Diaphragm Vacuum Pumps

BVV™ 1CFM PTFE Diaphragm Vacuum Pump BVV™ 1CFM PTFE Diaphragm Vacuum Pump is a great alternative to a rotary vane vacuum pump because it does not require oil and can run for hours on end without having to be serviced or worry about the pump overheating. This diaphragm pump has a unique design with a built on carrying handle and rubber suction cup feet to reduce noise output and vibration. This pump includes a vacuum gauge (installation required), silencer/air filter, silicone vacuum tubing, power cord and instruction manual. Please Refer to these charts for vacuum specifications at altitude and conversions: Vacuum at Altitude Chart Vacuum Conversion Chart Key Features: Oil-Free Operation Easy to Carry Handle Rubberized Suction Cup feet for reduced noise level and vibration Lightweight Screw on Silencer Built-in Vacuum Gauge Corrosion Resistant PTFE Diaphragms Specifications Free Air Displacement 1CFM / 30L/Min Voltage 120v / 60Hz Ultimate Vacuum -28InHg / >= 0.095Mpa Noise Level <60 DB Motor Power 160w Number of Heads 2 Diaphragm Material PTFE Weight 22LB Intake Connection 8mm Barb Fitting Warranty 2 Years Limited

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The BVV V series pumps are Ani-corrosion PTFE diaphragm vacuum pumps. The two head design operates as a two-stage pump to achieve a lower degree of vacuum. They are ideal for pumping corrosive gases and organic solvents. These pumps do not need any pump oil or other lubricants, which means less maintenance and smaller chance for cross contamination.   The BVV V-40 is ETL listed to be used in laboratories and comes with a 1 year manufacturer warranty on all non consumable pieces.   Model V-40 Power 110V 60Hz, 240 W Ultimate Vacuum 6 torr (8mbar) Maximum Operating Pressure 1 bar Maximum Flow 40 L/min Ambient Temperature 5 - 40°C Pump Head Material PTFE Composite Valve Material FFPM Noise <70db Dimensions 315x165x210mm Weight 10.4 kg For replacement diaphragms, click HERE

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DryFast Collegiate Diaphragm Pump 2014 ***Note: This item has a possible 1-2 week lead time depending on stock availability*** Product Details Chemical Resistant Oil-Free Tuneable Vacuum   Welch DryFastTM PTFE Diaphragm Vacuum Pumps enable precise vacuum control for organic evaporations with exclusive Advanced Vapor Management (AVM). Oil-Free, portable, chemical resistant, 1 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.     Model Number 2014 Applications Vacuum Filtration, SPE, Rotary Evaporations (volatile solvents <80oC B.P., volume <2 liters), pumping harsh vapors & gases, general laboratory vacuum Type Laboratory Vacuum Pump Free Air Displacement cfm (l/min.) @60Hz 1.2(35) Free Air Displacement m3/hr (l/min.) @50Hz 1.75(29) Ultimate Pressure 40(53) Maximum Vacuum 28.3 Motor Horsepower (watts) 1/5(150) Adjustable Vac. / Gas Ballast Yes Tubing Needed 1/4(7) Intake Thread NPT M14(1/8) Overall Dimensions LxWxH in. (cm) 12x7.0x8.3 (30.5x 17.8x21.1) Ship Weight 19(8.6) Shipping Carton Dimensions LxWxH in. (cm) 21x14x15 (52x35x37) Adjustable Vacuum Knob

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Welch BTpro40              (CSA) Certified      ***Note: This item has a possible lead time of 2-3 weeks depending on stock availability.***        Welch’s BTpro vacuum pump series has a flow and vacuum level to provide fast performance for your size of rotary evaporator, glass reactor, purge oven, or winterization filtration apparatus. These chemical duty PTFE diaphragm pumps are oil-free. The pumping action and deep vacuum comes from the movement of PTFE diaphragms within PTFE heads. All wetted services in the flow path are made of fluoroplastic making the BTpro pump highly chemically resistant. As a result, the BTpro vacuum pump series is near-zero maintenance. A cold trap placed in-line with BTpro pump is needed if terpenes are part of the flow path. The BTpro40 and BTpro70 models employ patented valve and diaphragm technology that generates a deep 15 Torr vacuum pressure with each PTFE head. In addition, both pump models have built-in tuneable vacuum to control evaporation rate. The tunable vacuum adjustment can also be used to stop accidental bumping/foaming. Model BTpro40 Free Air Displacement@60Hz,lpm(CFM) 40(1.4) Ultimate Vacuum Pressure, Torr 15 Maximum Vacuum, in. Hg 29.3 Horsepower, HP (watts) 1/5(150) Built-in adjustable vacuum Yes Gas Ballast - Head Material PTFE Diaphragm PTFE Inlet/outlet Connection 3/8” barb Agency (National Recognized Lab) CSA Weight, lbs (kg) 15.0(6.8) Overall DimensionsLxWxH in.(cm) 12x7x8.3(31x18x22) Shipping Weight, lbs(kg) 19(8.6) Shipping Carton DimensionsLxWxH in.(cm) 21x14x15(52x35x37)

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Welch BTpro70  ***Note: This item has a possible lead time of 2-3 weeks depending on stock availability.***   Welch’s BTpro vacuum pump series has a flow and vacuum level to provide fast performance for your size of rotary evaporator, glass reactor, purge oven, or winterization filtration apparatus. These chemical duty PTFE diaphragm pumps are oil-free. The pumping action and deep vacuum comes from the movement of PTFE diaphragms within PTFE heads. All wetted services in the flow path are made of fluoroplastic making the BTpro pump highly chemically resistant. As a result, the BTpro vacuum pump series is near-zero maintenance. A cold trap placed in-line with BTpro pump is needed if terpenes are part of the flow path. The BTpro40 and BTpro70 models employ patented valve and diaphragm technology that generates a deep 15 Torr vacuum pressure with each PTFE head. In addition, both pump models have built-in tuneable vacuum to control evaporation rate. The tunable vacuum adjustment can also be used to stop accidental bumping/foaming.       Model BTpro70 Free Air Displacement@60Hz,lpm(CFM) 70(2.5) Ultimate Vacuum Pressure, Torr 15 Maximum Vacuum, in. Hg 29.3 Horsepower, HP (watts) 1/5(150) Built-in adjustable vacuum Yes Gas Ballast - Head Material PTFE Diaphragm PTFE Inlet/outlet Connection 3/8” barb Agency (National Recognized Lab) CSA Weight, lbs (kg) 21.3(9.6) Overall Dimensions LxWxH in.(cm) 13.8x6.8x8.8 35x17x22 Shipping Weight, lbs(kg) 25 (11.3) Shipping Carton Dimensions LxWxH in.(cm) 21x14x15 (52x35x37)

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Welch High Capacity Diaphragm Pump 2052   High Capacity dry diaphragm vacuum pump. PTFE contact surfaces, deep vacuum at with high flow. PTFE PUMP 115V 60HZ 1.5 TORR 64 LPM   Free Air Displacement cfm (L min.) 2.3 Ult. Vac. Pressure, torr (mbar) 1.5 (2) Maximum Vacuum, in. Hg 29.9 Motor Horsepower - HP (wattS) 0.53 (390) Adjustable Vac J Gas Ballast No Tubing Nftftriftri. J.D. m. (mm) 1/4 (8) fntake (Exhaust) Thread NPT NW 16-1/4" MPT Weight Ibs. (kg) 40.3 (18.3) Overall Dimensions L x W x H in. (cm) 9 x 15 x 7 (22.8 x 38.1 x 17.8) Slip Weight, lbs. (kg) 49.8 (22.6) Snipping Carton Dimensions L x W x H in. (cm) 10.2 x 16.6 x 7.5 (26 x 42 x 19)

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ULVAC DA-40S 1.6 Cfm Oil-Free Diaphragm Pump (Please note: This item has a minimum 6 week Lead Time)        This Diaphragm Dry type pump creates vacuum by reciprocate movement of rubber diaphragms. The structure of this pump makes Oil-free environment and maintenance easy.  Different pumping speed and two/single stages are optional depending on your required pressure and pumping volume. Applications: Vacuum chucks, wafer and tip handling devices. Vacuum tweezers, medical appliances. Printing equipment. Automatic packing machines. Optical appliances.   Specifications Unit 50Hz - 60Hz Actual Pumping Speed L/min 40 - 46 Ultimate pressure Pa 19.9 x 10^3 Motor Single phase, 100V, 60W, 4P, Capacitor run Full load current A 1.6 Weight kg 7.2 Inlet, outlet pipe diameter mm O.D. dia.9 × I.D. dia.5 (Rc 1/4) Ambient temperature °C 7 – 40 Overall dimensions mm 128(W) × 242(L) × 178(H)

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Welch BTpro170 ***Note: This item has a possible lead time of 2-3 weeks depending on stock availability.*** Welch’s BTpro vacuum pump series has a flow and vacuum level to provide fast performance for your size of rotary evaporator, glass reactor, purge oven, or winterization filtration apparatus. These chemical duty PTFE diaphragm pumps are oil-free. The pumping action and deep vacuum comes from the movement of PTFE diaphragms within PTFE heads. All wetted services in the flow path are made of fluoroplastic making the BTpro pump highly chemically resistant. As a result, the BTpro vacuum pump series is near-zero maintenance. A cold trap placed in-line with BTpro pump is needed if terpenes are part of the flow path.   Model BTpro170 2163 Free Air Displacement@60Hz,lpm(CFM) 170 (6.0) 170 (6.0) Ultimate Vacuum Pressure, Torr 6 6 Maximum Vacuum, in. Hg 29.7 29.7 Horsepower, HP (watts) 0.6(440) 0.6(440) Built-in adjustable vacuum - - Gas Ballast Yes Yes Head Material PTFE Coated Al Diaphragm PTFE PTFE Inlet/outlet Connection NW16 flange NW16 flange Agency (National Recognized Lab) cUL cUL Weight, lbs (kg) 72.3 (32.8) 72.3 (32.8) Overall DimensionsLxWxH in.(cm) 21x11x12(53x28x31) 21x11x12(53x28x31) Shipping Weight, lbs(kg) 88.2 (40.1) 88.2 (40.1) Shipping Carton Dimensions LxWxH in.(cm) 23.6x15.8x16.1 60x40x41 23.6x15.8x16.1 60x40x41

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Welch 6.1 cfm Full Chemical-Resistant 8-Head Diaphragm Pump The Welch 6.1CFM Full Chemical-Resistant 8-Head Diaphragm Pump is the ideal choice for 50L Rotary Evaporators and large oven systems. This high capacity, full chemical resistant pump gives users the ability to vac down large capacity spaces quickly, efficiently, and cleanly without worrying about contamination of pump oil. The inner diaphragm is lined with PTFE making it highly chemical resistant and long lasting. It is one of the quietest and cleanest running vacuum pumps on the market. Key Features: Fully Chemical-Resistant Oil-less diaphragm style vacuum pump High capacity vacuum capability Specifications: Electrical Requirements: 110v 60Hz single phase Pumping Rate: 6.1cfm / 174L/min Gasket Material: All-PTFE Ultimate Vacuum level: 6 torr / 8 mbar Maximum Vacuum: 29.9 inHg Inlet / Outlet: KF16 Flange Adjustable vac. / gas ballast: No Unit dimensions (LxWxH in): 21x10x12 in Shipping dimensions (LxWxH in): 28x15x20 in Shipping weight (lbs): 90   Technical Data Free Air Displacement @ 60 Hz, cfm (L/min) 6.1 (173) Ultimate Pressure, torr 6 Motor Power, HP (kW) at 60 Hz Motor Power, HP (kW) at 60 Hz Inlet (Exhaust) Connection Thread NPT NW16 - 1/4" NPT Tubing Needed, I.D. in. (mm) Hose Connector Available Weight, lbs (kg) 72.3 (32.8) Dimensions, LxWxH, in (mm) 21x11x12 (530x280x310) 115V Order Number 2064B-01   ***Note: Purchase of this pump is subject to End User Verification. A certification form must be filled out before completion of purchase.***

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Welch High Capacity Diaphragm Pumps 2062 ***Note: This item has a possible 1-2 week lead time depending on stock availability*** High Capacity dry diaphragm vacuum pump. PTFE contact surfaces, deep vacuum at with high flow. PTFE Pump, 8 heads. 115V 60HZ 1.5 TORR 119 LPM   Specifications Includes 1/4" OD hose barb Common accessory, not included Vacuum Controller Pumping Speed 119 Lit/min. (4.2 CFM) Max. Vacuum 1.5 Torr (2 mbar) 29.9" Hg Tubing Needed 1/4" ID Inlet Connection UNIBARB Exhaust 1/4" OD Dimensions LxWxH inches 21x11x12 Weight 72 LBS Wiring 115V, 60 hz

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ULVAC DTC-41 230V 1.6 Cfm 2-Stage Chemical-Duty Diaphragm Pump TUV Manufactured and imported directly from Japan, ULVAC DTC series diaphragm pumps feature integral forced-air cooling. They have two-stage PTFE diaphragms that are ideal for pumping corrosive gases and organic solvents. These pumps are oil-free, portable, and chemical-resistant, which means less maintenance and no more frequent and costly oil change, or cross contamination. Ai is now the official dealer of ULVAC vacuum pumps. These pumps are made in Japan with one year warranty and technical support from ULVAC. Features: TUV certified to UL and CSA standards Only PTFE components are exposed to vacuum, ideal for pumping corrosive gases and organic solvents Integral forced-air cooling Very compact and portable Designed to back most hybrid turbo pumps   Applications: Rotary evaporator Evaporating system Vacuum concentrator Vacuum filtration Vacuum drying systems Medical/pharmaceutical equipments Centrifuge Laser-gas circulation     Free three feet 3/8" white premium food grade silicone vacuum tubing ($19.99 value) included.   Model ULVAC DTC-41 Part number 1042840 Electrical requirements 115V 60Hz or 230V 50/60Hz, single phase 0.13HP, 100 watts Full load current 1.1 amps Pumping rate 1.62 cfm (6 minutes to pump down a 0.9 cu ft oven) Gasket material All-PTFE Ultimate vacuum level 7.5 torr / 10 mbar Inlet/Outlet 3/8" hose barb Adjustable vac./gas ballast No Pump dimensions (LxWxH) 13 x 5.5 x 8.5 inches Shipping dimensions (LxWxH) 15 x 9 x 10 inches Pump weight 23 Lb Shipping weight 26 Lb Noise 53 dB(A) Working environment 32°F to 104°F (0°C to 40°C) Compliance TUV certified to UL and CSA standards

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ULVAC DTC-41 110V 1.6 Cfm 2-Stage Chemical-Duty Diaphragm Pump TUV   Manufactured and imported directly from Japan, ULVAC DTC series diaphragm pumps feature integral forced-air cooling. They have two-stage PTFE diaphragms that are ideal for pumping corrosive gases and organic solvents. These pumps are oil-free, portable, and chemical-resistant, which means less maintenance and no more frequent and costly oil change, or cross contamination. Ai is now the official dealer of ULVAC vacuum pumps. These pumps are made in Japan with one year warranty and technical support from ULVAC.   Features: TUV certified to UL and CSA standards Only PTFE components are exposed to vacuum, ideal for pumping corrosive gases and organic solvents Integral forced-air cooling Very compact and portable Designed to back most hybrid turbo pumps   Applications: Rotary evaporator Evaporating system Vacuum concentrator Vacuum filtration Vacuum drying systems Medical/pharmaceutical equipments Centrifuge Laser-gas circulation   Specifications    Model  ULVAC DTC-41  Part number  1042840  Electrical requirements  115V 60Hz or 230V 50/60Hz, single phase 0.13HP, 100 watts  Full load current  1.1 amps  Pumping rate  1.62 cfm (6 minutes to pump down a 0.9 cu ft oven)  Gasket material  All-PTFE  Ultimate vacuum level  7.5 torr / 10 mbar  Inlet/Outlet  3/8" hose barb  Adjustable vac./gas ballast  No  Pump dimensions (LxWxH)  13 x 5.5 x 8.5 inches  Shipping dimensions (LxWxH)  15 x 9 x 10 inches  Pump weight  23 Lb  Shipping weight  26 Lb  Noise  53 dB(A)  Working environment  32°F to 104°F (0°C to 40°C)  Compliance  TUV certified to UL and CSA standards  

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ULVAC DA-241 9.2 Cfm Oil-Free Diaphragm Pump Overview Manufactured and imported directly from Japan, ULVAC DA series diaphragm pumps creates vacuum by reciprocate movement of rubber diaphragms. Various pumping speed and two/single stages are selectable depends on your required pressure and pumping volume. These pumps are oil-free, which means less maintenance and no more frequent and costly oil change, or cross contamination. Ai is now the official dealer of ULVAC vacuum pumps. These pumps are made in Japan with one year warranty and technical support from ULVAC. Applications Alcohol evaporation Vacuum chucks, wafer and tip handling devices Vacuum tweezers, medical appliances Printing equipment Automatic packing machines Optical appliances Semiconductor industry Free three feet 3/8" white premium food grade silicone vacuum tubing ($19.99 value) included. Specifications   Model  ULVAC DA-241  Electrical requirements  110V 50/60Hz or 220V 50/60Hz single phase, 400 watts  Full load current  6.0 amps  Pumping rate  9.2 cfm  Ultimate vacuum level  120 torr  Inlet/Outlet  5/8" hose barb  Adjustable vac./gas ballast  No  Unit/shipping dimensions (LxWxH)  8 x 16 x 11" / 18/11/14.5"  Unit/shipping weight  58 Lb / 63 Lb  Working environment  32°F to 104°F (0°C to 40°C)  Noise level  70 dBA at near Atmospheric pressure 65 dBA at ultimate pressure  Certification  CE, TUV  

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ULVAC UDP-6 6 Cfm Full Chemical-Resistant 2-Head Diaphragm Pump Overview Ai exclusive, compact, lightweight, manufactured and imported directly from Japan, ULVAC UDP-6 is a high capacity full chemical-resistant 2-head pump that creates deep vacuum by reciprocate movement of rubber diaphragms. These pumps are oil-free, which means less maintenance and no more frequent and costly oil change, or cross contamination. Applications TUV certified to UL and CSA standards Moisture & solvent evaporation Vacuum chucks, wafer and tip handling devices Vacuum tweezers, medical appliances Printing equipment Automatic packing machines Optical appliances Semiconductor industry   Specifications   Model  ULVAC UDP-6 (DA-170DA/B)  Electrical requirements  110V 50/60Hz or 220V 50/60Hz single phase 400 watts, 5.6 amp rated current  Pumping rate  6 cfm  Ultimate vacuum level  6 torr  Inlet/Outlet  KF25 flange  Adjustable vac./gas ballast  No  Unit/shipping dimensions (LxWxH)  16 x 7 x 13" / 18 x 11 x 14.5"  Noise level  68 dBA at Atmosphere pressure 62 dBA at ultimate pressure  Unit/shipping weight  58 Lb / 63 Lb  Working environment  32°F to 104°F (0°C to 40°C)  Compliance  TUV certified to UL and CSA standards

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Welch ChemStar 5.3 cfm PTFE Oil-Free Deep Vacuum Diaphragm Pump   With the new ChemStar Dry, you get the advantages of two combined technologies: Roots blower and diaphragm vacuum pump. The result is an oil-free, software- driven vacuum system, ready to work on your tough chemical applications – clean, fast, and thorough. ChemStar Dry pumps quickly down (9 m³/h) to the working range for most evaporative operations (2.0 to 0.1 mbar) with an ultimate pressure of 10-2 mbar. The innovative electronically controlled vapour load optimises the pumping speed control. You can even pump corrosive vapours, since all wetted parts of the system are coated with PTFE and other proprietary coatings so they are chemical resistant. The integrated self-cleaning function also contributes to the system’s long lifetime and enables repeatable results. Take advantage of its state-of-the-art technology for optimal operating conditions and results. ChemStar Dry is suitable for all applications where high gas flow and deep vacuum are needed. Advantages: Oil-Free: no oil back-streaming, no oil maintenance/disposal, cleaner work place, cleaner samples, less maintenance Plug and Play: patented software control, auto speed control from atm to 0.07 mbar, self-cleaning function, protection from surges Low vacuum mostly without cold trap: no dry ice or trap apparatus needed, less maintenance, lower cost of ownership, extra bench space Chemical Resistant: pumps corrosive vapour/gases, TFE and proprietary coatings   SKU 2070B-01 Max. pumping speed at 50 Hz in m³/h (l/min) 8.4 (140) Max pumping speed at 60 Hz in m³/h (l/min) 10.1 (168) Ultimate pressure in mbar (Torr) without gas ballast 7x10-2 Wired for 230V, 50/60Hz Intake connection DN 25 KF Exhaust connection DN 25 KF Sound level (dB) 57 Dimensions (W/D/H) in mm 460/220/470 Weight kg (lbs) 23 (50.7)

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Welch 2090 Chemical Duty Diaphragm Pumps with Explosion Proof Motor (CSA/UL)     Corrosion- resistant Flow from 4.5 to 6.9 cfm Maximum vacuum to 29 in. Hg(25 Torr) Fitted with Class I, Groups C&D explosion proof motor(CSA/UL) 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 2090 FAD, lpm (cfm 127 (4.5) Ultimate Pressure, Torr 25 Max. Vac., in. Hg 29 Head Material Coated PTFE Diaphragm liner PTFE Inlet/Outlet connection NW25 Motor Type Ex Proof1 Electrical requirement 115/230V 60Hz 1Ph Weight, lbs(kg) 54 (25.5) Dimensions, LxWxH 24.6 x 11.1 x 11.3

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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

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***Note: This item has a possible 1-2 week lead time depending on stock availability*** The Welch .9cfm DryFast 2 Head Diaphragm vacuum pump is an ideal pump for 2L and 5L rotary evaporators and vacuum assited filtration. With built in vacuum control via Advanced Vapor Management (AVM), this pump is highly chemical resistance giving you excellent lifespan and vacuum control. Oil-Free, portable, and chemical resistance, this 2 head diaphragm design simplifies pump mantienance. Econimcal and long lasting, these pumps are perfect for any tough lab application. Key Features: Chemical Resistant Oil-Free Tuneable vacuum Specifications: Applications: Rotary Evaporation/Distillation (medium volatility solvents <110oC B.P., volume ~ 1 liter), Vacuum ovens - small, pumping harsh vapors & gases Type: Diaphragm vacuum pump Free Air Displacement cfm (l/min.) @60Hz: 0.9(25) Ultimate Pressure: 9(12) Maximum Vacuum: 29.6 Motor Horsepower (watts): 1/5(150) Adjustable Vac. / Gas Ballast: Yes Tubing Needed: 1/4(7) Intake Thread: M14(1/8) Overall Dimensions LxWxH in. (cm): 13.8x6.8x8.8 (35.2x7.2x22.3) Ship weight: 25 Shipping Carton Dimensions LxWxH in. (cm): 21x14x15 (52x35x37) Adjustable vacuum: knob style

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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)

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Welch 2019 Diaphragm Pump - vacuum filtration ***Note: This item has a possible 1-2 week lead time depending on stock availability*** Product Details PTFE Contact Surfaces Light and Portable  Economical Model 2019 diaphragm vacuum pump is durable and chemical resistant. Use Model 2019 for vacuum filtration, desiccation, degassing, and other mid-range vacuum applications. Recommended for operations utilizing organic / aqueous solvents and or light acid / base (e.g. acetic acid) solutions. Ideal for single funnel vacuum filtrations, SPE manifolds, or up to 6 holder manifold filtrations.     Specifications Free Air Displacement, CFM (l/min) 1.3 (37) Ultimate Vacuum, torr (mbar) 150 (200) Max. Vacuum, in Hg 24 Tubing Needed, I.D. in. (mm) 1/4 (7) Weight, lbs 10.2 Overall Dimensions 8.8 x 5 x 8.8 MODEL 2019B-01 / 2019C‐02

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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

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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

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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

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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

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Welch DryFast Ultra Diaphragm Pump 2042 This item may carry up to a 5 day lead time. Product Details Chemical Resistant Oil-Free Tuneable Vacuum Welch DryFastTM PTFE Diaphragm Vacuum Pumps enable precise vacuum control for organic evaporations with exclusive Advanced Vapor Management (AVM). Oil-Free, portable, chemical resistant, 2 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.     Specifications Model Number 2042 Application Rotary Evaporation/Distillation (lowvolatility solvents <160oC B.P., ~ 2 Liter), Centrifugal Concentrators, Vacuum ovens (mid- size), pumping harsh vapors & gases Type Laboratory Vacuum Pump Free Air Displacement cfm (l/min.) @60Hz 1.2(35) Free Air Displacement m3/hr (l/min.) @50Hz 1.75(29) Ultimate Pressure 2(2.7) Maximum Vacuum 29.85 Motor Horsepower (watts) 1/5(150) Adjustable Vac. / Gas Ballast Yes Tubing Needed 1/4(7) Intake Thread NPT M14(1/8) Overall Dimensions LxWxH in. (cm) 13.8x6.8x8.8(35.2x7.2x22.3) Ship Weight 25(11.3) Shipping Carton Dimensions LxWxH in. (cm) 21x14x15 (52x35x37) Adjustable Vacuum Knob

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