by INTRODUCTION TO VALVES
A valve is a device installed in a piping system which controls the
flow of a gas or liquid. Valves have an opening through which gas
or fluid can flow. They can close off (isolate) the piping system
to stop the flow and they can control the amount of flow.
Processing systems handle different products at different pressures
and temperatures. So, there are many different types of valves
A valves shape and material depends upon the product and its
operating pressure and temperature. Valves carry the same rating
system for pressure as flanges; i.e. 150-300-600 etc.
In a gas plant or refinery, valves will be made from the following
materials:
These are used for process fluids
Stainless steel.
Carbon steel.
Cast iron.
These are used for utilities / fire water
Brass.
Bronze
These are used for air / chemical lines.
Plastic
A valve is a device installed in a piping system which controls the
flow of a gas or liquid. Valves have an opening through which gas
or fluid can flow. They can close off (isolate) the piping system
to stop the flow and they can control the amount of flow.
Processing systems handle different products at different pressures
and temperatures. So, there are many different types of valves
A valves shape and material depends upon the product and its
operating pressure and temperature. Valves carry the same rating
system for pressure as flanges; i.e. 150-300-600 etc.
In a gas plant or refinery, valves will be made from the following
materials:
These are used for process fluids
Stainless steel.
Carbon steel.
Cast iron.
These are used for utilities / fire water
Brass.
Bronze
These are used for air / chemical lines.
Plastic
