When.com Web Search

Search results

1. Results From The WOW.Com Content Network

2. Gas blending for scuba diving - Wikipedia

   en.wikipedia.org/wiki/Gas_blending_for_scuba_diving

   At this pressure and normal temperatures, air departs from linearity by about 5%, e.g. a 10-litre cylinder filled to 230 bar with air only contains about 95% of the expected 2300 litres of free air. Above this pressure, the composition of the final mix is difficult to predict using simple equations but needs the more complex Van der Waals ...

3. Cascade filling system - Wikipedia

   en.wikipedia.org/wiki/Cascade_filling_system

   A cascade filling system is a high-pressure gas cylinder storage system that is used for the refilling of smaller compressed gas cylinders. [ 1 ] [ 2 ] In some applications, each of the large cylinders is filled by a compressor , otherwise they may be filled remotely and replaced when the pressure is too low for effective transfer.

4. Self-contained breathing apparatus - Wikipedia

   en.wikipedia.org/wiki/Self-contained_breathing...

   Paul Hashagan also notes that, in 1863, A. Lacour developed and patented the "improved breathing apparatus". This system provided air to the wearer from two canvas and rubber balloon-like bags which were carried on the wearer's back. A pair of bellows would then allow the wearer to pump air to a mouthpiece.

5. Diving air compressor - Wikipedia

   en.wikipedia.org/wiki/Diving_air_compressor

   A diving air compressor is a breathing air compressor that can provide breathing air directly to a surface-supplied diver, or fill diving cylinders with high-pressure air pure enough to be used as a hyperbaric breathing gas. A low pressure diving air compressor usually has a delivery pressure of up to 30 bar, which is regulated to suit the ...

6. Light and air unit - Wikipedia

   en.wikipedia.org/wiki/Light_and_air_unit

   The depleted air cylinders within the breathing apparatus must be replaced and refilled throughout the incident. [2] The air and light unit can refill the cylinders while in the field using an onboard air compressor and cascade system. [1] It also carries a supply of spare air cylinders.

7. AOL Mail

   mail.aol.com/?icid=aol.com-nav

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!