This unit process represents the production/service of 1kg of high temperature and high pressure valves ,in Japan created from statistical information and other sources.
The system boundary of this process is "(nonferrous metal foundry copper alloy casting and nodular graphite cast iron etc.) -> processing/assembly -> packing."
Hydraulic valves are classified as <267714>.Bulbs for automobiles are classified as <301329>.Bulbs for bicycles are classified as <309116>.Bulbs for aircrafts are classified as <304919>.