Carbon Steel Butterfly Valve

steel butterfly
Imelda R. Marcos (born Imelda Remedios Visitacion Romualdez on July 2, 1929) is a Filipino politician and wife of 10th Philippine President Ferdinand Marcos. Upon the ascension of her husband to political power, she held various positions to the government until 1986.

carbon
A rod of carbon in an arc lamp
a copy made with carbon paper
A piece of carbon paper or a carbon copy
The chemical element of atomic number 6, a nonmetal that has two main forms (diamond and graphite) and that also occurs in impure form in charcoal, soot, and coal
carbon paper: a thin paper coated on one side with a dark waxy substance (often containing carbon); used to transfer characters from the original to an under sheet of paper
an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds

valve
device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone
control consisting of a mechanical device for controlling the flow of a fluid
A membranous fold in a hollow organ or tubular structure, such as a blood vessel or the digestive tract, that maintains the flow of the contents in one direction by closing in response to any pressure from reverse flow
a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it
A device for controlling the passage of fluid through a pipe or duct, esp. an automatic device allowing movement in one direction only
A cylindrical mechanism in a brass instrument that, when depressed or turned, admits air into different sections of tubing and so extends the range of available notes