Description All high Welch vacuum pumps rebuilt and sold through AVAC have been completely disassembled, cleaned, re-machined and carefully inspected for wear by our factory trained technicians. Units are assembled with new vanes, shaft seals, exhaust valves, gaskets, springs, oil distribution valves and bearings prior to undergoing an extended performance test to meet or exceed OEM specifications. All pumps are then painted, detailed, and pass a final quality assurance inspection prior to shipping. A final test certificate is provided with each pump, which will be covered with a one-year warranty. Welch Vacuum Pumps Gardner Denver Welch Vacuum Technology, Inc, formerly Welch Rietschle Thomas, is a wholly-owned subsidiary of Gardner Denver, a leading global manufacturer of compressors, vacuum pumps, and related products. Within Gardner Denver, Welch is an SBU of the Thomas Products Division. Starting in 1880, Welch has provided quality vacuum pumps for laboratory, industrial and educational applications. It has now been over a century and today, Welch is a leading manufacturer of vacuum pump products for chemical and biological laboratories, high vacuum manufacturing, and air conditioning/refrigeration. With headquarters in Niles, Illinois, the Welch product line includes oil lubricated rotary vane vacuum pumps; dry piston and diaphragm vacuum pumps; and specialized vacuum systems, components, and applications. One thing that hasn't changed over the past 100 years is the Welch reputation for building pumps of exceptional performance and durability. Since the early 20th century, Welch Vacuum has been pivotal in laboratory innovation. Their designs in Welch vacuum pump emphasized reliability under continuous operation, especially for chemical and medical research. These pumps handled corrosive vapors with minimal maintenance. A-VAC notes that Welch vacuum continues to set benchmarks, demonstrating how early engineering choices still influence modern vacuum systems across diverse applications.Welch 1402 Vacuum Pump 5.6 cfm REBUILT w/ 1 Year Warranty Specifications Welch Model1402Free Air DisplacementCFM5.6L/min160Ult. Pressure, Torr(mbar)1. Ult. Pressure, microns Hg1 x 10–4(0.00013) 0.1Gas BallastYesPump RPM525Motor Horsepower (watts)1/2(370)Oil Capacity, qt. (liters)2.25(2.1)Tubing Needed, I.D. in13/16(21)Intake, Nipple Thread1-20Exhaust, Thread Type1-20Weight, lbs (kg) 112(51)Overall DimensionsL in. (cm)20(51)W in. (cm)12(30.5)H in. (cm)15(38.1)Ship Weight, lbs. (kg)132(60)Shipping Carton Dimensions22.5 x 15.5 x 19.5L x W x H in. (cm)(57.2 x 39.4 x 49.5)
