butterfly valve with hand lever series BULG-L-A3C-DVGW, BULC-L-A3C-DVGW; ATEX II 2 G/D Ex h X; lug type; DVGW-gas-approved; length according to EN558−1R20; body ductile iron EN-GJS-400-15 epoxy coated; disc AISI 316; shaft AISI 430; liner NBR; medium temperature -10...+60°C; DN 50mm; length 43mm; pressure range 0...16bar; nominal flange pressure PN10/16; incl. inspection certificate EN-10204-3.1; for material, pressure and tightness