspirator, Vacuum Drying Type Laboratory Vacuum Pump Free Air Displacement cfm (l/min.) @60Hz 0.76(22) Free Air Displacement m3/hr (l/min.) @50Hz 1.1(18) Ultimate Pressure 100(133) Maximum Vacuum 26 Max Pressure PSIG (pascal) 100(106) Motor Horsepower (watts) 1/8(93) Adjustable Vac. / Gas Ballast Yes Tubing Needed 3/16(5) Intake Thread NPT 1/4 Overall Dimensions LxWxH in. (cm) 8.1x8.8x10 (20.6x22.4x25.4) Ship Weight 17(7.7) Shipping Carton Dimensions LxWxH in. (cm) 15.3x12.3x12.7 (39x31x32) Intake Catch Jar Yes Exhaust Catch Jar Yes Adjustable Vacuum Knob Adjustable Pressure Yes Vacuum Gauge Dial Pressure Gauge Dial
$655.00
Welch WOB-L Pump 2546
Welch WOB-L Pump 2546 Product Details Economical Oil Free Adjustable Vacuum / Pressure Reliable WOB-L Piston pumps are perfect for many common laboratory vacuum applications. Features: Vacuum and Pressure - to 60 Torr (27.6"Hg). Includes Vacuum and Pressure Regulators and Gauges - simple to adjust and monitor vacuum level and delivery pressure. Inlet Water Trap - float ball rises to seal off pump from accidental ingestion of water. Muffler quiets pump and filters discharge air. For use with dry or aqueous vapor applications only. Specifications Model Number 2546 Application Filtration (1 to 6 funnels), Aspiration, Desiccation, SPE, Replace water aspirator, Vacuum Drying Type Laboratory Vacuum Pump Free Air Displacement cfm (l/min.) @60Hz 1.6(45) Free Air Displacement m3/hr (l/min.) @50Hz 2.3(38) Ultimate Pressure 60(80) Maximum Vacuum 27.6 Max Pressure PSIG (pascal) 100(106) Motor Horsepower (watts) 1/4(190) Adjustable Vac. / Gas Ballast Yes Tubing Needed 3/16(5) Intake Thread NPT 1/4 Overall Dimensions LxWxH in. (cm) 10x7.5x9 (25.4x19.1x7.7) Ship Weight 17(7.7) Shipping Carton Dimensions LxWxH in. (cm) 15.3x12.3x12.7 (39x31x32) Intake Catch Jar Yes Exhaust Catch Jar Yes Adjustable Vacuum Knob Adjustable Pressure Yes Vacuum Gauge Dial Pressure Gauge Dial
$819.00 - $823.00
Welch WOB-L Pump 2581
Welch-L Pump 2581 ***Note: This item has a possible 1-2 week lead time depending on stock availability.*** Product Details Economical Oil Free Adjustable Vacuum Reliable WOB-L Piston pump is perfect for many common laboratory vacuum applications. Features: Vacuum to 5 Torr (29.8"Hg). Includes Vacuum Regulator and Gauge - simple to adjust and monitor vacuum level. Inlet Water Trap - float ball rises to seal off pump from accidental ingestion of water. Muffler quiets pump and filters discharge air. For use with dry or aqueous vapor applications only. Specifications Model 2581 Free Air Displacement @ 60 Hz, cfm (L/min) 3.5 (100) Ultimate Pressure, torr 5 Motor Power, HP (kW) at 60 Hz 1/3 (0.25) Inlet (Exhaust) Connection Thread NPT 3/8 Tubing Needed, I.D. in. (mm) 1/4 (7) Weight, lbs (kg) 24.5 (11.1) Dimensions, LxWxH, in (mm) 17x7.5x12 (430x420x190) 115V Order Number 2581B-50 / 2581B-24
$2,279.00 - $2,612.00
CRVpro30
Welch CRVpro30 Two-Stage Rotary Vane Pumps •Consumes up to 36% less oil than comparable pumps. •Runs 10°C cooler than comparable pumps. Slows corrosion. •Has a 40% larger oil capacity than comparable pumps. Dilutes aggressive chemicals. •Has a chemical resistant coating in the oil case and pump module. Protects non-moving parts. •Available in 115V/60Hz. •Free air displacement @60Hz: 22.1 cfm (627 L/min) •Ultimate pressure: 3x10-3 mbar (2x10-3 Torr). CRVpro vacuum pumps are two-stage direct-driven vacuum pumps. They are nine models of CRVpro available with free air displacement from 1.8 cfm to 52.5 cfm. Ultimate pressure to 2x10⁻³ torr. Three models of pumps with explosion proof motors, with free air displacements from 2.8 to 12.8 cfm, are available by clicking on the "Explosion Proof" tab below. The benefits of CRVpro pumps are: reduced risk of chemical attacks and oil breakdown by diluting chemical vapors with a larger oil chamber slowing down corrosion by cool running operation provides a measure of protection from sublimed chemical vapors with coating on pump module and oil case. These benefits lead to extended service interval. Depending on model, motor options include 1 Ph TEFC, 3 Ph TEFC, and 1 Ph ex proof motors. Welch vacuum pump oil is specifically formulated for the unique needs of vacuum pumps. Use of non-Welch vacuum pump oil voids any performance claims and product warranties. •In Duoseal belt driven rotary vane pumps, use Welch Duoseal or Welch Gold Oil •In CRVpro rotary vane pumps use Welch premium or Welch gold oil •In Chemstar belt driven rotary vane pumps use Welch gold oil CRVpro vacuum pumps can be used for freeze drying, vacuum ovens, concentrators, glove boxes, schlenk lines, HVAC/refrigeration service, coaters, backing diffusion pumps and turbo molecular pumps, short path, wiped film, metallurgy/vacuum furnaces, lamp manufacture, space simulation, degassing, vessel/chamber evacuation. CRVpro vacuum pumps prepared with perfluoropolyether (PFPE) for oxygen service are available. Contact your local Welch sales representative for details on PFPE prepared pumps and for selecting correct vacuum pump for your application. Weight 99 Ultimate Pressure 3 x10⁻³ Dimensions (mm) 683x384x389 Free Air Desplacement 22.1 (627)
$6,423.00
Welch 2163 6.1 Cfm Full Chemical-Resistant 8-Head Diaphragm Pump
Welch 2163 6.1 Cfm Full Chemical-Resistant 8-Head Diaphragm Pump The Welch 2163 is a high capacity full chemical-resistant, 8-head, oil-free dry diaphragm vacuum pump with all-aluminum contact surfaces and deep vacuum capability. Oil-Free, portable, full chemical-resistant, means less maintenance and no more frequent and costly oil change, or cross-contamination. Ai is now the official dealer of Welch vacuum pumps. These pumps are made in Germany with one year warranty and technical support from Welch Vacuum. Specifications Electrical requirements 110V or 220V, 50/60Hz single phase Pumping rate 7.8 cfm / 222 L/min Gasket material All-PTFE Ultimate vacuum level 6 torr / 8 mbar Maximum vacuum 29.9 in. Hg Inlet/Outlet 10mm hose barb Adjustable vac./gas ballast No Unit dimensions 21.25 x 9.25 x 12" (LxWxH) Package dimensions 28 x 16 x 20" (LxWxH) Shipping dimensions 40 x 48 x 25" (LxWxH) Package weight 90 Lbs Shipping weight 130 Lbs Compliance cUL
$4,169.00
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