Designed to automatically prevent the backflow of the working medium on pipelines.
DN 15/20/25, PN 1,6-25,0 MPa
Leakproofness: GOST 11823-91.
Body steel: 20, 09Г2С, 15ХМ, 08Х18Н10Т 12Х18Н10Т, 10Х17Н13М3Т.
Working medium: liquid and gaseous media, including explosive and flammable, non-aggressive to the materials of valve parts.
Сlimatic conditions: N, F (GOST 15150).
Pipeline connection: flange (GOST 12815, GOST 12821), threaded coupling, welded coupling, butt welding.
DN 50-400, PN 1,6-25,0 MPa
Body steel: 25Л, ХМ25Л, 12Х18Н9ТЛ, 12Х18Н12МЗТЛ.
Working medium: liquid and gaseous media, including explosive and flammable, non-aggressive to the materials of valve parts.
Сlimatic conditions: N, F (GOST 15150).
Pipeline connection: flange (GOST 12815, GOST 12821).
DN 50-300, PN 1,6-25,0 MPa
Working medium: liquid and gaseous media, including petroleum products, non-aggressive to the materials of valve parts.
Сlimatic conditions: N, F (GOST 15150).
Pipeline connection: counter flanges, butt welding
