brass ball valve code: BT1003 Size: 1/2"-2"" material: brass body , brass ball , brass stem , steel handle . brass ball valve code: BT1003Size: 1/2"-2"material: brass body , brass ball , brass stem , ... : water &non-causticity liquid ,&saturated steam. FEATURES: BOTE- Ball valve are bottom loaded stem designed , this anti-blow-out stem ... , solid and reliable for life-time use . BT1003 brass ball valve