... DN15-DN200 3,PN:PN1.6-4.0MPa 4,Type:control valve Remote control pneumatic valveMainly technical inspection1,Material: lining ceramic/ body ... design for adjusting type,it wsed in signal action and double action ,the signal input/ortput:4-20ma.Installation(see folllwing ... packing,PTFE yarn packing,PTFE-impregnated asbestos yarn,asbestos yarn with graphite,graphite packing Remote control pneumatic valve