a system that provides voice and telefax communication via satellites.

a system that provides voice and telefax communication via satellites.

A physical object intended to mechanically remove a deposit from a surface.

A physical object intended to mechanically remove a deposit from a surface.

is a conveyer intended to move dry, solid material from one location to another by means of a helix or screw rotating in a cylindrical conduit.

is a conveyer intended to move dry, solid material from one location to another by means of a helix or screw rotating in a cylindrical conduit.

A distillation column intended to clean gas by washing the gas flow with water or with another liquid entering at the top of the vessel and sprayed in the gas. Typically to remove dust and small particles.

A distillation column intended to clean gas by washing the gas flow with water or with another liquid entering at the top of the vessel and sprayed in the gas. Typically to remove dust and small particles.

A physical object intended to reduce or prevent the passage of fluid through an opening.

A physical object intended to reduce or prevent the passage of fluid through an opening.

Equipment used for room separation.

Equipment used for room separation.

A feature which is each of several parts into which a thing is or can be divided or marked off.

A manual control switch which has more then two possible positioning states.

A manual control switch which has more then two possible positioning states.

A valve that includes a means of operation (e.g. spring / gravity / fluid pressure / counter balance), and is not depending on an external source of energy.

A valve that includes a means of operation (e.g. spring / gravity / fluid pressure / counter balance), and is not depending on an external source of energy.

A 'device' intended to separate different types of substances.

A 'device' intended to separate different types of substances.

A tank gauge that is intended to intermittently lower a displacer to measure a liquid level, bottom level, interface level or density.

A tank gauge that is intended to intermittently lower a displacer to measure a liquid level, bottom level, interface level or density.

A vibrating screen for sifting out rock cuttings from drilling mud.

A vibrating screen for sifting out rock cuttings from drilling mud.

A shear valve is a ram-type BOP, similar in operation to a gate valve, but uses a pair of opposing steel plungers, rams. The rams extend toward the center of the wellbore to restrict flow or retract open in order to permit flow.

A shear valve is a ram-type BOP, similar in operation to a gate valve, but uses a pair of opposing steel plungers, rams. The rams extend toward the center of the wellbore to restrict flow or retract open in order to permit flow.