Operating Pressures

Operating pressures in hydraulic presses have been slowly moving upward. The most popular level for water hydraulic installations is a rated pressure of 5000 lb/in2 (34,500 kPa) and an actual operating pressure of 4500 lb/in2 (31,000 kPa). Intensifiers are used to raise this pressure to between 6750 and 7500 lb/in2 (46,500 and 51,700 kPa) in large presses, which corresponds to a rated power of from 7000 tons (62,300 N) upward. When used, the intensifiers are installed between the accumulators (and pump) on the low side and the press on the high side. A bypass is always provided. For very large presses, pressures of up to 15,000 lb/in2 (10,300 kPa) have been suggested. In the former Soviet Union, designers are using 15,000 lb/in2 (10,300 kPa) regularly.

In oil hydraulic installations, 3000 lb/in2 (20,700 kPa) is the most popular pressure because of the availability of 3000-lb/in2 (20,700-kPa) equipment from many reputable firms (pumps, valves, fittings, and so on). However, there are now on the market excellent units for pressures up to 6600 lb/ in2 (45,500 kPa), and the tendency in new installations is to provide 5000 lb/in2 (34,500 kPa). Today, oil pumps for pressures as high as 9000 to 15,000 lb/in2 (62,000 to 103,500 kPa) are being offered.

In the field of what is called ultrahigh-pressure equipment, pumps with direct action up to 225,000 lb/in2 (1.55 MPa) are available today.

Renewable Energy Eco Friendly

Renewable Energy Eco Friendly

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable.

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