Standard features

n Bodyhollow-forged in a closed die

n Double-sidedhigh-pressure shut-off system

- Function of acheck valve

- Function of a gate valve

n Internalhinge pin, pivoted in a separate retaining ring

n Movableshut-off system guided in a groove

n Defined stop of thecheck disc

n Pressure sealingbonnet acc. to VGB-guidelines

n Generallystellited seats

Pressure and temperatureratings

n Pressurerating up to 680 bar

n Temperature rating upto 650 °C

Materials

n 1.0460 n 1.5415 n 1.7335 n 1.7383

n 1.6368 n 1.4903 n 1.4901

1. persta-640-st-pd-25-40-high-pressure-stop-check-valves-dra-26-517630.pdf