... "-4" certificate: ISO9001 , CE material: brass body , brass ball, brass stem , Brass globe valvecode: BT1001size:1/4"-4"max pressure: 25 ... causticity liquid ,&saturated steam. material: brass body , brass ball, brass stem , steel handle .BOTE BALL VALVE are bottom lkoaded ... stem designed , this anti blow out stem also prevent tampering with the internals of the ...