Product Description:
ZXG series pneumatic membrane cage single-seat valve is a one-pressure ZXG series pneumatic membrane cage single-seat control valve is a medium pressure balance control valve, which adopts cage sleeve guide, single-seat sealing structure, with multi-spring actuator, runner is S-shaped, and imported MA43 series balanced sealing ring is selected. The whole has the characteristics of stable work, large allowable pressure difference, accurate flow characteristics, and low noise. It is especially suitable for working occasions where small leakage is allowed and the pressure difference between the front and rear of the valve is large.
This series of products has a variety of types, such as standard type, heat dissipation type, low temperature type, adjustable cutting type, bellows seal type, etc. The nominal pressure level of the product is PN (Mpa) 1.6, 4.0, 6.4, 10.0, the valve body diameter range DN (mm) 20 ~ 200, and the applicable fluid temperature is -150 ~ +250oC range of various grades; The leakage standards include Class IV, Class V, and Class VI; The flow characteristics are straight lines and equal percentages. A variety of fret sizes are available.
Part material
Common materials for main parts
Valve body, valve cover: ZG230~450, ZG1Cr18Ni9Ti
Valve spool and seat: 1Cr18Ni9Ti, 1Cr18Ni9Ti+PTFE, 1Cr18Ni9Ti+Siti alloy overlay
Balanced seal ring: 1.4310 + D31
Fillers: PTFE, flexible graphite
Bellows: 1Cr18Ni9Ti
Gaskets: Graphite wound gasket (V6590), F4
Membrane cover: A3
Corrugated diaphragm: clip reinforced nylon fabric nitrile rubber
Spring: 60Si2Mn
Stem, actuator: 1Cr18Ni9Ti, 2Cr13