Automated Needle Valve: The same as a manual needle valve (see above), except the valve mechanism is moved by an electric, pneumatic, or hydraulic motor which is controlled by a remote switch or remotely generated electronic signal.
Utilities, Nitrogen Systems: An in-house generation, storage and distribution system found in laboratories and industrial facilities, ensuring the availability and delivery of nitrogen upon demand, to specified locations and activities
Chemicals. Also called chemical substances, are defined as any material with a definite chemical composition, or a substance produced by or used in a chemical process. According to this definition a chemical substance can either be a pure chemical element or a pure chemical compound.