Our Products

Rotary Evaporator

Laboratory equipment

Jacketed Reactor

Contact Us

We Cherish All Interactions

Gas Ballasting - What Is It & Why Is It Important? – Provac

May 17, 2019 · Properly using a gas ballast valve as found on a mechanical oil sealed vacuum pump has been considered by some to be an arcane art and practiced blindly much of the time. Actually, gas ballasting is a very simple operation and when properly applied can keep vacuum pumps in optimal conditions even when used in wet processes that can potentially contaminate the oil with condensation. When vacuum .

Welch CRVpro Direct Drive Rotary Vane Vacuum Pump CRVpro6 .

The CRVpro family includes all the features you'd expect in a direct drive rotary vane pump: gas ballast, forced oil lubrication, anti-suckback mechanism and thermal overload protection. Suitable applications include freeze drying, degassing, vacuum ovens and concentrators. 3061-01 is wired for North American 115V, 60Hz operation.

Direct Drive Two-Stage Rotary Vane Vacuum Pumps

They are sometimes also referred to simply as rotary vacuum pump or vane vacuum pump. Welch Vacuum's laboratory two-stage rotary vane pumps are always an option when an ultimate pressure level from 0.5 mbar to 1x10-4 mbar is required. Depending on the pump model the pumping speed range lies between 1.8 m³/h and 60 m³/h.

Shop for Welch Vacuum Pumps on Zoro.com

Vacuum Pump, HP 1, Displacement 17.7 cfm, Ultimate Pressure Torr 1 x 10-4, Intake Male SAE Flare 1-1/2 (F)NPT, NPT Inlet 1-3/4 In., Voltage 115/230, Amps AC 13.4/6/7, Overall Length 26 In., Overall Height 18-3/4 In., Overall Width 13-3/4 In., 60 Hz, 1 Phase, Tube Inside Dia. 1-5/8 In., Weight 205 lb., Oil Capacity 40 oz., RPM 525, Finish Blue/Gray, Ballast Gas, Valve Type Gas Ballast, That .

Vacuum - Welch 1402 Duoseal Vacuum Pump

Auction consisting of: 1- Welch 1402 Duoseal Vacuum Pump w/ GE 1/2hp. 120VAC, C1153 Motor. Used Condition. This auction is for a Welch 1402 Duoseal Vacuum Pump that is powered by a GE 1/2hp. 120VAC, C1153( No. Motor. The Pump and Motor powers up and the vacuum draw is'strong' to the touch with a hand held to the inlet.

Rietschle 513258 DISC,FILTER,GAS BALLAST for VC 100,VC 150 .

Welch Vacuum Pump Repair Kits. Welch 1373 Repair Kits and Parts; Welch 1399 Repair Kits and Parts; Welch 1400 Repair Kits and Parts; Welch 1402 Chemstar Parts; . Rietschle 513258 DISC,FILTER,GAS BALLAST for VC 100,VC 150. Price: 13.30. .

Oil Sealed Rotary Pumps Understanding Gas Ballast

Gas Ballast • By opening the Gas ballast valve on the rotary pump: 1. A small amount of air flows into the compression portion of the pump cycle. 2. This additional air mixes with the gas/vapor being compressed. 3. The gas/vapor mixture is now greatly diluted. There is more % of dry gas than % of vapors. 4. There is now less tendency of .

Rotary Vane Vacuum Pumps at Thomas Scientific

Rotary Vane Vacuum Pump, 195 liters/minute displacement at 60 Hz. 1.3 x 10-4 mBar partial pressure. Direct-drive, two-stage, oil-sealed, sliding-vane. Includes on/off switch, inlet and outlet ports, mode selector (High Vacuum and High Throughput), gas-ballast control (Closed, Low Flow and High Flow).

Vacuum Pumps - Fisher Scientific

1 Two-stage rotary vane vacuum pump complete with anti-suction back valve, gas ballast valve, oil charging, centering ring, clamping ring and motor overload protection 2 Two-stage rotary vane vacuum pump with oil charging, clamping ring, centering ring, motor protection For accessories see page 6.

OWNER'S MANUAL FOR DUOSEAL® VACUUM PUMPS .

DUOSEAL® VACUUM PUMPS MODELS: 1400, 1405, 1402, 1376, 1397, 1374, 1399, 1380, 1392 Contents: Installation Operation . required to communicate with your dealer or with Welch Vacuum be sure to include your order numbers for . when the gas ballast is open. Awareness of the possibilities will save time in setting up a system. Best performance .

Welch™ MP 601 T Vacuum Pump Width: 390mm Welch™ MP .

Use these pumps for standard duty applications. Welch Ilmvac™ MP 601 T Vacuum Pumps have been developed specifically to meet the requirement for oil-free vacuum generation.

Shop for Welch Filter on Zoro.com

Vacuum Pump, HP 1, Displacement 17.7 cfm, Ultimate Pressure Torr 1 x 10-4, Intake Male SAE Flare 1-1/2 (F)NPT, NPT Inlet 1-3/4 In., Voltage 115/230, Amps AC 13.4/6/7, Overall Length 26 In., Overall Height 18-3/4 In., Overall Width 13-3/4 In., 60 Hz, 1 Phase, Tube Inside Dia. 1-5/8 In., Weight 205 lb., Oil Capacity 40 oz., RPM 525, Finish Blue/Gray, Ballast Gas, Valve Type Gas Ballast, That .

Fully Refurbished Welch 1402 DUOSEAL Rotary Vane Vacuum .

Welch 1402 DUOSEAL Rotary Vane Vacuum Pump, Gas Ballast On Side, 115/230V, 60 Hz, Single Phase. The Welch DOUSEAL two-stage pumps are designed to be most efficient when operated at or near their ultimate blankoff pressure. The pump is designed to remove air from a vacuum system at atmospheric pressure to a deep vacuum.

PUMP, CHEMSTAR, 1402N, PUMP ONLY - Vacuum Science Is Our .

Welch Rotary Vane Vacuum Pumps; SW1402N. PUMP, CHEMSTAR, 1402N, PUMP ONLY. Unit Price: P.O.R. . Click here to view a list of remanufactured vacuum pumps available from The KJLC's Remanufactured Vacuum Pump Division. . Partial Without Gas Ballast 1.30 x 10-4 hPA 1.30 x 10-4 mbar 1.30 x 10-2 Pa 1.00 x 10-4 Torr. Cooling Method(s) Method

Sargent-Welch Pump Maintenance, Comprehensive Version

Gurgling and bubbling noises often indicate a leak (or the gas ballast is on). A sound something like marbles in a coffee can typically precedes motor bearing failure. Slapping noise means sticking vanes. Note any noises that aren't typical. A good Welch pump running at low gas loads is almost silent.

Kurt J. Lesker Company | Welch® Standard and Chemstar .

Welch: Belt-Drive Standard Vane Pumps The low pump speed and belt drive combine to reduce operating wear and temperature, thereby reducing maintenance and oil vapor backstreaming. Use these pumps for all general purpose roughing and backing applications that demand longevity.

Vacuum - Duoseal Vacuum Pump

Welch DuoSeal 1400 Belt-Drive Vacuum Pump with Emerson S55NXMPF-6788 1/3HP Motor Vacuum Pump Specifications: Free Air Displacement: CFM: 0.9* L/min: 25 Gas Ballast: Yes Pump RPM: 580 Intake. Nipple Thread: 3/4-20 Exhaust.

Welch® CRVpro™ Direct Drive Rotary Vane Vacuum Pumps .

Extend Service Intervals through cooler running, larger oil capacity, and internal surface protection.Create a strong vacuum with these one and two-stage high vacuum pumps. Operating under quiet conditions, these high-powered vacuum pumps are designed to not disturb workers. The devices can be used in various applications such as air or gas sampling, pressure vacuum filtration, precious metal .

Rotary Vane Pump at Thomas Scientific

Rotary Vane Vacuum Pump, 195 liters/minute displacement at 60 Hz. 1.3 x 10-4 mBar partial pressure. Direct-drive, two-stage, oil-sealed, sliding-vane. Includes on/off switch, inlet and outlet ports, mode selector (High Vacuum and High Throughput), gas-ballast control (Closed, Low Flow and High Flow).

Welch 1402 DuoSeal Belt Drive Pump | ANDbio

Welch 1402 DuoSeal Belt Drive Pump Manufacture Specification Applications Vacuum Ovens, Glove Boxes, General Laboratory Vacuum Type Belt-Drive Vacuum Pump Free Air Displacement cfm (l/min.) @60Hz 5.6(160) Ultimate Pressure 1 x 10-4(0.00013) Pump RPM 525 Oil Capacity 2.25(2.1) Motor Horsepower (watts) 1/2(370) Adjustable Vac. / Gas Ballast Yes Tubing Needed 13/16(21) Intake .

Welch Vacuum Pump - The Lab World Group

The Welch Vacuum Pump Model 2546B-01 B provides reliable oil free operation, with adjustable vacuum and pressure. This Vacuum pump is an ideal choice for applications requiring aspiration, desiccation, SPE, replace water aspiration, vacuum filtration (1-6 funnels), and vacuum drying. The WOB-L piston pump has an ultimate pressure of 60 Torr, and vacuum of 27.6"Hg, with a 1/4 .

Welch® CRVpro Direct Drive Rotary Vane Vacuum Pumps .

The CRVpro family includes all the features you'd expect in a direct drive rotary vane pump: gas ballast, forced oil lubrication, anti-suckback mechanism and thermal overload protection. Suitable applications include freeze drying, degassing, vacuum ovens and concentrators.

Welch Vacuum : Manual

Repair Kit 2047K-01 (For Model: 2026, 2027 & 2028) This kit provides enough parts to service one side/head of this vacuum pump. Page 28. Section 9: WARRANTY IMPORTANT Please Read Carefully Before Operating This Welch® Vacuum Pump UNPACKING Inspect the pump carefully. If any damage has occurred, immediately file claim with the carrier immediately.

Rietschle 513258 DISC,FILTER,GAS BALLAST for VC 100,VC 150 .

Welch Vacuum Pump Repair Kits. Welch 1373 Repair Kits and Parts; Welch 1399 Repair Kits and Parts; Welch 1400 Repair Kits and Parts; Welch 1402 Chemstar Parts; . Rietschle 513258 DISC,FILTER,GAS BALLAST for VC 100,VC 150. Price: 13.30. .

WELCH DUOSEAL 1399B-10 OWNER'S MANUAL Pdf Download.

Leaky vacuum systems, too large a vacuum chamber for pump size or high gas loads to the vacuum systems are causes for extended runs of the pump at elevated pressure. If you need additional information, please contact Welch Vacuum at 847-676-8800, extension 1, for further information and precautions. 2.22 Principle of Gas Ballast 2.221.

Kurt J. Lesker Company | Welch® Standard and Chemstar .

Welch: Belt-Drive Standard Vane Pumps The low pump speed and belt drive combine to reduce operating wear and temperature, thereby reducing maintenance and oil vapor backstreaming. Use these pumps for all general purpose roughing and backing applications that demand longevity.

WELCH Vacuum Pump - 6D733|1397B-46 - Grainger

Looking for WELCH Vacuum Pump (6D733)? Grainger's got your back. Price 6048.00. Easy online ordering for the ones who get it done along with 24/7 customer service, free technical support & more.

Busch 0250 Rotary Vane Vacuum Pump | Busch Pumps | Rotary .

Busch 0250 is an oil sealed rotary vane pumps with a free air displacement of 180 cfm and a nominal pumping speed of 170 acfm.. The 0250 vacuum pump is an oil-sealed single stage, air cooled, and direct driven rotary vane mechanical vacuum pump with a 10hp motor .It is reliable and operates at 74 dB(A) noise level. Rebuilt or Remanufactured Busch 0250 Vacuum Pumps:

S Pumps for Corrosive Gases - Welch® Vacuum

D 1 61-8108D Exhaust Ring H8995G-15 Gold Vacuum Pump Oil -1 Ga. E 1 41-1518 Small Rotor H331060-5 5' x 13/16" I.D. Vacuum Hose F 1 61-8250C Center Plate 1 61-8803 Belt Guard/Cover G 1 41-1682 Large Rotor 1 61-8698 Pump Base H 1 41-1688 Large Ring 1 1371A-01 Belt Guard & Base Kit I 1 41-2074 Pump Pulley with Set Screw 20 1 41-1736 Gas Ballast Valve

Welch BTpro100 Diaphragm Pump

Welch BTpro100 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 .