DESIGN DESCRIPTION:  Design: ANSI B 2.1 OR BS 21;  Manufacture: ANSI B 2.1 OR BS 21;  End To End: ANSI B16.10  Thread: NPT,BSP&BSPT,DIN;  Clamping Bonnet;  Metal Seal;  Material and Working Temp.:  Cast Iron and Ductile Iron: 0℃-80℃(32°F -176°F)  Brass/bronze Seal: 80℃(176°F) Maximum  Stainless Steel Seal: 80℃(176°F) Maximum PARTS AND MATERIAL: NO. PARTS NAME MATERIALS QT-A QT-B 1 U BOLT STEEL A307-B STEEL A307-B 2 BODY 1/4”~1” ANSI A536 ANSI A536 1-1/4”~4” ANSI A126-B ANSI A126-B 3 DISC 1/4”~1” ANSI A536 ANSI A536 1-1/4”~4” ANSI A126-B ANSI A126-B 4 STEM BRASS B16 SS 410 5 GASKET GTAPHITE GRAPHITE 6 BONNET 1/4”~1” ANSI A536 ANSI A536 1-1/4”~4” ANSI A126-B ANSI A126-B 7 NUT STEEL A307-B STEEL A307-B 8 STEM PACKING GTAPHITE GTAPHITE 9 GLAND BRASS B16 SS 410 10 SCREW ANSI A126-B ANSI A126-B 11 HANDWHEEL ANSI A126-B ANSI A126-B 12 NAME PLATE ALIUMINIUM ALIUMINIUM 13 WASHER STEEL A307-B STEEL A307-B OTHER MATERIALS ARE AVAILABLE UPON REQUEST.