Valves, other than parts of machines, made wholly or principally of plastics and linings therefor sold as a unit; diaphragms for valves, other than parts of machines, made wholly or principally of plastics and linings therefor sold as a unit; plastic connectors for attaching probes, valves and instrumentation to process lines and vessels; plastic manifolds for mounting plastic valves

Valves, other than parts of machines, made wholly or principally of metal and linings therefor; metal connectors for attaching probes, valves and instrumentation to process lines and vessels, not being parts of machines; metal manifolds for pipelines; structural parts and fittings for the aforesaid goods