VE3007 KJ2005X1-BA1 12P4375X012

VE3007 KJ2005X1-BA1 12P4375X012 Shafts have an extensive area known as “land” to cover and find fluid passage in the ports of the valve body.

The exact match between the outside diameter of the land and the inside diameter of the valve body bore is the only factor limiting leakage through this shaft valve in a closed condition.

Dirty hydraulic fluid will wear out during this exact fit time until the valve is no longer able to seal fluid in its “closed” position. Extreme cycling of temperature can also affect the exact fit between the valve ring and the valve body.

Pneumatic fluid power systems also require cleanliness, as any particulate contamination in the air can also cause undue wear. Compressors, motors, valves and cylinders.

Unlike hydraulic fluids, compressed air is not a natural lubricant, which means that many pneumatic power units benefit from small amounts of oil vapor in the air.

Pneumatic “oilers” designed to introduce lubricating oil into the flowing air stream are usually located near the point of use (e.g. (motor or cylinder) to ensure that the oil does not condense and “settle” in the air line.

In general, fluid power systems tend to be inefficient and require more energy to be fed into the fluid than can be extracted at the point of use.

When large amounts of energy need to be transmitted over long distances, electricity is a more practical medium. However, fluid power systems have certain advantages over electric power systems, some of which are listed here.

Fluid-powered motors and cylinders are not overloaded at low speeds or in lockout situations.
There is little danger of accidental ignition of flammable atmospheres with fluid power systems. No sparks are generated)
Fluid power systems present little or no fire hazard
Fluid power systems present no risk of electric shock or arc flash
Fluid power systems are generally easier to understand and troubleshoot than electric power systems
Fluid power systems can be safely used in underwater environments
Pneumatic systems are relatively easy to equip with back-up energy reserves (e.g., liquefied nitrogen as a back-up gas supply in the event of compressor shutdown)
Pneumatic systems are self-cleaning (i.e., naturally removing dust and vapors from the air through leakage air.