Welch GEM® Pumping and Trapping Fluid is a specially formulated paraffin based hydrocarbon oil for use in the GELMASTER™ gel-drying system. The blue color of the trapping fluid makes it easy to distinguish from the trapped condensate when draining the system. The trapping fluid can be used…

1169A95: Inlet Separator Intake separator separates liquid phase aerosols from gas stream, reducing chemical contaminants in pump oil. 1169A97: Outlet Oil Mist Separator Outlet oil separator removes oil particles from exhaust stream, minimizing oil loss to atmosphere. 1169A98:…

The Welch pressure regulator kithas specially formulated design and is a critical item to have in chemical laboratories to enhance the performance of various experiments and analysis.

ChemStar pumps are an enhanced DuoSeal platform. The oil case features a PTFE lining to minimize contamination. All ChemStar oil sealed pumps come standard with NW connections and an inert nitrogen gas purge.

Low rotation speed for longer service life Vital parts corrosion resistant Large oil reservoir dilutes contaminants ChemStar belt-driven Vacuum Pump is designed to tolerate harsh chemical contamination. Vital pump parts are corrosion resistant. The large oil reservoir with PTFE…

Famous Durability Deep Vacuum to 10-4 torr Low RPM for cooler operation Address a wide variety of laboratory vacuum needs with these rugged oil-seal pumps. Use DuoSeal vacuum pumps for Schlenk drying manifolds, freeze drying, vacuum ovens, glove boxes, degassing, concentrations,…

Powerful vacuum for low temperature processing Economical, oil-free, ecologically sound Excellent solvent / acid resistance Use these durable dry diaphragm pumps to provide high flow, deep vacuum for your application. Welch Model 2052 pumps resist corrosive and solvent fumes to…

The Welch belt guard and base kit is made from sturdy plastic material that prevents any wear and tear. This kit is compatible to use with 1374/1397 vacuum pumps.

Filters trap exhaust oil mist and reduce pump noise. They are supplied with housing and replaceable filter.

ATEX motor Chemical Duty Dry Diaphragm Vacuum Pump. 72 LPM x 1.5 torr, 115v/60hz, ATEX.

ChemStar Belt-driven vacuum pump is designed to tolerate harsh chemical contamination. Vital pump parts are corrosion resistant. The large oil reservoir with PTFE surfaces dilutes contamination and the low pump rotational speed lessens friction to reduce operating temperature and chemical effects.…

Affordable Model 2019 vacuum pump is durable and chemcial resistant. Use Model 2019 for vacuum filtration, desiccation, degassing, and other mid-range vacuum applications. Free air flow 37L/min; Maximum vacuum 24" Hg. Pump can also be used to pressurize up to 18 PSIG. Comes standard with…

Welch Belt-drive vacuum pumps are known for their ruggedness world-wide in the most demanding applications.

Product Details Corrosion Resistant Fitted Explosion Proof Motor (Class I, Groups C & D; Class II Groups F & G) with CSA/UL Mark Portable Suggested Applications Vacuum Filtration Vacuum Oven Welch corrosion-resistant diaphragm pumps are driven by…

The Welch vane kithas specially formulated design and is a critical item to have in chemical laboratories to enhance the performance of various experiments and analysis.

Welch Standard Duty* vacuum pumps use dry, oil-free WOB-L® Piston technology to deliver industry-leading, strong pumping dynamics that support filtration, drying, aspiration, parts forming, and other rough vacuum applications. There are 17 models available, with free air displacement from 0.4 cfm…

Oil free 115 or 230V versions Autoclavable receiver Standard oil-free station is an economical portable solution for aspirating or filtering. Unit will shut off automatically when 1.2 L collection receiver is full. All wetted parts are treated for corrosion protection from moisture.…

Welch Belt-drive vacuum pumps are known for their ruggedness world-wide in the most demanding applications.

Welch® Self-cleaning PTFE vacuum systems quiet and rugged vacuum pumps that provide work horse duty for years between service intervals. The self cleaning feature keeps the membranes and valves clean and dry, allowing the pump to achieve excellent base pressures and return to base pressure rapidly.…

The Welch hose barb is made from strong and sturdy metal that offers good corrosion resistance thus enhancing the durability. This fitting provides a secure connection forming a leak-proof seal.

Advanced vacuum pressure gauge measures vacuum pressure in any system, with a range from 1-1,999 millitorr. This programmable instrument can measure leak rates, and vary units of pressure measurment to torr, millitorr, millibar, kPa, and many more. Runs on AA batteries but can run on AC power with…

The Welch exhaust silencer has a sturdy and impact-resistant construction for added durability. It is compatible to use with 2561 pumps in jobsites and construction sites.

WOB-L® 2534 dry piston pumps are a reliable partners for physical applications, notably with aqueous solutions. Being a vacuum pump and compressor, they can be used for a wide variety of applications such as filtration, gas sampling, vacuum drying, desiccation and automation technology. The…

DuoSeal™ Vacuum Pump Oil. Tested to high vacuum levels, this oil meets rigid requirements for vapor pressure, stability and viscosity. 5-gallon container.

The Welch NW 16 acid trap adapter kit is designed to use as an accessory to vacuum pumps and is a must-have tool to have in any jobsite and construction environments.

The Welch inlet connector is an ideal fitting accessory to have in chemical laboratories to obtain a leak-proof seal. This connector is compatible to use with 8907, 8912, 8917, 8920, 8925 pumps.

Rugged oil seal pumps for a wide variety of vacuum needs, including Schlenk drying lines, freeze drying, degassing, concentrations, distillations, and more. Pull drive enables low rpm operation by reducing friction, oil temperature, and oil degradation. Its large oil reservoir minimizes…

The Welch NW 16 - 7/16 Inch hose adapter is suitable for use with vacuum pump. It ensures smooth functioning and long lasting usage. This accessory is made of sturdy aluminum material which offers enhanced durability.

Exhaust oil recyclers are recommended for vacuum systems with continuous pressure of 1 torr (1 mm Hg) or higher. 1 At these pressures, conventional exhaust filters quickly saturate. The Mist Eliminator System continuously separates oil mist from the vacuum pump exhaust and actively returns the oil…

MP models use aluminum pump heads suitable for pumping non-reactive gases/vapors such as air, noble gases and water vapor. PTFE diaphragms are used because they offer longer lifetime than conventional elastomer diaphragms. The diaphragms consist of a PTFE membrane sandwiched to a strong non-wetted backing.

The Welch NW 25 female pipe adapter with a 1/2 Inch NPT connection is made from strong stainless steel material that offers added strength. This adapter is compatible to use with hose barbs.

Welch GEM® Pumping and Trapping Fluid is a specially formulated paraffin based hydrocarbon oil for use in the GELMASTER™ gel-drying system. The blue color of the trapping fluid makes it easy to distinguish from the trapped condensate when draining the system. The trapping fluid can be used…