What it is used for
Process valves and piping
Gate valves isolate, globe valves throttle, check valves stop reverse flow, and ball valves isolate with a quarter turn. The photograph is insulated process pipe with handwheel valves. It shows the kind of installation. The class and the alloy are whatever the line list says, often API 600, API 6D or ASME B16.34 when those are specified.
- Gate, globe, check, ball, or the buyer's code.
- And the end connection.
- Body, and what the closure is made of.

