Spanish to English Bus/Financial Mechanics / Mech Engineering contract

Its of an order of supplies to a valve technology company ( I understand for perhaps a solar thermal plant). I had initially asked about the "valvulas de control de atemperación" here and was told mderator control valves, however...now seeing pegging or pegging steam, I have done some research and come up with this

Could these be dearator (DA) Pegging Valves? (please see also my list for the order to the company below)

http://www.documentation.emersonprocess.com/groups/publicrea...

Valvulas de control de atemperaciôn.
xxxx.
(Cuarto Bypass).
Valvulas de control de atemperaciôn.
xxxx( Control Atemperaci6n Vapor Pegging).
Valvulas de control de atemperaciôn.
xxx( Vapor de Pegging).
Dumptube.