Steel gate, glob and check valves for sizes DN 100 and smaller, for the petroleum and natural gas industries (ISO 15761:2002); German version EN ISO 15761:2002 (German and English text)— 84 стр.
Safety devices for gas pressure regulating stations and installations - Gas safety shut-off devices for inlet pressures up to 100 bar; German version EN 14382:2005+A1:2009+AC:2009— 91 стр.