● Overview
ZJHS angular fine small pneumatic diaphragm single seat control valve driven by the top structure , equipped with multiple spring actuator , with a compact , light weight, sensitive , fluid channel S streamlined , the pressure drop , valve capacity , flow characteristics of precision , and easy disassembly . Widely used for precise control of gases, liquids and other media process parameters such as pressure, flow , temperature, level maintained at a given value . Particularly suitable for allowing a small amount of leakage, the pressure difference across the valve is not high viscosity , containing suspended solids and particulate matter fluid regulator , to avoid coking , clogging , easy purification and cleaning applications.
This series of products are standard, off -type regulating a variety of species , bellows sealed , jacket insulation type. Product Nominal there PN16, 40,64; body diameter range of DN20 ~ 200. For fluid temperature from the range of -200 ℃ ~ +500 ℃ variety of grades . Leakage standard grade Ⅳ or Ⅵ level , flow characteristics such as linear or equal percentage . Choose from a variety of different specifications .
● Main parts and materials
Body, bonnet : HT200, ZG230 ~ 450, ZG1Cr18Ni9Ti
Valve, valve seat : 1Cr18Ni9Ti, Secretary Levin titanium alloy welding
Soft seal spool : PTFE
Packing : PTFE, flexible graphite, stainless steel bellows
Gasket: Rubber asbestos , 1Cr18Ni9Ti, graphite spiral wound gasket
Membrane cover : A3
Corrugated diaphragm : NBR clip reinforced polyester fabric
Spring : 60Si2Mn
Stem , putter : 2Cr13, 1Cr18Ni9Ti
Bushing : 2Cr13
