1 pc reduce bore ball valve. District heating Const. carbon steel DIN ST-37. Extended butt weld ends.Ball: SS 304. stem: ss 303. Seats: PTFE + graphite.O’rings stem: viton. PN 25/40. Temp. -30ºC +200ºC.Manually operated by handle, until 6”. Gear operator >6”.Reference: 2035 Valve Technical Sheet Installation Manual Consult product