Stainless Steel Screwed End Ball Valve - 3 Piece Investment casting Blow-out proof stem Locking device ISO 5211 Mounting pad TA-Luft approved (option) Length conform to DIN 3202/4-M3-2013SM3 (option) Thread type: ASME B1.20.1 (NPT) DIN2999 and BS21 ISO7/1 and EN10226