BSV2 Series Bellows-Sealed Valves are constructed with stainless steel valve bodies, with working pressure up to 2500 psig (172 bar) and an operating temperature range from -20°F to 842°F(-28°C to 450°C ). This series adopts hydraulically formed bellows, which ensure excellent sealing performance and long service life. Upper packing installed above the bellows provides a secondary sealing system for enhanced sealing reliability and extended service life.