Welch Chemstar 1402N Chemical-Resistant Vacuum Pump

Condition: Excellent / Like New — Previously Owned.

The Welch Chemstar 1402N is a chemical-resistant, belt-driven, two-stage rotary-vane vacuum pump designed to handle corrosive gases and harsh chemical vapors in laboratory environments.

Key Specifications

• Free Air Displacement: 5.6 CFM (160 L/min) at 60Hz
• Ultimate Pressure: 1 × 10⁻⁴ Torr
• Rotational Speed: 525 RPM (low speed to reduce wear and temperature)
• Oil Capacity: 2.25 quarts (2.1 L)
• Motor: 1/2 HP, 115V / 60Hz
• Weight: ~112 lbs (51 kg)

Design Features

• Corrosion Resistance: PTFE surfaces, fluorocarbon gaskets/seals, and stainless steel or nickel-plated wetted parts
• Large Oil Reservoir: Dilutes ingested chemical contaminants, extending fluid life between changes
• Nitrogen Purge: Standard purge system degasses and cools pump oil, reducing chemical activity and extending service intervals

Applications

• Solvent and ethanol extraction processes
• Short path and rotary evaporator distillation
• Corrosive vapor and chemical fume handling
• General laboratory rough vacuum

Payment & Pickup

Full payment required at time of purchase. Payment can be made online or in person at our Eureka, MT facility. Items can be picked up on-site or shipped by freight — forklift available to assist with loading. Buyer is responsible for shipping costs. Happy to provide freight weight and dimensions upon request.