● Overview
ZSSV V- piston pneumatic regulating valve ( regulating valve for short ), is a rotary ball valve , pneumatic unit portfolio instruments of execution units, usually associated with electrical or pneumatic valve positioner valve positioner combination. Spool has opened a V -notch , and the seat relative rotation shear force to prevent jamming . And especially for fiber-containing slurry medium, and fine adjustment of the medium containing suspended solids . Which is widely used in gas oil, chemical, pharmaceutical, metallurgy , textile, paper , sewage treatment and other production departments, vapor , liquid pipeline flow regulation in the media , in order to achieve the production process by the control requirements.
This series has a nominal pressure rating PN16, 64, nominal diameter range from 25mm to 300mm, allowing leakage of grade level or grade Ⅳ Ⅵ .
● Main parts and materials
Body, bonnet : HT200, ZG230 ~ 450, ZG1Cr18Ni9Ti, ZG0Cr18Ni12Mo2Ti
Stem : 0Cr17Ni12Mo2, 0Cr17Ni14Cu4Nb
Valve plate : ZG1Cr18Ni9, ZG0Cr18Ni12Mo2Ti
Stem ( board ) Bearings : 0Cr17Ni12Mo2
Spool: PTFE , Secretary Levin titanium alloy welding
Seat ( sealing ring ) : PTFE ( Enhanced ), 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti
Pressure ring : 0Cr17Ni12Mo2
Packing : PTFE , graphite
Seat bracket : 0Cr17Ni12Mo2
Pad ring : Viton O -rings
