Welch
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Economical Oil Free Adjustable Vacuum / Pressure Use these affordable oil-free pumps to provide convenient vacuum throughout the lab. Welch WOB-L piston pumps provide adjustable vacuum for filtration, SPE, vacuum ovens, and more. These pumps are an efficient alternative to water…
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All Pumps are constructed with PTFE heads, perfluoroelastomer valves, and a PTFE coated, molded diaphragm. Includes intake/exhaust hose barbs. DRYFAST® and DRYFAST® ULTRA models include tunable vacuum control. General Purpose pumps include exhaust silencer.
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Welch Blank Off Flange
WelchWelch Blank off flange made with stainless steel. To close off unused ports.
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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…
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DUOSEAL pump oil with low vapor pressure, ideal viscosity is recommended for use with DUOSEAL or any other belt-driven vacuum pump. No additives or inhibitors. Exhaust filters trap oil mist and reduce noise. Replaceable elements reduce maintenance costs.
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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…
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The Welch rotary vane pump has specially formulated design and is a critical item to have in chemical laboratories to enhance the performance of various experiments and analysis.
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Thermocouple Vacuum Gage
WelchPortable, lightweight thermocouple vacuum gauge with recorder output (0-10VDC) for monitoring vacuum pressure. Single station model 1515 has a range of 0-5000 mtorr. Supplied with one permanently attached probe cable and one gauge tube.
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BTPro40 Botanicals Chemical Duty Dry Vacuum Pumps
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CRVpro8-CHEM
WelchThe Welch CRVpro8 Chem is effective for freeze drying or concentration of samples using a lyophilizer, including harsh chemicals such as TFA, Acetonitrile, HBr and others. These chemicals quickly attack the vacuum pump oil of unprotected vacuum pumps. CRVpro8 Chem is engineered to better combat the…
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The Welch two-head service kit is the perfect kit to have in jobsites as well as in construction sites for the urgent repair, maintenance and monitoring of vacuum pumps. It contains all the necessary tools that are required to keep the pumps running.
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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.
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Welch Seal Service Kit
WelchThe Welch seal service kit is an ideal accessory to have in chemical laboratories and research facilities. This kit compatible to use with 2561 two-head pumps.
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The Welch vacuum regulator kit is ideal for controlling, stabilizing and monitoring of vacuum devices in commercial as well as residential environments.
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The Welch NW 25 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.
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Welch Interconnect Kit
WelchThe Welch small interconnect kit includes all the necessary repair tools and accessories that are required to keep the ovens in pristine working conditions.
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The Welch hydrophobic 0.8 micron inline filter removes unwanted filters and harmful contaminants thus maintaining fluid purity in instrumentation systems.
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Hose Adapters
WelchAluminum Hose Adapter sits on NW16 Centering Ring Assembly, inlet/exhaust flange, with hinged clamp, to present a 3/8" hose barb to accept vacuum hose with 3/8" ID or if using hose clamps, 1/2" and 5/8" ID hose also
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The Welch 3/4 Inch mechanical seal kit is made from strong neoprene that ensures a leak-proof seal. This kit is compatible to use with 1402, 1376, 1380 pumps.
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Welch Tubing Service Kit
WelchThe Welch tubing service kit is easy to use and is mainly used for the purposes of automotive, HVAC and electrical jobs. This kit is compatible to use with 2025, 2026, 2027, 2028 vacuum pumps.
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Diaphragm pumps for chemical applications - type MPC - are chemically compatible and resistant to aggressive solvents and acid vapors which are common in laboratories. The diaphragms are made out of PTFE. The pump and connection heads are carbon fiber reinforced. Their electrical conductivity…
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Welch Tubing Service Kit
WelchThe Welch tubing service kit is easy to use and is mainly used for the purposes of automotive, HVAC and electrical jobs. This kit is designed to use with 2025, 2026, 2027, 2028 vacuum pumps.
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The Welch diaphragm pump two-head service kit is a perfect accessory to have in any chemical laboratories. This kit is compatible to use with 301Z/601E/MPC301Z 2-head diaphragm pumps.
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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,…
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Three features to extend service intervals: Cool running slows rate of corrosion and slows down rates of oil consumption Large oil capacity minimizes the rates of oil breakdown and reduces chemical attack within pump Internal surface protection on pump internals and PTFE coating on…
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Welch WOB-L pumps are oil-free for reduced maintenance. These WOB-L piston pumps have a high water vapor tolerance.
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Welch Spare Eeceiver Kit
WelchThe Welch spare receiver kit is ideal to use for the process of aspiration and filtration. Kit contains 6 Feet tubing, 1.2 Liter autoclavable jar and two hydrophobic filters.
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Eliminate cold-trapping, messy oil maintenance, and the threat of oil contamination to your sample. Handle even high chemical vapor loads for simple, efficient deep vacuum. ChemStar Dry excels where no dry vacuum pump has before – the first practical alternative to oil-seal rotary vane pumps.…
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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…
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DuoSeal, 230V 60Hz 1Ph
WelchHigh contamination tolerance Ultimate vacuum <0.001 Torr Low RPM for long service life DuoSeal Vacuum Pumps are known for their ruggedness world-wide. These pumps have large oil reservoirs to dilute contaminants. Low pump rpm to reduces friction and wear while minimizing reservoir…
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Durable, chemical resistant PTFE construction Easy to operate and maintain Use Welch ® DryFast ® diaphragm vacuum pumps for tough applications requiring chemical resistance. DryFast’s Advanced Vapor Management controls vacuum for precise distillations using handy…
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The Welch cut length vacuum hose measuring 3/16 Inch x 13/16 Inch x 5 Feet, is suitable for use with vacuum pump. It ensures smooth functioning and long lasting usage. This accessory is made of sturdy material which offers enhanced durability.