No Water Pollution - Water is completely isolated from process vapors.

Sealants - A wide selection of sealing fluids are available, plus flow rates can be adjusted to provide constant flush - especially useful for corrosive applications.

Once-Through-Sealing - Fresh, clean, sealant fluid continuously washes internal surfaces preventing contaminate buildup.

Gas Ballast - Composition of process vapors can be altered in the pump for more control of vapor discharge characteristics.

Sleevable Cylinders - For easy replacement, if needed.

Sealed Bearings - Greased bearings are isolated to prevent contact with process vapors.

Temperature Control - With water cooling, operating temperature can be varied to give better process control. Pumps are available with radiator or direct water cooling.

Save Energy - Busch pumps use much less energy than steam jets and liquid ring pumps.