For continuous-running air compressors, unloader lets unit idle load-free until air supply drops to cut-in pressure; automatically lets unit idle again after high pressure limit is reached. (Tubing and fittings not included on bare compressor).

2. Valve assembly

All units use large disc-type valves made from Swedish steel for high efficiency and long wear.

3. Suction strainer

Permanent type strainer effectively filters air and muffles noise of air intake. Easily removed for periodic cleaning.

4. Cool cylinder heads

Deep directional fins provide quick cooling; compact streamlined air passages in the cylinder head permit fast, efficient flow of cooler intake air and rapid removal of discharge air.

5. Long-life cylinders

Precision-machined cylinder walls are honed glass-smooth to reduce friction and wear to a minimum. Extra-deep fins provide increased cooling and greater strength.

6. Rings

Long life industrial design compression and oil control rings are used to assure maximum performance.

7. Connecting rods

All units contain precision bored, industrial quality designed connecting rods. . . a splash lubrication is used.

8. Balanced Crankshafts

Made from a high-tensile forged alloy steel, precisely ground and dynamically balanced to insure long life and smooth operation. Journals are ground precisely to extend bearing life.

9. Crankcase

The extra large crankcase with big oil reservoir assures cooler running and better lubrication.

10. Balanced fan-type flywheel

Airfoil-type spokes provide a continuous powerful blast of cooling air for all portions of the compressors; balancing assures smooth vibration-less operation.

11. Main bearings

To ensure long life and easy maintenance, high quality ball bearings or tapered roller bearings are used in the Fu Sheng compressors.

12. Easy oil check

The oil level check is in a convenient location for "tell at a glance" reading of oil level in crankcase.